After 7.9 grams of sodium are dropped into a bathtub full of water how many grams of hydrogen gas are released

The grams of hydrogen gas that are released is 0.343 gram

Explanation:

Given that:

2 Na + 2h₂0 ⇒ 2Na0H +N₂

Molecules of Na = 7.9/2.3 = 0.343 mol Na

Now,

2 molecules  of Na produces one mole h₂

0.343 mol of Na produce  0.343/2 = 0.1717 mol h₂

h2 = molecules * mw (molecular weight)  =0.1717 * 2 =0.343 grams

Therefore the grams of hydrogen gas released is = 0.343 grams

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

hope this you

tobey

c, liquids evaporate, creating a gas