Question

A chemist adds 170.0mL of a ×3.7510−6/μmolL mercury(I) chloride Hg2Cl2 solution to a reaction flask. Calculate the mass in micrograms of mercury(I) chloride the chemist has added to the flask. Round your answer to 3 significant digits.

Answer #1

A chemist adds 290.0mL of a 2.63/molL sodium chloride NaCl
solution to a reaction flask. Calculate the mass in grams of sodium
chloride the chemist has added to the flask. Be sure your answer
has the correct number of significant digits.

A chemist adds 300.0mL of a 0.166/molL aluminum sulfate Al2SO43
solution to a reaction flask. Calculate the millimoles of aluminum
sulfate the chemist has added to the flask. Round your answer to 3
significant digits.

A chemist adds 305.0 mL of a 0.00641 mmol/L calcium sulfate
solution to a reaction flask. Calculate the mass in milligrams of
calcium sulfate the chemist has added to the flask. Round your
answer to significant digits.

A chemist adds 0.86L of a 9.20/gdL sodium carbonate Na2CO3
solution to a flask.
Calculate the mass in grams of sodium carbonate the chemist has
added to the flask. Round your answer to 2 significant digits.

A chemist adds 120.0 mL of a 7.52M silver(I)
perchlorate to a reaction flask calculate the milimoles of silver
(I) perchlorate the chemist has added to the flask
3 sig figs and final answer in mmol

A chemist adds 280 mL of a 5.86*10^-4 M copper(II) fluoride
solution to a reaction flask... Calculate the mass in MILLIGRAMS of
copper(II) fluoride the chemist added to the flask. ROund to 3 sig
figs..

An analytical chemist weighs out 0.223g of an unknown triprotic
acid into a 250mL volumetric flask and dilutes to the mark with
distilled water. He then titrates this solution with 0.1500M NaOH
solution. When the titration reaches the equivalence point, the
chemist finds he has added 45.5mL of NaOH solution. Calculate the
molar mass of the unknown acid. Be sure your answer has the correct
number of significant digits.

A chemist must prepare
275.mL
of
1.00
M aqueous sodium chloride
NaCl
working solution. He'll do this by pouring out some
4.71molL
aqueous sodium chloride stock solution into a graduated cylinder
and diluting it with distilled water.
Calculate the volume in
mL
of the sodium chloride stock solution that the chemist should
pour out. Round your answer to
3
significant digits.

A
chemist prepares a solution of silver(i) nitrate (AgNO3) by
measuring out 730. μmol of silver(i) nitrate into a 500. mL
volumetric flask and filling the flask to the mark with water.
Calculate the concentration in mmol/L (millimoles, NOT μmol)
of the silver(i) nitrate solution. Round your answer to 3
significant figures.

A chemist prepares a solution of sodium nitrate
(NaNO3) by measuring out 286. umol of sodium nitrate
into a 450. mL volumetric flask and filling the flask to the mark
with water.
Calculate the concentration in mmol/L of the chemist's sodium
nitrate solution. round your answer to 3 significant digits.

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