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KIM [24]
3 years ago
12

How many total atoms does each element have? Plz help!

Chemistry
1 answer:
VLD [36.1K]3 years ago
7 0

Answer:

14 Calcium (4x3+2)

2 Phosphurus (2)

9 Oxygen (4x2+1)

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How many molecules are present in each sample?8.55 mol SO2 :molecules SO2 0.603 mol CO :molecules CO a sample of NH3 containing
sineoko [7]

Answer:

- 5.15×10²⁴ molecules of sulfur dioxide

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Explanation:

We begin from the relation that 1 mol of molecules contains NA of molecules

NA = 6.02×10²³

Now, we make rules of three:

1 mol has 6.02×10²³ molecules, therefore:

8.55 moles of SO₂ must have (8.55 . NA) / 1 = 5.15×10²⁴ molecules of dioxide

0.603 moles of CO must have (0.603 . NA) / 1 = 3.63×10²³ molecules of monoxide

Avogadro's Number of molecules of NH₃ are 6.02×10²³ molecules of ammonia

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Please help with the attached picture question 21, 22, 23
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Explanation:

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