The average molecular weight of bovine cytochrome c = 13800 Da
Explanation:
bovine cytochrome c contains 2 methionine residues
so the 1 mole of bovine cytochrome c will contain 2 moles of methionine residues.
molar mass methionine residue = 149 g/mol
if both residues are present at the terminal, then
'C' terminal eliminates the 'H' group and the 'N' terminal eliminate the 'OH' group
its mass = (2*149) - 1 - 17 = 280 g
mass of methionine residues in 1 mole of bovine cytochrome c = 280 g
mass % of methionine residues in bovine cytochrome c = 2%
mass % = (mass of individual component / total mass of the compound ) *100
mass % of methionine residues = (mass of individual methionine residues/mass of bovine cytochrome c ) *100
mass of individual methionine residues = 280 g
mass % of methionine residues in bovine cytochrome c = 2%
2 = (mass of individual methionine residues/mass of bovine cytochrome c ) *100
(2/100) = (280 / mass of bovine cytochrome c)
0.02 = (280 / mass of bovine cytochrome c)
mass of bovine cytochrome c = 280 / 0.02 = 14000 g
mass of bovine cytochrome c = 14000 g
since this calculation is done for 1 mole of bovine cytochrome c
so the mass of 1-mole bovine cytochrome c = 14000 g
mass of 1-mole bovine cytochrome c = molecular weight of bovine cytochrome c
The molecular weight of bovine cytochrome c = 14900 g/mol
1 g/mol = 1 Da
the molecular weight of bovine cytochrome c when both residues are terminal = 14900 Da
when both residues are not present at the terminal, then
non-terminal eliminate H2O group
mass of residues = 2*(149 -18 ) = 262 g
mass % of methionine residues = (mass of individual methionine residues/mass of bovine cytochrome c ) *100
2 = ( 262 / mass of bovine cytochrome c ) *100
0.02 = 262 / mass of bovine cytochrome c
mass of bovine cytochrome c = 262 / 0.02 = 13100 g/mol
the molecular weight of bovine cytochrome c = 13100 Da
when one residue is N terminal and one is non-terminal
N- terminal eliminate 'OH' group and non-terminal eliminate H2O group
mass of residues = (2*149) - 18 - 17 = 263 g
mass % of methionine residues = (mass of individual methionine residues/mass of bovine cytochrome c ) *100
2 = ( 263 / mass of bovine cytochrome c ) *100
0.02 = 263 / mass of bovine cytochrome c
mass of bovine cytochrome c = 263 / 0.02 = 13150 g/mol
the molecular weight of bovine cytochrome c = 13150 Da
when one residue is C terminal and one is non-terminal
C- terminal eliminates the 'H' group and non-terminal eliminates the H2O group
mass of residues = (2*149) - 18 - 1 = 279 g
mass % of methionine residues = (mass of individual methionine residues/mass of bovine cytochrome c ) *100
2 = ( 279 / mass of bovine cytochrome c ) *100
0.02 = 279 / mass of bovine cytochrome c
mass of bovine cytochrome c = 279 / 0.02 = 13950 g/mol molecular weight of bovine cytochrome c = 13950 Da
taking average all this = (14900 + 13100 + 13150 +13950) / 4 = 55100/4 = 13775 Da
The average molecular weight of bovine cytochrome c = 13775 Da
rounding off to three significant figures
The averages molecular weight of bovine cytochrome c = 13800 Da.
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What is the empirical formula for phosphorus oxide if the product had a mass of 1.145 g?
The empirical formula of the compound is PO an the molecular formula is[tex]P_{6} O_{6}[/tex].
What is the empirical formula?The empirical formula is the simplest formula of a compound. The empirical formula is the formula that shows the shows the ratio of the atoms that are contained in a compound.
In this case, we have the mass of the product as 1.145 g and the mass of the phosphorus that reacted with oxygen to form the phosphorus oxide as 0.500 g.
Mass of oxygen combined = 1.145 g - 0.500 g = 0.645 g
Number of moles of phosphorus = 0.500 g/31 g/mol = 0.016 moles
Number of moles of oxygen = 0.645 g/32 g/mol = 0.020 moles
Now we divide by the lowest ratio;
P - 0.016 moles/0.016 moles, O - 0.020 moles/0.016 moles
P - 1 O - 1
Hence, the empirical formula of the product oxide is PO.
Molecular formula is obtained from';
285 = [31 + 16]n
n = 285/[31 + 16]
n = 6
The molecular formula is [tex]P_{6} O_{6}[/tex]
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Missing parts;
A sample of phosphorus weighing 0.500 g was ignited to phosphorus oxide in a stream of pure oxygen. The product has a mass of 1.145 g. Calculate the empirical formula. Find the molecular formula if a separate experiment yielded a molecular mass of approximately 285 amu for the phosphorus oxide.
Empirical formula =
Molecular formula =
Part B
Follow these steps to complete the table:
1. Reuse the same test tubes from part A, labeled Fe²+ and Fe³+. Be sure they're clean.
2. Add 4 milliliters of iron(II) sulfate to the test tube labeled Fe²+,
3. Add 4 milliliters of iron(III) nitrate to the test tube labeled Fe³+.
4. Add 4 milliliters of potassium iodide to each test tube.
5. Add 1 milliliter of the prepared starch solution to each test-tube.
6. Record your observations, noting any evidence of a chemical reaction. If there is no evidence of a
reaction, write "no reaction."
BIUX² X₂ 10pt
Substances Mixed
iron(II) sulfate, potassium iodide, and starch
iron(III) nitrate, potassium iodide, and starch
Characters used: 191/15000
AVA
Iron Ion Present
iron(II) (Fe²+)
iron(III) (Fe³+)
V
Description of the Reaction
iron(II) sulfate, potassium iodide, and starch the solution will turn from yellow to blue.
iron(III) nitrate, potassium iodide, and starch will turn from yellow to blue.
Iron sulphate react with potassium iodide and starch the solution which is initially yellow in colour will turn to Blue this is because the fe3+ ion will iron will get reduced to fe2+. This takes place in an acidic solution. Here the iron will be reduced and the iodine will form a complex with starch.
Iron Nitrate react with potassium iodide and starch the solution which is initially yellow in colour will turn to Blue this is because the fe3+ ion will iron will get reduced to fe2+. This takes place in an acidic solution. Here the iron will be reduced and the iodine will form a complex with starch.
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The solution will change from yellow to blue in the presence of FeSO4, KI, and starch.
Starch and Fe(NO3)3 will change from yellow to blue.
Starch and KI react with FeSO4 to produce an initially yellow solution that becomes blue. this is due to the fact that in an acidic solution, the iron ion fe3+ is reduced to fe2+. Here, the iron will be reduced and the iodine will combine with the starch to produce a complex because of the reduction of the iron ion, the fe3+ ion, in the Fe(NO3)3 reaction with KI and starch, the solution's original yellow color changes to blue. This occurs in an acidic liquid. Here, the iron will be reduced and the iodine will combine with the starch to produce a complex.To know more about Starch visit : https://brainly.com/question/11444445
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An atom has atomic number 5 and mass number 11. How many neutrons does the atom have?
5
6
10
11
Answer:
6
Explanation:
mass number consists of the mass of protons and neutrons, hence we only need to subtract atomic number(also known as the proton number) from the mass number
therefore, no. of neutrons=11-5=6
Answer:
6
Explanation:
because amtomic weight is the sum of elctrons and neutrons and according to the question the mass is 11 so 5 +6 is eqal to 11
Is the density of an object always the same as its mass?
(A) Yes
(B) No
Answer:
yes
Explanation:
the density of a solid is the same no matter how big or small the sample
A geologist fills three identical funnels with three different sizes of sandstone. Then, the geologist pours 500 mL of water into each funnel and measures how long it takes for the water to stop draining out of the bottom of the funnels.
A biologist cuts an African violet leaf into six equal-sized pieces. Then, the biologist carefully places the cuttings on six different petri plates, each filled with a different substance, and monitors the growth of the cuttings over the next several weeks.
A physicist places three identical glass rods in different beakers, each filled with a different liquid. Then, the physicist measures the angle of refraction in each scenario.
Which of the following statements is true based on the above information?
A.
Geologists, biologists, and physicists are only able to gather data through laboratory experiments.
B.
Variables and conditions cannot be controlled during a laboratory experiment.
C.
Laboratory experiments are a useful form of scientific investigation in many different fields of science.
D.
Physicists do not perform laboratory experiments as often as biologists and geologists.
The statements that are true from the information contained in the question is;
Geologists, biologists, and physicists are only able to gather data through laboratory experiments.
Laboratory experiments are a useful form of scientific investigation in many different fields of science.
What is an experiment?The term experiment refers to the manner in which information could be obtained. We know that we are able to arrive at new knowledge in science by conducting carefully controlled experiments. In this experiment, there must be a dependent variable as well as an independent variable.
The independent variable is the variable that we are able to manipulate in the course of the experiment while the results that we obtain when we manipulate the independent variable affects the values of the dependent variable.
Hence, the statements that are true from the information contained in the question is;
Geologists, biologists, and physicists are only able to gather data through laboratory experiments.
Laboratory experiments are a useful form of scientific investigation in many different fields of science.
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4. Suppose you were given a length of string and an irregularly shaped piece from a jigsaw
puzzle. How would you determine the perimeter of the piece of the jigsaw puzzle?
(Perimeter is the distance around the outside edge of an object.)
The perimeter can be determined by winding the piece of string around the edges of the object and then measuring the length of the string wound around the object on a ruler.
What is the best way to determine the perimeter of the jigsaw puzzle?The perimeter of an object is the distance around the outside edge of an object.
The perimeter of objects of different regularly-shaped can be determined using the following formulas:
perimeter of a square = 2 * length of a sideperimeter of a rectangle = length * breadthperimeter of a triangle = ¹/₂ base length * heightperimeter of a circle = 2πrFor the irregularly-shaped piece from a jigsaw puzzle, the perimeter can be determined by winding the piece of string around the edges of the object and then measuring the length of the string wound around the object on a ruler.
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Please help!!! Your reading assignment lists possible errors that can occur when conducting an experiment. Which of the following would be a possible error?
a) Humans making exact measurements when conducting experiments.
b) Humidity and temperature in the room may influence equipment
c) Making sure all equipment is clean and calibrated (carefully adjusted)
Answer:
The answer is B.
Explanation:
Systematic error arises from a faulty measuring device, imperfect observation methods, or an uncontrolled environment.
Answer:
your answer is a
Explanation:
If 0.536 mol
of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate will be produced in the reaction?
mass:
0.287 g zinc sulfate will be produced in the reaction
the reaction will be
Pb (so4)2 + 2 Zn ⇄ 2znSO4 + Pb
that is 0.536 mole of zinc
that is 0.536/2
we have to find Zinc sulphate
that be 'x'
2 mole of znSO4 = 2 * molar mass of znSO4
= 2 * 0.536 g/mol. = 1.072
by putting in equation,
0.536 / 2 = x / 1.072
x = 0.287 g
Redox Reaction is a short for oxidation-reduction defined as a chemical reaction in which electrons are lost from one substance (oxidation) and added to another (reduction). oxidation and reduction always occur together. there is no net change of the number of electronsTo know more about Redox Reaction visit :
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convert 650 mi to mm
Answer:
1046073600 millimeters
Electrons can move throughout the atom.
Which terms can be used to represent where the electrons can be found?
Answer:
Energy levels, because electrons go around the center of the atom. It goes 2 and 7...
Explanation:
Answer the question about this Bohr model.
Bohr model
What does the arrow represent as an electron jumps from energy level 3 to level 1?
release of energy
release of radiation
release of alpha particles
release of electrons
(Option B). According to Bohr's model, when an electron jumps from energy level 3 to level 1 it emits radiation, so the arrow represents release of radiation.
What is energy level?Energy levels also called electron shells are fixed distances from the nucleus of an atom where electrons may be found.
What happens when electron jumps from a higher energy level to a lower energy level?
Electron can move from one energy level to another energy level. Either from higher energy level to a lower energy level or from a lower energy level to a higher energy level.
If an electron jumps from a higher to a lower energy level, energy will be lost, and the lost energy will be emitted by the atom in a bundle of electromagnetic radiation.
Thus, according to Bohr's model, when an electron jumps from energy level 3 to level 1 it emits radiation, so the arrow represents release of radiation.
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What group is element 118 in?
*
O Alkali Metals
O Chalcogens
OPnictogens
Halogens
The group which element 118 is in noble gas group
It is a part of noble gas group.The element, No. Ununoctium, a placeholder name that in Latin reads "one-one-eight," had previously been assigned to the number 118 on the Periodic Table of Elements.In November 2016, the International Union of Pure and Applied Chemistry (IUPAC) approved the name oganesson for element 118.As of 2022, the element with the highest atomic number known is oganesson (Z = 118), which completes the seventh period (row) in the periodic table. Thus, everything in the eighth period and afterwards is totally speculative.Learn more about noble gas at:
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What is the function of ribosomes?
(A) storage of nutrients
(B) protein synthesis
(C) photosynthesis
(D) cellular respiration
Answer: the answer is B
Answer: B
EX: Ribosomes are organelles and help produce proteins with many different functions in the body, they can be found within the cytoplasm or the endoplasmic reticulum. Where are ribosomes?
The continental crust is made of?
Answer:
It is made out of granite.
Explanation:
This is because of the tectonic plates.
What is the name of the person who sings or chants a solo line in the style of call and response?
A. Call Leader
B. Melody Singer
C. Solo Singer
D. Song Leader
The name of the individual who leads a solo line in a call-and-response song or chant.
The correct option is A.
What is a singing technique known as call and response?Call and response is a musical style in which one performer proposes a phrase, to which the other responds directly with a commentary or reaction. The musicians collaborate to advance the song and produce an original, group sound by building on each other's contributions and working together.
How can a call as well as a response be distinguished?In the musical form of "call and response," a melodic phrase is followed by another, usually in the form of a question as well as a response. An aural phrase is comparable to a sentence.
Which type of music is best renowned for its use of call-and-response methods?It could be vocal, instrumental, or a mix of the two. Call and response can be found in a wide range of musical styles, including rap, blues, and classical. Blues and religious music feature call and response the most frequently.
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How many tires are there in 3.5 moles of cars?
The number of tires contained by 3.5 moles of cars is 10 tires.
What is number of moles?The number of moles of a substance equals the ratio of its given mass in a chemical reaction to the mass of one mole of that substance.
The number of tires contained by 3.5 moles of cars is calculated as follows;
1 moles of a car contains 4 tires
3.5 moles of cars will contain -------?
Substitute the given parameters and solve for the number of tires contained in 3.5 moles of cars.
= 3.5 moles x 4 tires/1 mole
= 14 tires
Thus, the number of tires contained by 3.5 moles of cars is 10 tires.
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The industrial production of lime ( CaO ) from calcium carbonate is accomplished via the following reaction:
CaCO3(s)⇌CaO(s)+CO2(g)
Given the following data:
The reaction goes to completion at 1200 K.
What is the equilibrium constant?We know that the equilibrium constant is the value that shows us the extent to which a reactant may have been converted into products. A high and positive value of equilibrium constant shows that the the reaction moves forward to yield the products as given as shown.
Now;
If we look at the way that the information has been presented in the table that shows the complete question in the image attached to this answer, it is clear that the reaction goes to completion at 1200 K.
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Convert 7.6 cm³ to m³
Divide the volume value by 1e+6. The answer should be 7.6e-6. :)
Which of the following best describes the element I
The one that best describes the element is that it is a material consisting of only one type of atom. The correct option is a.
What is an element?A chemical element is a type of atom with a specific number of protons in its nucleus, including the pure substance made up entirely of that species.
Chemical elements, unlike chemical compounds, cannot be broken down into simpler substances by any chemical reaction.
An atom is the smallest amount of an element. It is made up of subatomic particles such as neutrons, protons, and electrons. A given element contains only one type of atom.
Thus, the correct option is a.
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Your question seems incomplete, the missing options are:
A) a material consisting of only one type of atom
B) a material that has consistent physical properties
C) a material with more than one type of atom
D) a material that has consistent chemical properties
A 7.96 gram sample of silver reacts with oxygen to form 8.55 gram of the metal oxide. What is the formula of the oxide?
When 7.96 g of Silver (Ag) reacts with Oxygen (O) then a metal oxide is formed, the formula of the oxide is Ag₂O (Silver Oxide). Cationic Metal react with anionic oxygen to produce metal oxides.
How to calculate the empirical formula?Metal oxides are the chemical compounds formed by the reaction of oxygen and metals.
For the given metal oxide,
Mass of silver = 7.96 g
Mass of metal oxide = 8.55 g
To find out the number of moles of Ag and O in metal oxide,
Number of moles = mass/molar mass
Moles of Ag = 7.96g/107.87 g.mole⁻¹
(molecular mass of Ag = 107.87g.mole⁻¹)
Moles of Ag = 0.074 mole
Mass of oxygen is not given in the question.
To calculate the mass of oxygen
Mass of O = mass of metal oxide - mass of Ag
mass of O = 8.55 g - 7.96 g
mass of O = 0.59 g
Moles of O = 0.59 g / 16.00 g.mole⁻¹ (molecular mass of O = 16g.mole⁻¹)
Moles of O = 0.037 mol
The mole ratio can be calculated by dividing with the element with lesser number of moles
Ag : O
0.074/0.037 : 0.037/0.037
The ratio is 2:1
So, the empirical formula of the metal oxide formed by the reaction of metal with oxygen is Ag₂O.
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An oily liquid with a cheesy, waxy odor like that of goats or other barnyard animals is caproic acid, a compound containing carbon, hydrogen, and oxygen. Combustion analysis of a 4.30-g sample of caproic acid produced 9.78 gCO2 and 4 gH2O.
Find the empirical formula for caproic acid.
The empirical formula for the caproic acid, given the combustion analysis data is C₃H₆O
We'll begin bey obtaining the mass of carbon, hydrogen and oxygen in the compound. This is illustrated below:
How to determine the mass of C
Mass of CO₂ = 9.78 gMolar mass of CO₂ = 44 g/mol Molar of C = 12 g/mol Mass of C =?Mass of C = (12 / 44) × 9.78
Mass of C = 2.67 g
How to determine the mass of H
Mass of H₂O = 20.99 gMolar mass of H₂O = 18 g/mol Molar of H = 2 × 1 = 2 g/mol Mass of H =?Mass of H = (2 / 18) × 4
Mass of H = 0.44 g
How to determine the mass of O
Mass of compound = 4.30 gMass of C = 2.67 gMass of H = 0.44 gMass of O =?Mass of O = (mass of compound) – (mass of C + mass of H)
Mass of O = 4.30 – (2.67 + 0.44)
Mass of O = 1.19 g
How to determine the empirical formulaThe empirical formula of the compound can be obtained as follow:
C = 2.67 gH = 0.44 gO = 1.19 gEmpirical formula =?Divide by their molar mass
C = 2.67 / 12 = 0.2225
H = 0.44 / 1 = 0.44
O = 1.19 / 16 = 0.074
Divide by the smallest
C = 0.2225 / 0.074 = 3
H = 0.44 / 0.0744 = 6
O = 0.074 / 0.074 = 1
Thus, the empirical formula of the compound is C₃H₆O
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What is the element name for TINA
Answer:
Titanium Sodium
Explanation:
Ti is short for titanium
and NA is short for sodium
Hope this helped and have a good day
b. CALCULATE The specific heat of foam is about 1,200 J/(kg x K). How
much heat does it take to raise the temperature of 1 kg of foam
by 2 K?
Now, you must figure out how much heat is needed to increase the temperature of 1 kg of foam by 2 K . In this case, you know that you need 1200 J to increase its temperature by 1 K , so you can say that another 1200 J will increase its temperature by 1 K again.
Please help me on this! Please
Observation vs Inference
An observation is based on factual information that can be found through the use of the 5 senses: touch, taste, smell, sight, hearing. An inference is a guess or conclusion that is made after something is observed.
1. The clouds mean it is going to rain today.
the clouds have been observed by sight and a guess has been made that it will rain as a result of this observation. Therefore it is an Inference.It's rainy and cold.
both of these are factual information based on the 5 senses. Rain can be seen by sight and you can feel whether something is hot or cold, Therefore it is an Observation.The grass is going to get very green after the rain.
The rain can be observed by sight but there is a guess that the grass will become very green. There was an observation and a inference made upon that observation. Therefore it is an Inference.I need help solving this problem
48.98 gigagram/hr are there in 8.23x10⁶ ton/wk
What is a gigagram?
In the Metric System, a gigagram is a unit of mass. Gg is the symbol for gigagram. A gigagram has gram as its base unit and giga as its prefix.
8.23x10⁶ ton/wk equals 48.98 gigagram/hr
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4. Food and shelter are resources animals need in order to ensure reproductive _____________.
Answer:
of animals will be safe
Explanation:
that's it
How does a lithium cation compare to a lithium atom?
The cation is larger.
The cation has the same radius.
The cation is smaller.
The cation has the same charge.
As compared to the lithium atom, the lithium cation is smaller.
The following describes the electronic structure of the lithium atom:
Li = 1s², 2s¹
While the lithium cation's electrical structure is described in the following,
Li⁺ = 1s²
Some of the causes behind the shorter length of the lithium cation relative to its parent atom.
Energy Levels DropElectronic configurations depict the valence shell of the Li atom as two whereas the Li cation's is shown to be one; as a result, the distance between the valence electrons and nucleus has decreased, leading to small size.
Less Effect of ShieldingThe valence electron is shielded from nucleus attraction by the core electrons in a process known as the shielding effect. Since a lithium cation lacks core electrons, the electrons are more pulled to the proton, which results in decrease in size.
More nuclear energyThe Li atom has three protons and three electrons; hence, three protons will draw three electrons, partly balancing the game. The proton side of the Li cation, on the other hand, strengthens and puts more force on the remaining electrons, moving them nearer to the nucleus and reducing their size, once one electron has left the Li cation.
So Li cation will be smaller than Li atom as the removal of one electron causes more nuclear energy, less effect of shielding and drop in energy levels.
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Answer: C
Explanation: on EDGE
Vitamin C tablets are taken as a dietary supplement. If a typical tablet contains 400.0 mg of vitamin C, what amount (in moles) of vitamin C is contained in 11 tablets?
The correct answer is 2 × 10^21 molecules.
Vitamins A, D, E, and K are different types of vitamins that belong to the fat-soluble vitamin category. Vitamin B and C are water-soluble vitamins. Pantothenic acid, vitamin B1, vitamin B2, riboflavin, vitamin B3, niacin, vitamin B6, biotin, folic acid, and vitamin B12, often known as cobalamin, are further subgroups of vitamin B. A vitamin is a living cell that the body must have in minute amounts to function properly. Essential nutrients must be given through diet because they cannot be absorbed by the body in large amounts or at all.
C6H8O6 = (6) 12.01 g + (8) 1.008 g + (6) 16.00 g = 176.12 g
500 mg C6H8O6 × 1 gram/1000 mg × 1 mole C6H8O6/176.12 grams × 6.02 × 10^23 molecules /1 mol
= 2 × 10^21 molecules
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If 32.0 grams of ammonium nitrite react to form 14.0 grams of nitrogen, how many grams of water must simultaneously be formed?
The mass of water that is formed is 20 grams of water.
What is decomposition?A decomposition reaction is one in which a substance is broken down to give its components. The decomposition would lead to the formation of the substances that were combined to obtain the decomposed substance.
From the law of conservation of mass, we know that the total mass in the system does not change. This implies that the mass of the reactants must be equal to the mass of the products.
If the mass of the ammonium nitrite is 34 grams then the mass of the water that is formed simultaneously is; 34 - 14 = 20 grams of water.
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How many moles of CsH12 (pentane) must be reacted according to the
following balanced chemical reaction to transfer -297.6 kJ of heat?
CsH12(1) + 8 O2(g) → 5 CO₂(g) + 6 H₂O(g)
AH-3508.8 kJ
11.79 mol of pentane (C₅H₁₂) reacted to transfer -297.6 kJ of heat.
Pentane is a 5-carbon atom straight-chain alkane with the formula C₅H₁₂. It serves as a refrigerant and a non-polar solvent. It is both an alkane and a volatile organic molecule.
Heat produced in reaction = -3508.8 kJ
Heat produced in balanced reaction = -297.6 kJ
Moles of C₅H₁₂ reacted = (Heat produced in reaction) / (Heat produced in balanced reaction)
Moles of C₅H₁₂ reacted = -3508.8/ -297.6
Moles of C₅H₁₂ reacted = 11.79 mol
Therefore, 11.79 mol of pentane (C₅H₁₂) reacted to transfer -297.6 kJ of heat.
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