Question

calculate the number of moles present in 124g of hydrogen carbonate and find the no. of atoms and elements present ​

Answer 1

Answer:

h. co3

1. 2. formula h2co3

mass of 1 mole=1×2+12+16×3

2+12+48

62u

or 62g=1 mole

124g=X moles

(by cross multiplication)

62x= 124g

X=124/62

X=2 moles