Chemistry, 19.12.2019 02:31 Mathcat444

Find the number of moles of water that can be formed if you have 138 mol of hydrogen gas and 64 mol of oxygen gas.

Answers

Answer from: pstat

Answer : The number of moles of water formed can be, 128 moles

Solution : Given,

Moles of hydrogen gas = 138 moles

Moles of oxygen gas = 64 moles

First we have to calculate the limiting and excess reagent.

The balanced chemical reaction will be,

$2H_2+O_2\rightarrow 2H_2O$

From the balanced reaction we conclude that,

As, 2 moles of hydrogen gas react with 1 mole of oxygen gas

So, 138 moles of hydrogen gas react with $\frac{138}{2}=69$ moles of oxygen gas

But the given moles of oxygen gas is 64 moles.

That means oxygen gas is a limiting reagent and hydrogen gas is an excess reagent.

Now we have to calculate the moles of water.

From the reaction we conclude that,

As, 2 moles of oxygen react to give 1 mole of water

So, 64 moles of oxygen react to give $64\times 2=128$ moles of water

Therefore, the number of moles of water formed can be, 128 moles

Answer from: Quest

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

Answer from: Quest

The reaction will shift to the right

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Find the number of moles of water that can be formed if you have 138 mol of hydrogen gas and 64 mol...