Question

Calculate the mass mass of 12.044×10^23 mole of water​

Answer 1

One mole of O2 = 32 gm
6.022 × 1023 molecules of O2 have mass = 32 gm

So, 12.044 × 1025 molecules of O2 will have mass = 6400 gm = 6.4 Kg

Answer 2

Explanation:

assume you are required to find number of moles of 12.044 x 10^23 molecules of water.For this we will use well-known formula :

N(number of molecules)=n(number of moles) x NA(constant), the result is therefore equal to

n=N/NA = 12.044* 10^23 molecules/ 6.02 * 10^23 molecules/mol = 2mol