this is a model of a water molecule.\nelement mass (u)\nhydrogen 1\noxygen 16\nwhich evidence can be used to…

this is a model of a water molecule.\nelement mass (u)\nhydrogen 1\noxygen 16\nwhich evidence can be used to determine that this is an accurate model of a water molecule?\na. all pure water samples include half the mass of hydrogen than they do of oxygen.\nb. all pure water samples include twice the mass of hydrogen than they do of oxygen.\nc. all pure water samples include eight times the mass of oxygen than they do of hydrogen.\nd. all pure water samples include sixteen times the mass of oxygen than they do of hydrogen.

this is a model of a water molecule.\nelement mass (u)\nhydrogen 1\noxygen 16\nwhich evidence can be used to determine that this is an accurate model of a water molecule?\na. all pure water samples include half the mass of hydrogen than they do of oxygen.\nb. all pure water samples include twice the mass of hydrogen than they do of oxygen.\nc. all pure water samples include eight times the mass of oxygen than they do of hydrogen.\nd. all pure water samples include sixteen times the mass of oxygen than they do of hydrogen.

Answer

Explanation:

Step1: Recall water molecule formula

A water molecule is $H_2O$. It has 2 hydrogen atoms and 1 oxygen atom.

Step2: Calculate mass - ratio

The mass of a hydrogen atom is 1 u and the mass of an oxygen atom is 16 u. In a water molecule, the total mass of hydrogen is $2\times1 = 2$ u and the mass of oxygen is 16 u. The ratio of the mass of oxygen to the mass of hydrogen in a water - molecule is $\frac{16}{2}=8$. So, all pure water samples include eight times the mass of oxygen than they do of hydrogen.

Answer:

D. All pure water samples include eight times the mass of oxygen than they do of hydrogen.