Question

(a) 6.02 X 1026
(b) 6.02 X 1023
(c)
The total number of atoms in 18 kg of water are:
(a) 6.02 X 1026
(b) 3.01 X 1023
(c)
Total number of electrons in 100 molecules of CO2
(a) 2.2 X 104
(b) 2.2 X 103
(c)
If you are asked to buy 3.42 kg sugar (C12H22011), h
(a) 1
(b) 10
(c)
What is the weight of 10 moles of CaCO3:​

Answer 1

Explanation:

1. given mass of water =18,000 g

molar mass of water=1*2+16 =18g

therefore total no. of atoms = (18,000/18)*6.022*10²³

=6.022*10²⁶

2. No. of electron=no.of protons

therefore no. of electrons in one molecule of CO2

6+8*2=6+16=22

hence in 100 molecules=22*100=2.2*10³

3.question is not complete. Sorry!!:-\