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a_sh-v [17]
3 years ago
11

Why does mass of popcorn stay the same after popping it

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
3 0

Answer:

Explanation:

it stays the same because the seeds or whatever in the bag was still the pop corn just not fully devloped

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Choose all of the following mole ratios that are correct for the reaction given below. Be sure to choose all that apply.
Dennis_Churaev [7]

Answer:

2 moles NH3 = 1 mole of N2

3 moles of H2 = 1 mole of N2

3 moles of H2 = 2 moles of NH3

Explanation:

The balanced equation for the reaction is given below:

N2 + 3H2 —> 2NH3

From the balanced equation above,

1 mole of N2 reacted with 3 moles of H2 to produce 2 moles of NH3.

Thus, we can say that:

1 mole of N2 = 3 moles of H2

1 mole of N2 = 2 moles of NH3

3 moles of H2 = 2 moles of NH3

Thus, considering the options given above, the right answers to the question are:

2 moles NH3 = 1 mole of N2

3 moles of H2 = 1 mole of N2

3 moles of H2 = 2 moles of NH3

5 0
3 years ago
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How long will it take Barium-142 to decay to 25% of its original size?
Leya [2.2K]

Answer:

5.68

Explanation:

just divide. hope this helps!

6 0
3 years ago
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1. Why is it necessary to equalize the pressure(i.e, have the water level the same in each tube) before taking a volume reading?
Anna11 [10]

Answer:

If you contact water with a gas at a certain temperature and (partial) pressure, the concentration of the gas in the water will reach an equilibrium ('saturation') according to Henry's law.

Explanation:

This means: if you increase the pressure (e.g. by keeping the vial closed), the CO2 concentration will increase. So it simply depends what concentration you need for your assay: 'CO2-saturated' water at low pressure or 'CO2-saturated' water at high pressure.

3 0
3 years ago
List three ways in witch the water reaches the atmosphere
meriva
Three ways water reaches from earth to atmosphere are
1. direct evaporation from the water bodies like sea,river,oceans
2. moisture from the land(you must have seen land dries out)
3.moisture from the plant(small capillaries from the plants sucks water from land n goes to atmosphere in form of vapour from leaves)
7 0
3 years ago
How many grams is 2.40 x 1023 molecules of N,O,? (5 pts)<br> PLS HELP ASAP
Tasya [4]

Answer:

30.26 grams of N₂O₃

Explanation:

Divide by Avogadro's number. This leaves you with the number of moles. Then, multiply by the molar mass of N₂O₃

6 0
3 years ago
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