2.70 feet is the same as how many cm?
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So multiply number of moles x number of atoms/mole = 1.8066 x 10^24 atoms of H2. One mole of any gas at STP has a volume of 22.4 L. So first determine the number of moles of gas you have.
for example do 7
that 's what I think
for example do 7
that 's what I think
<u>Answer:</u> The mass of calcium chloride formed is 15.21 grams.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
- <u>For calcium carbonate:</u>
Given mass of calcium carbonate = 32.0 g
Molar mass of calcium carbonate = 100 g/mol
Putting values in equation 1, we get:
- <u>For hydrochloric acid:</u>
Given mass of hydrochloric acid = 10.0 g
Molar mass of hydrochloric acid = 36.5 g/mol
Putting values in equation 1, we get:
The given chemical equation follows:
By Stoichiometry of the reaction:
2 moles of hydrochloric acid reacts with 1 mole of calcium carbonate
So, 0.274 moles of hydrochloric acid will react with = of calcium carbonate
As, given amount of calcium carbonate is more than the required amount. So, it is considered as an excess reagent.
Thus, hydrochloric acid is considered as a limiting reagent because it limits the formation of product.
By Stoichiometry of the reaction:
2 moles of hydrochloric acid produces 1 mole of calcium chloride.
So, 0.274 moles of hydrochloric acid will produce = of calcium chloride.
Now, calculating the mass of calcium chloride from equation 1, we get:
Molar mass of calcium chloride = 111 g/mol
Moles of calcium chloride = 0.137 moles
Putting values in equation 1, we get:
Hence, the mass of calcium chloride formed is 15.21 grams.