Question

plzzz answer plzzz chemistry class ten​

Answer 1

1 atom of sodium:

22.99 amu

10 molecules of argon:

Argon has monoatomic molecules

Mass of one molecule: 39.95 amu

Mass of 10 molecules: 399.5 amu

1 molecule of CO2

Mm(C) +2Mm(O)

= 12 + 16×2

= 12 + 32

= 44 amu

1 molecule of H2SO4

2Mm(H)+Mm(S)+4Mm(O)

=2×1+32+16×4

=2+32+64

=98amu

Note; Atomic mass of one oxygen atom is 16, not 32 as given in the question. 32 is the molecular mass of O2 molecule.