49)Solid sodium metal reacts violently with water, producing hydrogen gas (H2) and sodium hydroxide. How many moles of hydrogen gas are formed when 15.3 g of sodium are added to water?

Number of moles of hydrogen gas produced when 15.3 g of sodium reacts with water = 0.333 moles of hydrogen gas

Explanation:

The reaction between sodium metal and water is given by the chemical equation below:

2Na(s) + 2H₂O(l) > 2NaOH(aq) + H₂(g)

From the equation of reaction above, 2 moles of sodium reacts with 1 mole of water to produce 2 moles of sodium hydroxide and 1 mole of hydrogen  gas.

mole ratio of sodium and hydrogen gas is 2:1

molar mass of sodium =23 g/mol:

number of moles of sodium present in 15.3 g = mass/molar mass

number of moles of sodium present in 15.3 g = 15.3 g/ 23 g/mol = 0.665 moles

number of moles of hydrogen gas produced = 0.665 * 1/2 = 0.333 moles

Therefore, number of moles of hydrogen gas produced when 15.3 g of sodium reacts with water is 0.333 moles

i think it's c. i'm not sure but i think so.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.