How much mass would a mole of hydrogen molecules contain? Recall that hydrogen is diatomic. g/mol

2 g/mol

Explanation:

The number of molecules contained in 1 mole of hydrogen gas is equal to Avogadro number:

So, this is the number of molecules in 1 mole.

The mass of 1 molecule of hydrogen (which is a diatomic molecule) is equal approximately to the mass of two protons:

Therefore, the total mass of 1 mole of hydrogen molecules is equal to the mass of 1 molecule times the number of molecules:

Which corresponds to 2 g/mol

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.