Chemistry
Stoichiometry
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#9 The total numbers of protons, electrons and neutrons in 12g of C - 12is :
A) 2.88 x 1025
B) 6.022 x 1023
C) 6.022 x 1022
D) 18
#10 Which has maximum number of atoms?
A) 24g of C (12)
B) 56g of Fe (56)
C) 27g of Al (27)
D) 108g of Ag(108)
#11 The number of mole of oxygen in 6.02 x 1024 CO molecules is
A) 1
B) 0.5
C) 5
D) 10
#12 How many mole of Oxygen are there in 0.5 mole of K2CrO7 ?
A) 7 mole
B) 6 mole
C) 4 mole
D) 3.5 mole
#13 How many moles of all atoms are there in 1.5 mole of H2SO4 ?
A) 7.6 mole
B) 8.5 mole
C) 10.5 mole
D) 12.8 mole
#14 How many mole of covalent bond are there in 0.5 mole of NH3 ?
A) 1.5 mole
B) 3 mole
C) 3.5 mole
D) 4 mole
#15 The number of mole of pi bonding electrons in 0.5 mole of CO2 is ?
A) 1 mole
B) 2 mole
C) 1.5 mole
D) 4 mole
#16 Which of the following statements is FALSE for the chemical equation given below in which nitrogen gas reacts with hydrogen gas to form ammonia gas assuming the reaction goes to completion?
N2 + 3H2 → 2NH3
A) The reaction of one mole of H2 will produce 2/3 moles of NH3
B) One mole of N2 will produce two moles of NH3
C) One moleculeof nitrogen requires three molecules of hydrogen for complete reaction
D) The reaction of three moles of hydrogen gas will produce 17g of ammonia
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