The ph of a buffered solution (select all that apply):
1 answer:
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Answer: 7.98 grams of are produced if 10.7 grams of
are reacted.
Explanation:
To calculate the number of moles, we use the equation:
.....(1)
Putting values in equation 1, we get:
The chemical equation for the reaction is
By Stoichiometry of the reaction:
2 moles of produce = 1 mole of
So, 0.100 moles of produce=
of
Mass of =
Hence 7.98 grams of are produced if 10.7 grams of
are reacted.
Answer:
9.03 × 10²² oxygen molecules.
Explanation:
We want to determine the number of oxygen molecules in 3.36 L of oxygen gas at STP.
Recall that at STP, for any gas, it has a volume of 22.4 liters per mole.
Additionally, recall that there are 6.02 × 10²³ substances in one mole of a substance.
With the given value, hence multiply:
In conclusion, there are aobut 9.03 × 10²² oxygen molecules in 3.36 L of oxygen as at STP.