D. only the surface material reacts, so having the entire material be made of the catalyst is not necessary.
How does surface area affect reaction of a catalyst?
Increasing the surface area of a catalyst increases the frequency of collisions and increases the reaction rate.
Several smaller particles have more surface area than one large particle. The more surface area that is available for particles to collide, the faster the reaction will occur.
Thus, it is important way of utilizing the catalyst because only the surface material reacts, so having the entire material be made of the catalyst is not necessary.
Learn more about catalyst here: https://brainly.com/question/12507566
#SPJ1
1- For endothermic reactions AH>0.
For an endothermic reaction, ΔH is positive (>0).
For an exothermic reaction, ΔH is negative (<0).
When the temperature of a system rises as a result of the evolution of heat, an exothermic process takes place. The heat of reaction is reduced as a result of the discharge of this heat into the environment.When the temperature of an isolated system drops while the surroundings of a non-isolated system warm up, this is known as an endothermic response. The heat of reaction is generally positive in endothermic reactions.Enthalpy (ΔH), the total of all potential and kinetic energies, varies as a result of energy level disparities between exothermic and endothermic reactions. In a reaction, the system itself determines ΔH, not the environment.Learn more about thermodynamics here:
brainly.com/question/13059309
#SPJ9
what effect does using plant food(Miracle Grow) have on a plant
The effect of using plant food(Miracle grow) is providing nutrients for plants, increasing longevity, and fostering plant growth.
Miracle grow contains plant nutrients and micronutrients. Plant nutrients are nitrogen, phosphorus, and potassium, while micronutrients are boron, calcium, and magnesium. These nutrients will help the plant to plant more robustly, faster, and healthier. Also, it will produce larger/more numerous flowers and fruits/vegetables will produce larger/more numerous fruit.Miracle-Gro is a chemical fertilizer that uses chemical versions of nutrients necessary for longevity and long-duration .The function of Miracle-Gro is to bolster the growth of the plants so that they are bigger and create more blooms where applicable.Miracle-Gro is a chemical fertilizer that uses chemical versions of nutrients necessary for longevity and long-duration and sustenance.To learn more about miracle grow visit:
https://brainly.com/question/22932899
#SPJ1
According to today's Lesson Module Reading, which of the following are aqueous suspensions? Milk Soil Paint Jelly beans
Answer:
i think paint
Explanation:
The first has an abundance of 15.8% with a mass of 71.68amu. The second isotope has a mass of 73.47amu. What is the average atomic mass?
The average atomic mass of the two isotopes is 7346.717 atomic mass units.
How is average atomic mass of isotopes calculated?Average atomic mass of an element is the sum of masses of it's isotopes multiplied by it's natural abundance. The percent of natural abundance of isotope is converted in to decimal form by dividing it by hundred.
It is a fraction representing natural abundance of the isotope .It is found out because there is no mass set for an element.
To calculate average atomic mass, the given data is substituted in the formula,
average atomic mass=abundance×atomic mass of isotope 1 +abundance×atomic mass of isotope 2
=(0.158×71.68)+(99.842×73.47)
=11.3254+7335.39
=7346.71 atomic mass units
Thus, the average atomic mass is 7346.71 atomic mass units.
Learn more about average atomic mass , here:
https://brainly.com/question/13292428
#SPJ1
Pls help me with my chem
Answer:
the answer is maybe 0.000777
is the forward reaction in the [CoCl4]2- ion / [Co(H2O)6]2 ion equilibrium exothermic or endothermic? Briefly explain how the student's observation supports your answer.
The forward reaction in the tetra-chloro cobalt(II) ion and hexa-aquo cobalt ion equilibrium is a exothermic process.
How is the given forward reaction inferred exothermic?The reaction is exothermic in the forward reaction because Co(H₂O)₆[tex]^+2[/tex] is more stable than CoCl₄[tex]^2-[/tex] as the bond are stronger in aquo complex of cobalt than in chlorate complex.
It is expected that if temperature is increased, reaction will occur in reverse direction to favoring endothermic reaction ,and if temperature is decreased exothermic reaction is favored.
In exothermic reaction,the color of complex is pink due to an increase in the number of water molecules while in endothermic reaction there is an increase in the concentration of chloride ions which leads to blue color solution.
Learn more about chemical equilibrium ,here:
https://brainly.com/question/4289021
#SPJ1
How many atoms of different elements are found in the formulae of the compounds of copper nitrate Cu(No3)2
Please help
What is the energy (E) of a photon whose frequency is 5.77 × 10¹ s ¹2
Answer:
3.83*10⁻²¹ [J].
Explanation:
1) formula:
E=hν, where ν=5.77*10¹²; h=6.63*10⁻³⁴;
2) according to the formula above:
E=577*10¹⁰*663*10⁻³⁶=382551*10⁻²⁶ [J]≈3.83*10⁻²¹[J].
Which of the following is the
correct way to express the
number below in standard form?
3.7 x 10-4
A. 0.000037
B. 0.00037
C. 37000
D. 370000
[tex]\implies[/tex] The correct answer is (B) 0.00037
Step-by-step explanation:[tex]\bf{ \underline{Step \: 1)} :3.7 × 10^{-4 }we \: can \: write \: as \:37 × 10^{-5}}[/tex]
[tex]\bf{ \underline{Step \: 2)} :37 × 10^{-5 } \: we \: can \: write \: as \: 37 × \frac{1}{10^5}}[/tex]
[tex]\bf{ \underline{Step \: 3)} :37 × \frac{1}{10^5}\: we \: can \: write \: as \: (37 × \frac{1}{(10)(10)(10)(10)(10)}})[/tex]
[tex]\bf{ \underline{Step \: 4)} :37 × \frac{1}{(10)(10)(10)(10)(10)} we \: can \: write \: as \: ( 37 × \frac{1}{100000}})[/tex]
[tex]\bf{ \underline{Step \: 5)} :37 × \frac{1}{100000} \: we \: can \: write \: as \: \frac{37}{100000}}[/tex]
[tex]\bf{ \underline{Step \: 6)} :\frac{37}{100000} \: we \: can \: write \: as \: 0.000037}[/tex]
A student obtains a total of 357.3. points on four tests - each test worth exactly 100. points. Determine the student’s test average with the correct significant digits.
The student’s test average points for the four test is 89.3 points
What is average score (mean)?The Mean is defined as the arithmetic average. Mathematically, it can be expressed as:
Mean = (Summation of scores) / number of scores
How to determine the student’s test average pointsThe following data were obtained from the question:
Summation of points = 357.3 pointsNumber of test = 4Average =?Average = (Summation of scores) / number of test
Average = 357.3 / 4
Average = 89.3 points
Thus, the student’s test average points for the four test is 89.3 points
Learn more about statistics:
https://brainly.com/question/8974461
#SPJ1
A music store manager counted the number of people who came into their store on Tuesday and divided them into groups of people younger than 20, 20 to 40, and older than 40. Which type of graph would be the best to use in order to display the data?
The type of graph that will be to display the data collected by the store keeper is bar graph.
What is bar graph?A bar graph can be defined as a chart or a graphical representation of data, quantities or numbers using bars or strips.
Also, a bar graph is a graph that shows complete data with rectangular bars and the heights of bars are proportional to the values that they represent.
Three bar graphs can be used to display the data collected by the store keeper.
First bar graph = people younger than 20Second bar graph = 20 to 40 yearsThird bar graph = people older than 40.Thus, the type of graph that will be to display the data collected by the store keeper is bar graph.
Learn more about bar graph here: https://brainly.com/question/24741444
#SPJ1
Mateo was the first responder at a crime scene. He ensured that the scene was safe. Other officers arrived. What should Mateo and the officers do next?
A.
They must secure the crime scene.
B.
Nothing; they need to wait for others to arrive.
C.
They should take photos from all angles.
D.
They are required to collect evidence.
Mateo and the officers should secure the crime scene.
What are the stages in crime investigation? Approach the crime scene and seal it-The extent to which crime scene is to be protected is determined. Get information regarding crime surroundings-Valuable information regarding the crime scene's surroundings is obtained.Collect physical evidences-Physical evidences on the spot of crime scene are collected.Prepare a narration mentioning the crime scene's description- A narration is prepared regarding crime scene's location and surroundings.Prepare a sketch of the crime scene-A sketch of the crime scene is prepared keeping in mind the detailed view of the surroundings.Conduct a detailed research-A detailed research is carried out by the detectives regarding the crime scene.Evaluate physical evidences-The physical evidences which are collected are evaluated to obtain information which helps in getting the criminal arrested.Conduct final survey- A final survey is carried out to make sure that no clues which are in regard to the crime are left unattended.Release crime scene- The crime scene is released by removing all the boundaries which were set to protect the crime scene.
To learn more about stages of crime investigation click here:
https://brainly.com/question/15149989
#SPJ1
An ionic compound forms when lithium (Z = 3) reacts with oxygen (Z = 8). If a sample of the compound contains 5.52 × 1023 lithium ions, how many oxide ions does it contain?
Ionic bonding continued. In the reaction between lithium and oxygen, lithium donates its valence electrons to oxygen atoms.
Li ( Z=3 ) , E.C. 2,1
Lithium will lose one electron to form unipositive ions.
O ( Z=8 ), E. C. 2, 6
Oxygen will gain 2 electrons to form a negative ion
So the formula of Lithium oxide will be Li2O
Hence the number of oxide ions will be half the number of Lithium ions or 1.07 × 10^22 / 2 Or 0.585 × 10^22 ions.
As you can see in the animation to the right, two lithium atoms react with one of her oxygen atoms. Each lithium atom donates an electron to an oxygen atom. In ionic compounds, the total number of cation charges must equal the total number of anion charges. In other words, the connection must be neutral. This is an example of a binary ionic compound consisting of two elements, a cation, and an anion. Lithium, a metal, has a positive charge, and fluoride, a non-metal, has a negative charge, so these two ions are held together by an ionic bond.
Learn more about An ionic here:-https://brainly.com/question/14309645
#SPJ9
Calculate the mass, in grams, of 932 atoms of cesium, Cs. (molar mass of Cs is 132.91 g)
The mass, in grams, of 932 atoms of cesium, Cs is 2.06×10⁻¹⁹ grams
Avogadro's hypothesis6.02×10²³ atoms = 1 mole of cesium
But
1 mole cesium = 132.91 g
Thus, we can say that:
6.02×10²³ atoms = 132.91 g of cesium
How to determine the mass of cesiumThe mass of cesium that contains 932 atoms can be obtained as illustrated below:
6.02×10²³ atoms = 132.91 g of cesium
Therefore,
932 atoms = (932 atoms × 132.91 g) / 6.02×10²³ atoms
932 atoms = 2.06×10⁻¹⁹ g of cesium
Thus, the mass of cesium that contains 932 atoms is 2.06×10⁻¹⁹ grams
Learn more about number of atom:
https://brainly.com/question/28611842
#SPJ1
Convert 2.44 x 1024 H₂O molecules into moles.
The number of moles 2.44 x 10²⁴ H₂O molecules will be having is 4.05.
Converting between molecules and moles is done by either multiplying by or dividing by Avogadro's number. To go from molecules to moles, divide the number of molecules by 6.02 x 10²³.
Avogadro's number, which is equal to 6.022 × 10²³, is the number of units in one mole of any material (defined as its molecular weight in grams). Depending on the substance and the nature of the reaction, the units could be electrons, atoms, ions, or molecules.
Thus,
No. of molecules = No. of moles × Avogadro no.
from the question we know,
No. of molecules = 2.44 × 10 ²⁴
Avogadro no. = 6.02 × 10²³
i.e. 2.44 × 10²⁴ = No. of moles × 6.02 × 10²³
No. of moles = 2.44 × 10 ²⁴
6.02 × 10²³
No. of moles = 4.05
The number of moles 2.44 x 10²⁴ H₂O molecules will be having is 4.05.
To know more about Avogadro no. visit the link:
https://brainly.com/question/11907018?referrer=searchResults
#SPJ9
A 25.00 mL sample of oxalic acid, H₂C2O4, requires 31.44 mL of 0.3164 M NaOH for titration to the
equivalence point. What is the concentration of the oxalic acid?
H₂C₂O4(aq) + 2 NaOH(aq) →→→ Na₂C₂O4(aq) + 2 H₂O(1)
-
4.973 M
0.1989 M
9.946*10^-2 M
0.3978 M
0.7957 M
Answer: 9.946*10^-2 M
Explanation: if u multply
A piece of copper alloy with a mass of 73.0 g is
heated from 26.0◦C to 50.0◦C. In the process,
it absorbs 596 J of energy as heat. What is
the specific heat of this copper alloy?
Answer in units of J/g · K.
Answer:
c≈0.3418 [J/(gr*K)].
Explanation:
1) formula of heat:
Q=cm(T-t), where Q- energy of heat, c - required specifie heat, m - mass, T and t - initial and final temperatures;
2) according to the formula above:
[tex]c=\frac{Q}{m(T-t)};\\ c=\frac{596}{73*(50-26)}=0.34018264840182648401826484018265[\frac{J}{g*K}].[/tex]
P.S. the differrence in °C is equal the difference in °K.
A solid block of substance is 78.0 cm by 55.0 cm by 35.0 cm and it weighs 569 g. What is its density in g/cm3?
The density of the solid block is 3.79 * 10⁻³ g/cm³.
What is the density of substance?The density of a substance is defined as the ratio of mass and volume of a substance.
Density = mass/volumeDensity measure how close together the particles of a given mass of a substance is. Substances with high density have greater masses compared to the volume of those substances whereas substances with low densities have greater volume compared to their masses.
The volume of the solid block = 78 * 55 * 35 = 150150 cm³
mass of solid block = 569 g
Density of the solid block = 569 g/150150 cm³
Density of the solid block = 3.79 * 10⁻³ g/cm³
Learn more about density at: https://brainly.com/question/1354972
#SPJ1
The enthalpy of vaporization for methanol is 35.2 kJ/mol. Methanol has a vapor pressure of 1 atm at 64.7 oC. Using the Clausius-Clapeyron equation, what is the vapor pressure for methanol at 34.1 oC? Give your answer in atmospheres, to the third decimal point.
The vapor pressure is obtained as 3.7 atm.
What is the Clausius-Clapeyron equation?The Clausius-Clapeyron equation is the equation that we could use to obtain the vapor pressure of a solution at any temperature. Of course we would always have two different temperatures to work with.
Hence;
ln(P1/P2) = ΔHvap/R (1/T2 - 1/T1)
P1 = initial pressure
P2 = final pressure
ΔHvap = enthalpy of vaporization
T2 = final temperature
T1 = initial temperature
ln(1/P2) = 35.2 * 10^3/8.314 (1/338 - 1/307)
ln(1/P2) = 4234(0.00295 - 0.00326)
ln(1/P2) = -1.31
1/P2 = e^-1.31
P2 = 1/e^-1.31
P2 = 3.7 atm
Learn more about Clausius-Clapeyron equation:https://brainly.com/question/13162576
#SPJ1
You know that silver has a density of 10.5 g/cm3. What mass of silver will raise the level of the
water in the graduated cylinder 1.50 mL?
The mass of the silver that will raise the water by 1.5 mL is 15.75 g
What is density?The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as
Density = mass / volume
With the above formula, we can obtain the mass of the silver. Details below
How to determine the mass of the silverDensity of silver = 10.5 g/cm³Volume of water raised = 1.5 mLVolume of silver = Volume of water raised = 1.5 mL = 1.5 cm³Mass of silver =?Density = mass / volume
Cross multiply
Mass = Density × Volume
Mass of silver = 10.5 × 1.5
Mass of silver = 15.75 g
Learn more about density:
https://brainly.com/question/952755
#SPJ1
Define scientific attributes in your own words.
In the Millikan oil drop experiment the measured charge of any single droplet was always a whole number multiple of -1.60 x 10-19 C. If a single droplet was found to have a total charge of -1.12×10-18 C then how many excess electrons are contained within the drop?
The number of excess electrons contained within the drop of Millikan oil drop experiment is determined as 7 excess electrons.
What are the excess electrons contained within the drop?
The excess electrons contained within the drop of Millikan oil drop experiment is calculated as follows;
-1.60 x 10⁻¹⁹ C = 1 electron
-1.12×10⁻¹⁸ C = ? electrons
= ( -1.12×10⁻¹⁸ C) / (-1.60 x 10⁻¹⁹ C )
= 7 excess electrons
Thus, the number of excess electrons contained within the drop of Millikan oil drop experiment is determined as 7 excess electrons.
Learn more about Millikan oil drop experiment here: https://brainly.com/question/28106069
#SPJ1
Which is the best argument for why CO2 represents a covalent bond?
A:The difference in electronegativity of the two elements is greater than 1.7.
B:The difference in electronegativity of the two elements is less than 1.7.
C:The difference in electronegativity of the two elements is greater than 1.7 but less than 3.0.
D:The difference in electronegativity of the two elements is zero.
The difference in electronegativity of the two elements is less than 1.7 represents the covalent bond.
What is the covalent bond?
If the electronegative difference is greater than 1.7, the bond's nature is ionic; if it is less than 1.7, the bond's nature is covalent.
The sharing of electrons between atoms is known as covalent bonding. This kind of bonding happens when two atoms of the same or closely related elements in the periodic table come together.
Covalent bonding is seen in between nonmetals and metals, this bonding typically happens between nonmetals. Covalent bonds are most likely to form when two atoms have comparable electronegativities, or the same affinity for electrons.
Therefore, The difference in electronegativity of the two elements is less than 1.7 represents the covalent bond.
To learn more about covalent bond, refer to the link:
https://brainly.com/question/10777799
#SPJ1
The top chemical reaction shows the reaction between sodium and chlorine to produce table sale (sodium chloride). Select ALL of the reactants shown in the chemical reaction:
The kind of chemical reaction that results in the formation of sodium chloride is a neutralization reaction.
What is a neutralization reaction?
Bases react to produce water and salt, which requires the interaction of H+ and OH- ions. A pH of 7 results from the neutralization of a potent acid and a potent base. A strong base neutralizing a weak acid will provide a pH result that is more than 7, while the neutralization of a strong acid and weak base will produce a pH result that is less than 7.
A solution is neutralized when equal amounts of acid and base combine to create salts. One mole of protons (H+) is equivalent to one mole of the base, and one mole of acid is equivalent to one mole of protons (H+) (OH-). N parts of acid will always neutralize N parts of the base because salts are created by neutralization reactions with comparable weight concentrations of acids and bases.
Therefore, the kind of chemical reaction that results in the formation of sodium chloride is a neutralization reaction.
Read more about neutralization reaction, here
https://brainly.com/question/23008798
#SPJ1
H2S (g) + 2O2 (g) ⇆ H2SO4 (l) Based on the table of values below for the following reaction at 298 K, determine ΔH, ΔS, ΔG, and whether the reaction is thermodynamically favored or not.
If the change in enthalpy is positive then reaction must be endothermic, it means all absorb energy while reaction proceed.
Given,
H2S(g) + 2 O2(g) → H2SO4 (l) ΔH = –235.5 kJ Equation (1)
H2S(g) + 2 O2(g) → SO3(g) + H2O(l) ΔH = –207 kJ Equation (2)
H2O(l) → H2O(g) ΔH = 44 kJ Equation (3)
From above given reaction,
Reverse the equation (1) reaction
H2SO4 (l) → H2S(g) + 2 O2 (g) ΔH = 235.5 kJ Equation (4)
Adding all equations (2), (3), and (4):
To get overall reaction is:
H2SO4 (l) → SO3 (g) + H2O (g)
Overall ΔH value is:
ΔH = 235.5 kJ - 207 kJ + 44 kJ
ΔH = 72.5 kJ
Overall change in enthalpy is +72.5 kJ.
The reaction is thermodynamically favored
Learn more about Gibb's here
https://brainly.com/question/17512540
#SPJ9
What quantity in moles of sodium atoms do you have if you have 3.80 × 10²³ atoms of sodium. (The mass of one mole of sodium is 22.99 g.)
The quantity in moles of sodium atoms is 0.631 moles of sodium if you have 3.80 × 10²³ moles of sodium.
What is moles?Moles is defined as a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules and some other specified particles.
It is a very important unit of measurement which chemist use. It can also be defined as the amount of substance that contain exactly 6.022 x 10²³ elementary entities in a given substances.
1 moles = 6.022 x 10²³ atoms
3.80 × 10²³ atoms of sodium will have
3.80 × 10²³ x 1 mole of Na / 6.022 x 10²³ atoms
= 0.631 moles of Na
Thus, quantity in moles of sodium atoms is 0.631 moles of sodium if you have 3.80 × 10²³ moles of sodium.
To learn more about moles, refer to the link below:
https://brainly.com/question/26416088
#SPJ1
Which velocity vs. time graph corresponds to the data represented by the position vs. time graph?
The velocity vs. time graph that corresponds to the info shown by the position vs. time graph is that the graph that has continuous acceleration (straight line).
The above statement of continuous acceleration means a relentless acceleration. A straight lines is just known to be a continuing acceleration that's said to be unchanging. Note that when there's a curved lines in a very graph, it implies that there's a non-constant acceleration. Therefore an object that's undergoing constant acceleration is one that may be seen in an exceedingly line. So therefore, the speed vs. time graph is one that matches with the information represented by the continual acceleration (straight line) on the graph.
Constant acceleration means that velocity changes at a constant rate with respect to time. If acceleration is made zero, velocity does not change. If acceleration is positive, the magnitude of velocity increases correspondingly.
To learn more about uniform motion, click below
https://brainly.com/question/479512
#SPJ9
Answer:
your answer is c your welcome
Explanation:
15 POINTS!!!! NEED ASAP!!!!
There is a lot of confusion in the world over the word "theory" in the world today, and most people assume that when someone says something is a "scientific theory" it is just a guess. However, we know that a scientific theory is a lot more than just a guess. For this discussion, write your opinion of how we could change the misconception that all scientific theories are just guesses, and make sure to use at least 4 sentences.
A scientific theory is backed up by pieces of evidence hence it is not a mere guess.
What is a scientific theory?A scientific theory is a well crafted explanation of an observed phenomenon. A scientific theory is different from a mere guess in the sense that the scientific theory must have some basis that support it.
A mere guess does not have any kind of data that supports it. Let us take the theory of evolution as an example. Countless discoveries of fossil evidences have shed some light on the probability of the theory. In this case, we can not consider it a mere guess since there is some kind of evidence that supports the claims of the theory.
Learn more about scientific theory:https://brainly.com/question/2385866
#SPJ1
The Haber process is used to synthesize ammonia (NH₂) on a large scale by the reaction of nitrogen gas with hydrogen gas as follows:
N2 (a) + 3 H2 (al 2 NH3 (al
Consider a reaction between a 11.67 L flask containing nitrogen gas and a 12.3 L flask of hydrogen gas. Both gases have a temperature of 288 K and the pressures inside both
flasks is 0.87 bar.
What mass of ammonia (in g) would you expect to be produced at temperature 288 K and a pressure of 0.87 bar?
The mass of ammonia gas produced by the given volume of hydrogen and nitrogen is 5.066 g.
What mass of ammonia g would be produced at temperature 288 K and a pressure of 0.87 bar?The mass of ammonia in grams would be produced at temperature 288 K and a pressure of 0.87 bar is determined using the ideal gas equation.
The ideal gas equation is as follows;
PV = nRT
where;
P is pressure
V is volume
n is number of moles
R is molar gas constant = 8.314 × 10⁻² L.bar.K⁻¹.mol⁻¹
T is temperature in kelvin.
number = mass/molar mass
Considering the data provided, the moles of each gas present in their containers are as follows;
n = PV/RT
moles of nitrogen gas:
P = 0.87 bar, V = 11.67, R = 8.314 × 10⁻² L.bar.K⁻¹.mol⁻¹, T = 288 K
n = 0.87 * 11.67/8.314 × 10⁻² * 288
n = 0.424 moles
moles of hydrogen gas:
P = 0.87 bar, V = 12.3, R = 8.314 × 10⁻² L.bar.K⁻¹.mol⁻¹, T = 288 K
n = 0.87 * 12.3/8.314 × 10⁻² * 288
n = 0.447 moles
The equation of the reaction is given below:
N₂ (g) + 3 H₂(g) → 2 NH₃ (g)
From the equation, mole ratio of nitrogen to hydrogen is 1 : 3, therefore, hydrogen is the limiting reactant.
Moles of ammonia gas produced = 0.447 * 2/3 moles
Moles of ammonia gas produced = 0.298 moles
molar mass of ammonia gas = 17.0 g/mol
Mass of ammonia gas produced = 0.298 moles * 17.0 g/mol
Mass of ammonia gas produced = 5.066 g
Learn more about the molar gas constant at: https://brainly.com/question/27445708
#SPJ1
A 15.8 g sample of chromium (III) chloride (CrCl3) contains 10.6 g of chlorine. What mass of chromium is contained within a sample of chromium (III) chloride with mass of 83.1 g?
Mass of chromium contained within a sample of chromium (III) chloride with mass of 83.1g is 27.25 g
Any of the chemical compounds having the formula CrCl3 . x H2O, where x is one of 0, 5, or 6, is referred to as chromium(III) chloride. Violet solid represents the anhydrous CrCl3 chemical.One approach to show the concentration of an element in a compound or component in a combination is as a mass percentage. The mass percentage is computed by dividing the total mass of the combination by the mass of each component and multiplying the result by 100%.Given,
chlorine present in 15.8 g of sample of chromium (III) chloride is 10.6g
we have to find out mass of chromium present in 83.1 g of chromium (III) chloride.
First step is to find out mass percentage of chlorine and chromium atom in CrCl3.
No. of atoms of chromium in chromium (III) chloride = 1
molar mass of chromium = 52 g/mol
Total mass of element = 52 × 1 = 52
No. of atoms of chloride in chromium (III) chloride = 3
molar mass of chloride = 35.5g/mol
Total mass of element = 35.5 × 3 = 106.5
Total mass of chromium (III) chloride = 158.5 g/mol
mass percentage of chromium = 32.8 %
mass percentage of chloride = 67.1 %
So, the mass of chromium present in chromium (III) chloride = (32.8 / 100) × 83.1
= 27.25 g
Therefore mass of chromium in 83.1g of chromium (III) chloride is 27.25 g
Learn more about mass percentage here:
https://brainly.com/question/15182450
#SPJ9