1. (nh)2cro-
a) number of moles of h:
b) number of moles of n:
2. ag. so.
a) molar mass:
b) percent composition of ag:
c) percent composition of s:
d) percent composition of o:

Question:

1. (NH)2CrO

a) Number of moles of H:

b) Number of moles of N:

a) Number of moles of H: 2

b) Number of moles of N: 2

Explanation:

The   is ammonium Chromate which is monoclinic and yellow Crystal that is formed due to the reaction of ammonium Hydroxide and ammonium di-chromate. It is used as catalyst, corrosion inhibitor as well as analytical inhibitors.

Question:

2. Ag.SO.

a) Molar Mass:

b) Percent Composition of Ag:

c) Percent Composition of S:

d) Percent Composition of O:

a) Molar Mass:   155.93 Kg

b) Percent Composition of Ag:   69%

c) Percent Composition of S:  20.5%

d) Percent Composition of O: 10.2%

Explanation:

Molar mass =   molar mass of Ag +  molar mass of S +  molar mass of O  

=>107.87+32.06+16

=> 155.93 Kg

Percent Composition of Ag

=

=

= 0.69 \times 100

= 69%

Percent Composition of S:

=

=

= 0.205 \times 100

= 20.5%

Percent Composition of O:

=

=

= 0.102 \times 100

= 10.2%

the answer would be a

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explanation: