When does a physical change occur

2 answers:

8 0

A physical change occurs when something is altered. Such as cutting a piece of paper or chopping a piece of wood into pieces. Melting ice, breaking glass, evaporating liquids are go through a physical change.

riadik2000 [5.3K]3 years ago

6 0

Physical changes occur when substances are mixed but don't chemically react.

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What is equal solute concentration inside and outside of the cell so water moves at equal rates?

Maru [420]

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Which changes of the state takes place when an igneous rock turns into sedimentary rock?

Katena32 [7]

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3. Given the following equation:

miskamm [114]

Answer:

4.767 grams of KCl are produced from 2.50 g of K and excess Cl2

Explanation:

The balanced equation is

2 K+ Cl2 --->2 KCI

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Number of moles is 2.5 grams = $\frac{2.5}{39.098} = 0.064$

So, 2 moles of K produces 2 moles of KCL

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What is the atomic mass of gold rounded to the nearest whole number

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The answer is 197
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