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3 years ago

Which of the following is a pure substance? A. Air B. carbon dioxide C. soda D. salt water

Chemistry

2 answers:

VLD [36.1K]3 years ago

6 0

Hey There,

The answer to your Problem is

B. Carbon Dioxide

If this Helps May I have Brainliest?

uysha [10]3 years ago

4 0

B- Carbon dioxide, every other option listed is composed of more than one thing.

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Solutions in water are especially common, and are called aqueous solutions. Non-aqueous solutions are when the liquid solvent involved is not water.

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2 years ago

Convert 1.50μm2 to square meters

IrinaVladis [17]

1 micro meter = $10^{-6} meters$
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2 years ago

What is known as the amount of mass in a given volume?

Ganezh [65]

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2 years ago

How many total moles of ions are released when the following sample dissolves completely in water? Enter your answer in scientif

Katena32 [7]

Answer: The number of moles of strontium bicarbonate is $7.5\times 10^{-9}mol$

Explanation:

Formula units are defined as lowest whole number ratio of ions in an ionic compound. It is calculate by multiplying the number of moles by Avogadro's number which is $6.022\times 10^{23}$

We are given:

Number of formula units of $Sr(HCO_3)_2=4.55\times 10^{15}$

As, $6.022\times 10^{23}$ number of formula units are contained in 1 mole of a substance.

So, $4.55\times 10^{15}$ number of formula units will be contained in = $\frac{1}{6.022\times 10^{23}}\times 4.55\times 10^{15}=7.5\times 10^{-9}mol$ of strontium bicarbonate.

Hence, the number of moles of strontium bicarbonate is $7.5\times 10^{-9}mol$

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3 years ago