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Moles and Relative Formula mass

Authored by J Davey

Science

10th Grade

NGSS covered

Used 1+ times

Moles and Relative Formula mass
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24 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find the relative formula mass of Na2CO3Na_2CO_3 .

[RAM; C = 12; O = 16; Na = 23]

83

90

106

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the relative formula mass of ammonium nitrate,  NH4NO3?NH_4NO_3?  
[Relative atomic mass: N = 14; H = 1; O = 16]

76

79

80

90

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of one mole of Al2(SO4)3?

75.04 g
342.14 g 
75.04 mol
342.14 mol

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles are there in 12.7g of CaF2?

0.20 mol
1,000.76 mol
6.14 mol
0.16 mol

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles of carbon atoms are there in 5g of carbon?

60 mol
17 mol
0.42 mol
7 mol

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of 9.4 moles of B2(Cr2O7)3?

6.41 x 1022g
5.67x1024 g
49.11 g
4,339.23 g

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles of (NH4)2O are present in 74.9 g?

3,907.0  moles
1.44 moles
8.67x1023moles
0.79 moles

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