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lawyer [7]
2 years ago
13

PLS HELP GIVING BRAINLIEST AND 100 POINTS

Chemistry
1 answer:
kondor19780726 [428]2 years ago
4 0
  • Air temperature and air pressure both decrease

The air pressure is low at higher altitudes. The pressure decreases up the higher altitudes. Same with temperature, as we go up the higher altitudes the temperature decreases as molecules becomes more far apart.

altitude ↑     ||     pressure ↓

altitude ↑     ||    temperature ↓

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If a gold bar is 16,000 g mass and 800 cm^3 volume what is the density?
ki77a [65]

Answer:

<h3>The answer is 20 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 16,000 g

volume = 800 cm³

We have

density =  \frac{16000}{800}  =  \frac{160}{8}  \\

We have the final answer as

<h3>20 g/cm³</h3>

Hope this helps you

5 0
3 years ago
Zinc reacts with iron (iii) chloride yielding zinc chloride plus iron
olasank [31]

Answer:

I don't see a specific question, so I'll make a few comments and hope that answers the reason for the post.

Explanation:

Zinc(Zn) does react with iron chloride, since zinc is a more reactive metal than the iron.

When Zn is introduced to an iron (III) chloride solution, the Zn disoplaces the Fe atom in a displacement reaction.

The chemical equation of the reaction:

Zn + Fe(III)Cl3 → ZnCl3 + Fe

Energy is often realeased in this type of reaction, since the resulting chemical products have a lower energy that the reactants.

There are several metals more reactive than iron.  One of the more interesting examples of a highly exothermic reaction with iron chloride (rust) is the reaction of aluminum with iron chloride.  `This is highly exothermic and is labelled a thermite reaction.  It provides a spectacular flame that is not enough to weld railroad tracks together.

6 0
2 years ago
Who else listens to sad music and think of something there not?
Likurg_2 [28]

Answer:

Meeee:(

Explanation:

8 0
3 years ago
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(Someone please help!)
ElenaW [278]

Answer:

COLORS

Explanation:

i looked it up lol

5 0
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What is the effect of temperature on the solubility of a solid in a liquid
krok68 [10]
For many solids<span> dissolved in </span>liquid<span> water, the </span>solubility <span>increases with </span>temperature<span>.</span>
7 0
3 years ago
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