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Westkost [7]
3 years ago
5

Which of these are examples of physical changes? Check all that apply. burning wood freezing water cutting paper iron rusting mi

xing water and acetone
Chemistry
2 answers:
rodikova [14]3 years ago
5 0
Cutting paper
freezing water
mixing water
acetone
Colt1911 [192]3 years ago
4 0

<u>Answer:</u>

freezing water

cutting paper

mixing water and acetone




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Water and carbon dioxide are both made of 3 atoms<br> True or false
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One of the most difficult solar energy design problems to solve is:
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Andru [333]
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4 0
3 years ago
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In the reaction N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to nitrogen?
uranmaximum [27]

Answer: The mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

Explanation:

•Mole ratios are determined using the coefficients of the substances in the balanced chemical equation. •Each coefficient represents the number of mole of each substance in the chemical reaction.

•The mole ratio can be determined by first writing out a balanced chemical equation for the reaction.

For this reaction the balanced chemical equation is

N2(g) + 3H2(g) ----> 2NH3(g)

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From the equation we can see that 1 mole of N2(g) reacts with 3 moles of H2(g) or 3 moles of H2(g) react with 1 mole of N2(g) to produce 2 moles of NH3(g).

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7 0
3 years ago
Help meeeee brainliest for whoever helps
neonofarm [45]

Answer:

no

Explanation:

8 0
3 years ago
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