Question

Calculate number of moles,molecules,total number of atoms and volume at STD for 88gram carbon dioxide ​

Answer 1

Answer:

no. of moles = mass in gram/molar mass

= 88/44 mol

= 2 mol

One molecule has molecular mass 44 amu or grams

here we have 88 amu or grams

so 88/44 = 2 molecules

1 mole contains = 6.023*10raise to power 23 atoms

so 2 moles will have 2 * 6.023 * 10 raise to power 23 atoms

i.e. 12.046 * 10 raise to power 23 atoms at STP.