Please help me ..If you don't have a question or something to say just comment don't steal my points . It's not fair. Here are the questions:

Question

asked Jun 13, 2022 153k views

2 Answers

Lenn · Answer 1 · 2022-06-17T09:46:46+0000

1.

$1.20 \: mol * \frac{6.02 * {10}^(23) }{1 \: mol} = 7.224 * {10}^(23) atoms$

2.

$9.25 * {10}^(25 \:) molecules * \frac{1 \: mol}{6.02 * {10}^(23) }$

$= 153.654485 \: moles$

3.

molar mass = 3(24.31) + 127.60 + 5(32.07)

molar mass = 360.88 g

4.

molar mass = 3(58.93) + 2(30.97) + 8(16.00)

molar mass = 366.73 g

5.

molar mass = 98.09

$125 \: g * (1 \: mol)/(98.09 \: g) = 1.274339892 \: moles$

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I'm too lazy to do the rest but you should get a general idea of how to do it.

Also, round as you wish!