2. Determine the new volume of a gas that begins at 2.3 L and changes
1 answer:
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The given question is incomplete. The complete question is:
A chemist adds 0.85 L of a 0.0050M calcium sulfate to a reaction flask. Calculate the mass in grams of calcium sulfate the chemist has added to the flask. Round your answer to significant digits.
Answer: The mass in grams of calcium sulfate the chemist has added to the flask is 0.58 g
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
where,
n = moles of solute
= volume of solution in L
moles of =
Now put all the given values in the formula of molarity, we get
Therefore, the mass in grams of calcium sulfate the chemist has added to the flask is 0.58 g
Answer: is the limiting reagent and
is the excess reagent.
Explanation:
To calculate the moles :
The balanced chemical reaction is:
According to stoichiometry :
3 moles of require = 1 mole of
Thus 0.960 moles of will require=
of
Thus is the limiting reagent as it limits the formation of product and
is the excess reagent as it is left.