Counting Atoms Question Preview (ID: 40281)


Practice Counting Atoms To Find Out If An Equation Is Balanced.

How many atoms of Hydrogen are present in 5H20?
a) 5
b) 2
c) 10
d) 7

How many atoms of Carbon are present in 3C2H12N6?
a) 3
b) 6
c) 2
d) 12

How many atoms of Oxygen are present in H2O?
a) 0
b) 1
c) 2
d) 3

How many atoms of Calcium are present 2NaCl?
a) 1
b) 2
c) 3
d) 4

How many atoms of Nitrogen are present in 2NH3?
a) 3
b) 6
c) 2
d) 1

How many atoms of Hydrogen are present in 2H2O + H3
a) 2
b) 4
c) 7
d) 10

How many different elements are there present in the compound NH4CO3?
a) 2
b) 9
c) 4
d) 1

How many atoms of Hydrogen are present in H2SO4?
a) 4
b) 1
c) 2
d) 6

How many elemetnts are present H2SO4?
a) 3
b) 2
c) 1
d) 4

Does this follow the Law of conservation of mass? Ag2O ------- Ag + O2?
a) Yes
b) No
c)
d)

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