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Chapter 1 - Fundamentals of Chemistry - 13
1.
Vinegar contains 2 carbon, 4 hydrogen and 2 oxygen atoms. What would be its empirical formula?
C
2
H
2
O
2
C H
2
O
+
C
2
H
4
O
2
CHO
2.
Caffein is found in?
vinegar
water
coffee
sugar
3.
Caffein has molecular formula C
8
H
10
N
4
O
2
. What is its empirical formula?
C
8
H
10
N
2
O
4
C
4
H
5
N
2
O
+
C
2
H
5
N O
2
CHNO
4.
The sum of atomic masses of all the atoms present in the molecule is known as?
molecular mass
formula mass
atomic mass unit
atomic mass
5.
Molecular mass of H
2
O is?
8.00 amu
2.016 amu
16.00 amu
18.016 amu
6.
The molecular formula of aspirin is?
C
8
H
9
O
4
C
4
H
8
O
9
C
9
H
8
O
4+
CHO
7.
If a compound contains carbon to hydrogen atoms in the ratio of 1:4. Its empirical formula would be?
CH
2
CH
C
2
H
C H
4+
8.
What is known as blood sugar?
glucose
fructose
galactose
mannose
9.
Molecular mass of glucose is?
24 amu
180.096 amu
150 amu
128 amu
10.
Molecular mass of C
10
H
8
is?
2 amu
80 amu
18 amu
128 amu
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