Question

Вычислить по формуле H2O массовые отношения её элементов

Answer 1

Mr(H2O)=2Ar(H)+Ar(O)
Mr(H2O)=(2*1)+16
Mr(H2O)=18
w(H)=(n*Ar(H))/(Mr(H2O))
w(H)=(2*1)/18
w(H)=0.11=11%
w(O)=(1*16)/18
w(O)=0.888=89%

Answer 2

Calculating the Mass Ratios of Elements in H2O

To calculate the mass ratios of the elements in H2O, we can use the molar masses of hydrogen (H) and oxygen (O) to determine the mass ratio of each element in the compound.

The molar mass of hydrogen (H) is approximately 1.008 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

Using this information, we can calculate the mass ratios of the elements in H2O:

- Hydrogen (H): - Molar mass: 1.008 g/mol - Percentage composition: 11.19% - Oxygen (O): - Molar mass: 16.00 g/mol - Percentage composition: 88.81% Therefore, the mass ratio of hydrogen to oxygen in H2O is approximately: - Hydrogen: 11.19% - Oxygen: 88.81%