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mihalych1998 [28]
3 years ago
10

How many formula units are in 3.3 moles of NaCl?

Chemistry
1 answer:
Nookie1986 [14]3 years ago
3 0
<span>2.11046x10^-20 g Cu Is the right answer.</span>
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How many moles of calcium chloride are contained in a 333 gram sample?
Bogdan [553]

Answer & Explanation:

The molar mass of calcium chloride is 110.98 g/mol. We can use this information to solve this problem. We can set up our equation like this..

\frac{333 g(CaCl2)}{} *\frac{1mol(CaCl2)}{110.98g(CaCl2)}

Multiply straight across on the top and straight across on the bottom.

\frac{333}{110.98}

Now divide.

\frac{333}{110.98}=3.00

So, there are 3.00 moles of calcium chloride contained in a 33 gram sample which is answer choice D.

6 0
3 years ago
Perform the following mathematical operation and express the results to the correct number of significant figures. (0.102 x 0.08
Kobotan [32]

Answer:

<u>2.26 </u>

<u></u>

Explanation:

First you should know what are significant figures,

1 . All non - zero digits are significant.

2 . The zero between two non-  zero are significant.Ex 302 has 3 significant figures.

3. The zero before the decimal and before any non-zero digit is non significant. Example : 0.003 has only 1 significant figure.

4. The zero after non zero are non - significant . But the zeros after the decimal point are significant.

300 has only 1 significant figure

300.0 has 4 significant figure

The least number of significant figures present in the number should be there in the final answer of the calculation.

Look at the number having minimum significant digits :

It is 3 (every number has 3- significant figures ) So the answer should also contain 3 - significant figures.

\frac{0.102\times 0.0821\times 273}{1.01}

First solve the numerator part

\frac{2.285}{1.01}

=2.2635

Round off this number to 3 significant figures.

Answer is =<u> 2.26</u>

It has 3 - significant digit since all the digits are non-zero.

5 0
2 years ago
Density, Mass, or Volume is a physical property of matter?
ohaa [14]
Density is a physical property of matter
4 0
3 years ago
Write a balanced chemical equation based on the following: Solid magnesium metal reacts with chlorine gas to produce solid magne
iragen [17]

Answer:

Mg + Cl2 = MgCl2

I hope it helps

7 0
3 years ago
Why does the moon and the sun have the same mass.
svp [43]

Why does the moon and the sun have the same mass?

Answer: The difference is that, on the moon, you are much lighter than on the Earth, but you still have the same mass

3 0
2 years ago
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