common salt obtained from sea water contains 96% NaCl by mass. the approx. no. of molecules present in 10 g of the salt is

a.1021

b. 1022

c. 1023

d. 1024

Question

common salt obtained from sea water contains 96% NaCl by mass
the approx no of molecules present in 10 g of the salt is
a 1021
b 1022
c 1023
d 1024

Anita Dahiya · Accepted Answer

Sea water contains 96% of NaCl by mass
Therefore, 100g of water will have 96g of NaCl
10g of water will have 9 6g of NaCl
Moles of NaCl in 9 6g of NaCl: (Molar mass of NaCl = 58 5g)
9 6 / 58 5 = 0 164 moles
Number of molecules in 9 6g, 0 164 moles = 0 164 * 6 023 *
10^23
= 9 87 * 10^22 molecules
= 10^23 molecules

common salt obtained from sea water contains 96% NaCl by mass. the approx. no. of molecules present in 10 g of the salt is a.1021 b. 1022 c. 1023 d. 1024

common salt obtained from sea water contains 96% NaCl by mass. the approx. no. of molecules present in 10 g of the salt is

a.1021

b. 1022

c. 1023

d. 1024