Question

Avogadro's number is 6.022 x 1023
atoms or particles of any substance. If you are told you have 8.324 x 1023
atoms of zinc, how many moles of zinc do you have? You many use the Desmos calculator linked here if needed. Please report your answer to the nearest tenth place, or one decimal. The units of mol are provided for you. (1 point)
mol of Zn
Question 2
How many molecules of water are present in 8.7 moles of water? (1 point)
Responses

5.2 x 1024 molecules
5.2 x 1024 molecules

4.7 x 1024 molecules
4.7 x 1024 molecules

6.022×1023 molecules
6.022×1023 molecules

4.69 molcules
4.69 molcules
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Answer 1

Q1: (8.324×10^23) / (6.022×10^23) = 1.381 ≈ 1.4 mol of Zn

Q2: 8.7 mol × 6.022×10^23 = 5.239×10^24 ≈ 5.2 × 10^24 molecules (correct choice: 5.2 x 10^24 molecules)