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tekilochka [14]
3 years ago
5

3. The air today is approximately one-fifth

Chemistry
1 answer:
Darina [25.2K]3 years ago
8 0

Answer: 40cm^3

Explanation:

Since the The air today is approximately one-fifth oxygen, the approximate volume of oxygen in 200cm3 of air would be:

= 1/5 × 200

= 40cm

The answer is 40cm^3

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Eduardwww [97]
Salutations!

A kind of sedimentary rock formed from plant material over a long period of time is __________.

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3 years ago
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mestny [16]

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6 0
4 years ago
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We have 25cm^3 of 0.1mol AgNO3.

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This reaction produces 0.358g of AgCl and 0.213g of NaNO3

Les Mclean PhD

6 0
2 years ago
Theories in science can be disproved through new or extended research. <br>1. True <br>2. False
tresset_1 [31]

Answer:

True

Explanation:

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4 0
3 years ago
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An isothermal plug flow reactor is used to remove an environmental contaminant from polluted water via a 2nd-order reaction. A r
evablogger [386]

Answer:

The exact result is 82.5 min (close to c. 80 min)

Explanation:

Hello,

In the following picture you'll find the numerical procedure for this exercise.

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