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Drupady [299]
3 years ago
13

How many moles are in 125g of water?

Chemistry
1 answer:
ki77a [65]3 years ago
7 0
To calculate number of moles, all you do is divide the given mass by the molecular molar mass: 

<span>i.e. 125g / 18g = 6.94444g </span>

<span>Therefore, your answer is (a) 6.94 g</span>
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1. How many atoms are there in 2.8 moles of carbon? You must show your work to receive credit.
Zolol [24]

Answer:

The answer to your question is

1.-  1.686 x 10²⁴ atoms

2.- 0.25 moles

Explanation:

1.-

              1 mol ---------------- 6.023 x 10²³ atoms

             2.8 moles ----------  x

              x = (2.8 x 6.023 x 10²³) / 1

              x = 1.686 x 10²⁴ atoms

2.-           1 mol ------------------ 6.023 x 10 ²³ molecules

               x moles -------------  1.50 x 10²³ molecules

              x = (1.50 x 10²³ x 1) / 6.023 x 10²³

              x = 0.25 moles                                                      

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