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Alona [7]
3 years ago
8

Can someone please help with this 4 mark question!

Chemistry
1 answer:
saul85 [17]3 years ago
4 0

Answer:

6.941 u

Explanation:

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You decide you want to carry a boulder home from the beach. It is 20 centimeters on each
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Answer:

Weight of boulder = 22,400 gram

Explanation:

Given:

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Weight of boulder

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Weight of boulder = Volume x Density

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3 years ago
A body, upon heating, becomes red first, then yellow, and then other colors. Why?
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you are given an unknown liquid and asked to determine its identity. You can measure only one physical property. you decide to h
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Answer:

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Explanation:

8 0
3 years ago
a solution containing 80 g of KCL in 200 g of H2O at 50 degrees celcius is cooled to 20 degrees celcius. How many grams of KCL r
Varvara68 [4.7K]

Answer:

12g KCl will be crystallized

Explanation:

To solve this problem you need to know solubility of KCl in water at 20°C is 34g per 100g of water.

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As solution containing 80g of KCl, the extra KCl will be crystallized after cooling, that is:

80g of KCl - 68g of KCl = <em>12g KCl will be crystallized</em>

I hope it helps!

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Why should the stopper of a chemical reagent container be handled carefully?
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