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sweet-ann [11.9K]
2 years ago
11

Calculate the following expression and round your answer to the correct number of significant figures.

Chemistry
1 answer:
Butoxors [25]2 years ago
3 0

Answer:

63.9 cm

Explanation:

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Balance the following chemical equation.<br><br> CCl4 -&gt; ___ C+ ___ Cl2
Bingel [31]

Answer:

Explanation:

CCl4 => C + 2Cl2

6 0
2 years ago
If you test the boiling point of ethanol and have a 2.3% error, what was the boiling point of ethanol in the test?
anyanavicka [17]

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the answer is A

Explanation:

3 0
2 years ago
What’s the SI unit of the amount of isopropyl alcohol in a beaker?
Illusion [34]

Answer:

mole

Explanation:

The mole in chemistry is used to represent the amount of any substance. Just like quantifying everyday things like a dozen, score, gross etc, it is a convenient unit of quantity of particles. A mole denotes 6.02 x 10²³particles of a susbstance.

Therefore, a mole is the standard unit(SI) for the amount of isopropyl alcohol in a beaker.

7 0
3 years ago
What is the mass of a sample of NH3 containing 7.20 x 10^24 molecules of NH3?
leva [86]

Answer:203

Explanation: just have to timez

4 0
3 years ago
Hydrofluoric acid, hf(aq), cannot be stored in glass bottles because compounds called silicates in the glass are attacked by the
Trava [24]
1) Chemical equation

Na2 SiO3 (s) + 8 HF (aq) ---> H2 Si F6 (aq) + 2 Na F (aq) + 3H2O (l)

It is balanced

2) Molar ratios

1 mol Na2 SiO3 : 8 mol HF.

3) Proportion

0.340 mol Na2 SiO3 * 8 mol HF / 1mol Na2SiO3 = 2.72 mol HF.

Answer: 2.72 mol HF

5 0
3 years ago
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