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Chapter 11 - Heat and Thermodynamics - 11
1.
The relative atomic mass of chlorine is?
a) 35.453 amu
b) 12.00 amu
c) 17.00 amu
d) 1.008 amu
2.
The chemical formula of a compound that gives the simplest whole-number ratio of atoms of each element is known as?
a) empirical formula
b) molecular formula
c) structural formula
d) none of these
3.
The relative atomic mass of sodium is?
a) 44.98 amu
b) 22.98 amu
c) 12.00 amu
d) 6.00 amu
4.
The simplest ratio of hydrogen and oxygen in hydrogen peroxide H
2
O
2
) is?
a) 2 : 2
b) 2 : 1
c) 1 : 2
d) 1 : 1
5.
The relative atomic mass of Aluminium is?
a) 12.98 amu
b) 26.98 amu
c) 52.98 amu
d) 30.00 amu
6.
The empirical formula of hydrogen peroxide is?
a) H O
2
b) H
2 O
c) HO
d) H
2
O
2
7.
The empirical formula of glucose is?
a) C
6
H
12
O
6
b) CHO
c) C H O
2
d) C H
2
O
+
8.
The relative atomic mass of nitrogen is?
a) 15.9994 amu
b) 32.06 amu
c) 1.008 amu
d) 14.0067 amu
9.
The formula which gives the actual whole number ratio of atoms of each element present in a compound is known as?
a) molecular formula
b) compound formula
c) structural formula
d) empirical formula
10.
The molecular formula of hydrogen peroxide is?
a) H O
b) H
2
O
c) H
2
O
2+
d) H O
2
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