Question

Assume 96500 c as one unit of electricity. If cost of electricity of producing x gm alis rs x, what is the cost of electricity of producing x gm mg?
by Elviinsingh9149 10.09.2019

Answer 1

Answer:

ANSWER

For Magnesium

m=1 gm

M=24 gm

No.ofMoles=

Molarmass

Mass

No.ofMoles=

24

1

=0.04 moles

No. of atoms in 1 mole =6.022×10

23

No. of atoms in 0.04 mole =0.04×6.022×10

23

=2.4×10

22

atoms

For Aluminium

m=10 g

M=27 g

No.ofmoles=

27

10

=0.37 moles

No. of atoms in 0.37 moles=0.37×6.022×10

23

=2.2×10

23

atoms

According to question

cost to deposit 2.4×10

22

atoms is =Rs 5

Cost to deposit 2.3×10

23

atoms is =

2.4×10

22

5

×2.2×10

23

=44 Rs