Balanced Chemical Equation

CHEMISTRY 110
Assignment
[DATE]

Question 1
Balanced chemical equation
C5 H12 +8 O2 → 5C O2+6 H2 O
Sum of coefficients = 1 + 8 + 5 + 6 = 20
Question 2
Here, an acid is reacting with the base and thus, this reaction is an acid-base reaction.
Question 3
In order to form a stable ion, magnesium atom losses two electrons and forms Mg+2.
Question 4
The molecule of HC O3
−¿¿ has two equivalent Lewis structure or resonance structure as shown
below.
Question 5
Name of compound = Aluminium sulfate
Formula of compound ¿ A l2 ¿
Here,
1

Molar mass of Al = 27
Molar mass of S = 32.1
Molar mass of O = 16
Hence,
Molar mass of Aluminium sulfate = 2 (27) + 3 {32.1 + (16*4)} = 342.3 gram per mole
Question 6
3.75 moles of Cl represent = n grams of Cl
Mass of Cl = 35.5 gram per mole
1 mole has 35.5 gram of Cl
And thus, 3.75 moles would have n = 35.5*3.75 = 133.125 gram of Cl
Question 7
% composition of oxygen∈N H 4 N O3=?
Mass of O = 16
Mass of N = 14
Mass of H = 1
Total mass of 1 mole of N H3 N O3= ( 2∗14 ) + ( 4∗1 ) + ( 16∗3 ) =80 grams
Mass of O in compound = 16*3 = 48
% composition of oxyge n= 48
80∗100 %=60 %
Question 8
6.023∗1023atoms of Ca have 40 grams of Ca
2