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N76 [4]
3 years ago
11

If you were asked to convert 4.2 × 1022 atoms of aluminum to moles, which of the following should you use for the conversion?

Chemistry
1 answer:
maksim [4K]3 years ago
7 0
<span><span>4.2×<span>1022</span></span><span>NA</span></span><span> N_{A} is the avagadro number</span>
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3 years ago
1.Light waves (shown) are an example of what type of wave? (Lesson 4.03)
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6 0
3 years ago
The pressure inside a gas cylinder is 3,506 mmHg. How many atmospheres of pressure is the gas exerting on the cylinder?
PSYCHO15rus [73]
Below are the choices:

a)0.2168 atm 
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Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
7 0
3 years ago
Read 2 more answers
Which of the following bonds is least reactive?<br><br> C—C<br> H—H<br> O—H<br> H—Cl
valentinak56 [21]
The correct option is H - H
Compare to other type of bonds given above, the hydrogen to hydrogen bond is very unreactive. This is because the bond is very stable. Each of the hydrogen atom in the bond donate their single electron to form a covalent bond, which is quite stable.
8 0
3 years ago
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What is the amount of Al2S3 remains when 20.00 g of Al2S3 and 2.00 g of H2O are reacted? A few of the molar masses are as follow
Irina18 [472]
From the equation, we can tell that 1 mol of Al₂S₃ requires 6 moles of water.
The molar ratio is 1/6
Moles of Al₂S₃ present = 20/150.17
= 0.133
Moles of water present = 2/18.02
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The moles of Al₂S₃ that will react are:
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= 0.0185
The remaining amount:
0.133 - 0.0185
= 0.1145 mol
Or
0.1145 * 150.17
= 17.19 grams
6 0
3 years ago
Read 2 more answers
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