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larisa86 [58]
3 years ago
11

Which are chemical processes? (1 rusting of a nail, 2 freezing of water, 3 decomposition of water into hydrogen and oxygen gases

, 4 compression of oxygen gas)
a. 2,3,4
b. 1,3,4
c. 1,3
d. 1,2
e. 1,4?
Chemistry
1 answer:
konstantin123 [22]3 years ago
4 0
The answer is a hope it helps

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Vanyuwa [196]

Answer:

1.7

Explanation:

Density = M/V

When you divide 4.52 by 2.6, you get 1.738461538, which can be simplified to 1.7.

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A scientist studies the DNA of three different species. The DNA from species A is more similar to DNA from species B than DNA fr
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DNA A and B are probably the most closely related because cells get DNA from the parent cells therefor similar DNA comes from relatives.
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3 years ago
Explain why is it better to use images on hazard labels, rather than words
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In the case of an emergency where you might not have enough time to read several lines of writing, not to mention trying to find the hazard warnings when the whole bottle is probably covered in writing, it is much easier to locate and read universal hazard symbols.
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3 years ago
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can anyone answer these questions? this is due today so if anyone can help that’d be greatly appreciated
Olegator [25]

Answer:

5. Please Kemi, be careful not to place your feet on the lava flowing down from the mountain.

6. A Ore canbe defined as a natural solid material gotten from the earth,  which a metal or valuable mineral can be extracted from.

7. Diamond.

8. Fracture

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Explanation:

3 0
3 years ago
What volume would 3.01•1023 molecules of oxygen gas occupy at STP?
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First, find moles of oxygen gas: (3.01 x10^23 molec.)/(6.02 x10^23) =0.5mol O2


Second, multiply moles by the standard molar volume of a gas at STP:(0.5mol)(22.4L) = 11.2L O2
6 0
3 years ago
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