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Chem B

Authored by Charles Martinez

Chemistry

10th - 12th Grade

NGSS covered

Chem B
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15 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Determine the amount of moles in CuBr that are in 276.9 g of the compound.

3.2 mol

1.7 mol

2.110 mol

1.930 mol

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Find the mass of 5.82 mol of MgCl2.

554 g

436. g

55.2 g

555.9 g

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many molecules are there in 31.8 moles of water?

5.28 x 10-23 molecules
1.91 x 1025 molecules
5.28x 10-25
1.91 x 1022

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Determine the mass of 4.20 moles of C6H12

353 g

0.0499 g

337 g

2.53 x 1024 g

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)3?

1.26 moles

0.8 moles

7,670 moles

1.63 x 10-22 moles

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many molecules are in 84.0 g of C5H5N?

4.00 x 1027 molecules
6.40 x 1023 molecules
1.10 x 10-20 molecules
5.06 x 1025 molecules

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the molar mass of Hydrogen Peroxide (H2O2)?

48 g/mole
34.02 g/mole
36.5 g/mole
35.5 g/mole

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