Answer:
Trees change over time.
Explanation:
In the summer, trees thrive on the nutrients the sunlight gives them. In the winter, their leaves change colors and they start to perish. Then, with a little bit of sunlight ad water, they can thrive again. Stars also start to perish at some point, but they do not thrive again. They continue perishing until they implode.
Calculate the molecular formula of a compound with the empirical formula CH O and a molar mass of 150 g/mol.
A) C2H4O2
B) C3H6O3
C) C4H8O4
D) C5H10O5
E) C6H12O6
The molecular formula : D) C₅H₁₀O₅
Further explanationGiven
The empirical formula CH₂O
The molar mass of 150 g/mol
Required
The molecular formula
Solution
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
(CH₂O)n = 150 g/mol
(12+2.1+16)n = 150
(30)n = 150
n = 5
If she traveled 10 m in 5 seconds, what was her average speed?
The two animals above are similar looking can reproduce. What can be inferred about these two animals
Answer:
What are the two animals?
Explanation:
Write the balanced equation for : potassium chlorite decomposing to potassium chloride and oxygen . (use —> for the arrow)
Answer: 2 KCIO3(s) + heat —> KCI (s) + 3 O2(g)
Explanation:
Why is it that the decomposition of nitroglycerin can result in so
much more volume than the decomposition of sodium azide?
Answer:
with the molecular formula C3H5(ONO2)3, has a high nitrogen content (18.5 percent) and contains sufficient oxygen atoms to oxidize the carbon and hydrogen atoms while nitrogen is being liberated, so that it is one of the most powerful explosives known.
Explanation:
NTG reduces preload via venous dilation, and achieves modest afterload reduction via arterial dilation. These effects result in decreased myocardial oxygen demand. In addition, NTG induces coronary vasodilation, thereby increasing oxygen delivery.
The decomposition of nitroglycerin can result in so much more volume than the decomposition of sodium azide nitroglycerin contains a lot of nitrogen (18.5%) and has enough oxygen atoms.
What is volume?A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, like the cubic metre or litre, or different imperial or US-standard units, including the gallon, quart and cubic inch. Volume and length (cubed) have a symbiotic relationship.
The total volume much a container is usually thought of as its capacity, not as the amount of space it takes up. In other words, the volume is the quantity of fluid (liquid or gas) that the container may hold. The decomposition of nitroglycerin can result in so much more volume than the decomposition of sodium azide nitroglycerin contains a lot of nitrogen (18.5%) and has enough oxygen atoms for the nitrogen to be liberated while also oxidising the hydrogen and carbon atoms.
Therefore, the decomposition of nitroglycerin can result in so much more volume than the decomposition of sodium azide nitroglycerin contains a lot of nitrogen (18.5%) and has enough oxygen atoms.
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What type of cell in the human body grows but does not undergo mitosis?
Answer:Skeletal muscle can undergo hypertrophy, as each cell gets bigger.
Explanation:
Answer:
Sperm cells and egg cells don't go through mitosis.
Explanation:
Why is it important to know the temperature of the water when dealing with ions in
an aqueous solution?
Water does not ionize at higher temperatures.
Water becomes very acidic when at low temperatures.
Temperature affects the concentration of water.
The ionization constant of water is usually given at 25 °C.
Water at a higher temperature will produce more ions than water at a lower temperature.
Answer:
temperature affects the concentration of water
PLEASE HELP ITS A MAJOR GRADE AND TODAY IS THE DEAD LINE
Answer: WAIT WHAT- YOU SHOULD BE MY FRIEND BTW SNAP IS kpurdham5
Explanation: ♂️
The original phase and final phase of a substance are shown. Phase Transition Original Phase Final Phase Solid Liquid What most likely happened during the phase transition?
Answer:
The question appears to speak to the process between Liquid and Solid phases of a substance and seeks to resolve what happened in between.
The short answer is that the solid melted.
Explanation:
Melting is the process of a solid becoming fluid. When the reverse happens, (that is a liquid being solid), is called solidification. There is a temperature at which substances take their liquid form. That temperature is called the melting point. The melting point of ice (that is the temperature at which it starts to turn back to water) for instance is 32 °F.
According to the mechanics of melting, the internal energy of the solid increases, because of exposure to heat and or pressure usually through the application of heat or pressure, which increases the substance's temperature to the melting point.
Cheers
Answer:
Explanation:
the other guy who answered must be retded cause melting isnt even a choice.
Correct Option the substance froze.
A student dissolves 8.00 g of NH4NO3(s) in 100. g of H2O(l) in a coffee-cup calorimeter. Based on the initial and final temperatures of the mixture in degrees Celsius shown in the diagram above the laboratory setup, what is the calculated ΔT of the water reported to the appropriate number of significant figures?
Describe how innate behaviors and learned behaviors differ? If you tell me the answer i will give you a brainliest answer :)
Answer:
The difference between an innate behavior and a learned one is that innate behaviors are those an animal will engage in from birth without any intervention. Learned behavior is something an animal discovers through trial, error and observation.
Explanation:
POV: You buy a composite cup at the store. Explain the reason for your decision.
I think this is chemistry I have no clue.
Answer:
i bought it cuz i need a cup?
Explanation:
Answer:
Best chemistry ever tho
Explanation:
LOL
why is digital better then analog music
Once a digital recording is made, the bandwidth is set in place. An analog recording is considered unlimited. Therefore, it can move to a higher and higher resolution without losing its original quality.
what elements can calcium nitrate be decomposed into
Answer:
when heated to incandescence, calcium nitrate decomp into /nitrogen oxide, calcium oxide and oxygen/
Explanation:
Answer:
Explanation:
Do you mean what elements is Ca(NO3)2 made from? I think that's what you mean. Every mol of Ca(NO3) contains
Ca = 1 mol
N = 2 mols
O6 = six moles of oxygen
Answer this chemistry question below
For each type of fuel shown in the table above (H2, CH4, O2), how much energy should
be added to the system in order to break the bond between the atoms forming the
molecule of the fuel?
Answer:
Explanation:
Chapter 4: Energy from Combustion The primary means of generating energy for human
endeavors is the combustion of fuels.
Coal - burned in power plants
Gasoline - burned in automobiles
Natural gas - heating
Heating oil – heating
.Propane, charcoal, wood, candles, …
Combustion (burning in air) releases the chemical energy,stored in the chemical bonds of the fuels.
BRAINLY PLZ
4. How many moles of H, would be
produced from 47 grams of H2SO4?
2A1 +3H,504 → Al2(SO4)3 +3H2
Answer:
0.48 moles of H₂ are produced.
Explanation:
Given data:
Number of moles of H₂ produced = ?
Mass of H₂SO₄ = 47 g
Solution:
Chemical equation:
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂
Number of moles of H₂SO₄ :
Number of moles = mass/molar mass
Number of moles = 47 g/ 98 g/mol
Number of moles = 0.48 mol
Now we will compare the moles of H₂SO₄ and H₂
H₂SO₄ : H₂
3 : 3
0.48 : 0.48
Thus, 0.48 moles of H₂ are produced.
Use the following equation to answer the question below. How many moles of iron are made from 8.25 moles of Fe2O3?(see pic for equation)
Mg2OH has how many unique elements?
A.
4
B.
2
C.
3
D.
5
Answer:
Magnesium hydroxide has 3 unique elements.
Explanation:
Long story short, 2 is the balancing compound in structure to make up hydroxide, therefore 1 compound would be left to create Mg(2O)H.
(This is only an opinion of mathematical science to me, I don't have complete understanding of this subject either, good luck.)
What type of climate is characteristic of temperate grassland
A) warm weather all year long
B) Deep, fertile soil
C) Low annual precipitation
D) Giraffes, zebras, and wildebeests
Answer:
I am expecting that is option is d is correct answer
Explanation:
because in the grassland some animals can live
research ocean currents and how they relate to heat transfer.
Answer:
The movement of this heat through local and global ocean currents affects the regulation of local weather conditions and temperature extremes, stabilization of global climate patterns, cycling of gases
why is it important for the appendages of an arthropod to be joined
Answer:
you mean "jointed." jointed appendages give arthropods much greater movement flexibility and range.
7. What is a meteorite? It is a
A. dim meteor
B. bright meteor
C. meteoroid that lights up
D. remains of meteoroids that hit the Earth
8. What is a comet? It is a/an
A. rock from Mars
B. class of smaller inner solar system bodies that orbit around the sun
C. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail
when it travels close to the sun
D. natural object from small to huge that originates in space and survives the
impact on the earth's surface
9. What composes silicate?
A. silicon, oxygen, and at least one metal
B. silicon, carbon, and at least one metal
C. silicon, methane and a rock
D. iron, nickel, and argon
10. Why do scientists study comets?
A. They are valuable minerals.
B. They could provide Earth with rocks.
C. They can help make the Earth a habitable planet.
D. They provide information how the Earth obtained liquid water.
11. Why would global temperature of the Earth drop when struck by a massive
asteroid?
A. The resulting cloud would block out sunlight.
B. The low temperature of asteroid would chill the oceans.
C. The impact would move the Earth farther from the Sun.
D. The ice in the asteroid would increase the Earth's reflective power.
12.When objects strike a surface of a planet, they leave a deep impression on the
surface called
A. canyon
B. crater
C. plateau
D. pothole
13. Meteoroids are formed when asteroids collided and crushed into pieces. Based
on this statement, where did the meteoroids originate?
A. Asteroid Belt
B. Mars
C. Moon
D. Sun
7. Remains of meteroids that hit down the earth.
8. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.
9. silicon, oxygen and at least one metal.
10. They provide information how the Earth obtained liquid water.
11. The resulting cloud would block out sunlight.
12. crater
13. Asteroid Belt
7. A meteorite is remains of meteoroids that hit down the earth.
8. A comet is an icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.
What are meteoroids ?The term meteoroids is defined as the small rock pieces that revolve around the Sun.They typically consist of gases, ice particles, and dust.
9. The composes silicate are silicon, oxygen and at least one metal.
10.The scientists study comets because they provide information how the Earth obtained liquid water.
11. The global temperature of the Earth drop when struck by a massive
asteroid because the resulting cloud would block out sunlight.
12. When objects strike a surface of a planet, they leave a deep impression on the surface called crater.
13. Meteoroids are formed when asteroids collided and crushed into pieces. Based on this statement, the meteoroids originate in Asteroid Belt.
Thus, A meteorite is remains of meteoroids that hit down the earth.
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On a cold, winter day, Sheena rubs her hands together to warm them up. How could Sheena actions be used to explain the Law of Conservation of Energy?
Answer:
When she rubs her hands together, it causes heat or friction
PLEASE ASAP
Determine the mass, in grams, for 1.20e24 molecules of H₂
Answer:
3.98g
Explanation:
Given parameters:
Number of molecules = 1.2 x 10²⁴ molecules
Unknown:
Mass of H₂ = ?
Solution:
To find the mass of this molecule, we use the expression below:
Mass = number of moles x molar mass
Molar mass of H₂ = 2(1) = 2g/mol
6.02 x 10²³ molecules are contained in 1 mole of a substance
So; 1.2 x 10²⁴ molecules will have [tex]\frac{1.2 x 10^{24} }{6.02 x 10^{23} }[/tex] = 1.99 moles of H₂
Mass of H₂ = 1.99 x 2 = 3.98g
A dry cleaning solvent (molar mass = 146.99 g/mol) is a compound containing C, H & Cl is suspected to be a cancer causing agent. When a 0.250g sample was studied by combustion analysis, it was found that 0.451g of CO2 and 0.0617g of H2O were produced. From this data determine the empirical and molecular formula of the dry cleaning agent.
Answer:
Okay so set up an equation for what's happening
_C + _H + _Cl + O2 --> _CO2 + _H2O
0.451g of CO2. Convert to moles by using the molar mass of CO2 which is 44 g/mol. Now look at the ratio between Carbon and Oxygen in CO2. It's 1C:2O You just want to find C.. so do the number of moles CO2 and multiply it by 1 since the ratio says 1 carbon atom. Now you have moles of carbon. Put this number aside for later.
Do the same thing with H2O. Convert to moles by using the molar mass of H2O which is 18 g/mol. Now look at the ratio between Hydrogen and Oxygen. It's 2H:1O You just want H.. so do the number of moles of H2O and multiply it by 2 since there's 2 hydrogen atoms. Now you have the moles of hydrogen & put this number aside for later
Lastly, you need to find the chlorine. uuhhh I cant figure this part out
Explanation: ..
I hope I helped lol!
which cycle results in death of the host cell
A.lytic cycle
B.lysogenic cycle
C.both
Answer:
A. lytic cycle is the correct answer
What is the sequence of coefficients that will balance the following decomposition reaction of dihydrogen monosulfide? H₂S ----> H₂ + S₈
8 S
In this case you must start balancing the sulfur to have 8 on each side of the reaction. So:
Answer:
Explanation:
The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.
Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.
The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.
By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.
Then, taking into account all of the above, you can determine the amount of elements on each side of the equation:
Left side: 2 H and 1 S
Right side: 2 H and 8 S
In this case you must start balancing the sulfur to have 8 on each side of the reaction. So:
8 H₂S → H₂ + S₈
Now the amount of elements on each side of the equation:
Left side: 16 H and 8
Right side: 2 H and 8 S
Now you need to start balancing the hydrogen to get the same amount from each side of the reaction. So:
8 H₂S → 8 H₂ + S₈
Now the amount of elements on each side of the equation:
Left side: 16 H and 8
Right side: 16 H and 8 S
The balanced reaction is:
8 H₂S → 8 H₂ + S₈
30 POINTS PLEASE TELL ME HOW TO SOLVE THIS!!
If you have 3.4grams of carbon how many
moles of carbon would you have?
Answer:
3 moles of carbon atoms is equivalent to 36 gm carbon.
In 12gm carbon there are 6.023*10^23 atoms.
So in 36 gm there are 3*6.023*10^23 atoms.
so the answer is 18.069*10^23 atoms.
Explanation:
Explanation:
moles = mass in gm/ molar mass =3.4/12= 17/60
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You have been given a choice of four elements; Lithium, Magnesium, Sulfur, and Bromine. You must decide which two elements would form a compound that has one atom of the metallic atom and two of the non-metallic atom in the final neutral compound. Which choice lists the two atoms with the correct formula for the compound?
A.
Magnesium and Sulfur; MgS2
B.
Lithium and Bromine; LiBr2
C.
Lithium and Sulfur; Li2S
D.
Magnesium and Bromine; MgBr2
The compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
The periodic table has been the arrangement of the elements with increasing atomic number and similarity in the reactivity.
The metals in the periodic table are elements that has been able to accept electrons, and nonmetals are the elements in the table that loses electrons to attain the stable noble gas configuration.
Formation of a neutral compoundThe metal and nonmetal form the neutral compound when there has been the formation of stable compound with the complete configuration.
The magnesium and lithium has been metals, while sulfur and bromine are nonmetals. Bromine has been the element of group 17. It has been able to gain an electron. Sulfur has been the nonmetal and required 2 electrons to complete its octet.
Lithium has been the metal with one valence electron, and magnesium with 2 valence electrons.
The neutral compound to be formed has been consisted of one metal with 2 valence electrons, and 2 nonmetals with 1 valence electrons.
Thus, the compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
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