Question

calculate the number of moles 250mg of carbon, 15g of sodium chloride​

Answer 1

Answer:

given mass :- 250mg of carbon

atomic mass of carbon = 12g

given mass :- 15g of sodium chloride

molecular mass = 23 + 35.5

= 58.5g

moles = 0.25

Answer 2

Answer:

20.9

Explanation:

mole=mass÷molar mass

mole=250÷12=2.09