An aqueous solution containing 50% K2CO3 has a density of 1.5404
g/mL.
a) how many grams of K2CO3 are contained in 1 L of solution.
b) Calculate the molarity (mol/L) of the K2CO3 solution
c) Calculate the molarity (mol/kg) of the K2CO3 solution.
You burn 12.3 mL of octane (C8H18, a liquid with a density of
0.703 g/mL and a molar mass of 114.23 g/mol, which is a major
component of gasoline) in a piston. Initial conditions of the
piston:
Initial volume of 1.6 L (ignore the small volume contribution of
liquid octane).
Initial pressure of 1.00 atm (which is also this system’s
ambient pressure).
Initial temperature of 0.00 °C (which is also this system’s
ambient temperature).
Initial content is air, 20.0% O2...
A. How many grams of lithium nitrate, LiNO3 (68.9 g/mol), are
required to prepare 342.6 mL of a 0.783 M LiNO3 solution? B. What
mass of H3PO4 (98.0 g/mol) is present in 36.2 L of a 0.0827 M
solution of H3PO4? C. The formula mass of zinc acetate trihydrate,
Zn(CH3COO)2 • 3H2O, is ? D. A 2.39-g sample of an oxide of chromium
contains 1.48 g of chromium. Calculate the simplest formula for the
compound E. The analysis of an...
How many grams of sodium lactate (MW = 112 g/mol) are required
to prepare 200 ml solution at 1.0 M? Given pKa of lactic acid =
3.86, what is the pH of this solution?
Starting with 6.9 mL of acetic anhydride with a density of
1.082, how many grams of acetylsalicylic acid (theoretical yield)
can be made? Assume acetic anhydride is the limiting reagent and a
one to one stoichiometry. Give two significant digits.
Pure (100%) sulfuric acid has a density of 1.84 g/ml. How many
mL of sulfuric acid need to be diluted with water to a total volume
of 500 mL to prepare a solution with pH=0.500