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Zina [86]
3 years ago
8

What distinguishes physical properties from chemical properties

Chemistry
1 answer:
ale4655 [162]3 years ago
6 0

A physical property is an aspect of matter that can be observed or measured without changing it. A chemical property may only be observed by changing the chemical identity of a substance.


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What mass of water can be obtained from 4.0 g of H2 and 16 g of O2?2 H2 + O2 ---> 2 H2O18 g36 g54 g9 g
SashulF [63]

Answer:

18 g is the mass produced by 4 g of H₂ and 16 g of O₂

Explanation:

The reaction is:

2H₂  +  O₂  →  2H₂O

So, let's find out the limiting reactant as we have both data from the reactants.

Mass / Molar mass = moles

4 g/ 2g/m = 2 moles H₂

16g / 32 g/m = 0.5 moles O₂

2 moles of hydrogen react with 1 mol of oxygen, but I have 0.5, so the O₂ is the limiting.

1 mol of O₂ produces 2 mol of water.

0.5 mol of O₂ produce  (0.5  .2)/1 = 1 mol of water.

1 mol of water weighs 18 grams.

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One peanut M&M weighs approximately 2.33 g.
Sphinxa [80]

Answer:

There are 23076 peanut M&M's in 53.768 kg of M&M's.

Explanation:

First we <u>convert 53.768 kg into g</u>:

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Then we <u>divide the total mass of M&M's by the mass of one peanut M&M,</u> in order to calculate the answer:

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So there are 23076 peanut M&M's in 53.768 kg of M&M's.

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What is the difference between theme and plot?
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Answer:

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The size of camphor kept in store house gradually decrease in size after few а days? ​
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Because it goes through the process of sublimation.

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