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What mass of Ag2CO3(s) in grams is theoretically produced by mixing 125 mL of 0.315 M Na2CO3(aq) and 75.0 mL of 0.155 M AgNO3(aq)?.
How much energy (in kilojoules) is required to convert 285 ml of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
The atomic mass of element X is 22.99 amu. A 19.98-g sample of X combines with 16.51 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
Calculate ΔH and ΔStotal when two iron blocks each with mass of 1.00kg, one at 25'C and one at 250'C are placed in contact with each other in an isolated container.
How much CH4, in grams, is needed to produce 50.0 grams of CHCl3?
A solution of ethanol (C2H5OH) in water is prepared by dissolving 63.5 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
A patient needs 2.40×10-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
a beaker containing 250g of water is heated from 23 degrees C to 100 degrees C. what is the heat gain in calories?
An unknown compound has the formula CxHyOz. You burn 0.220 g of the compound and isolate 0.312 g of CO2 and 0.191 g of H2O.
In an experiment 1.65g of lead(ii) nitrate react with .327g of zinc. What is the mole relationship between the lead nitrate and the zinc.
Designing and preparing aqueous buffer solution with the pH indicated.
Consider an area-source box model for air pollution above a peninsula of land. the length of the box is 15 km, its width is 80 km, and a radiation inversion restricts mixing to 15 m.
How many grams of solute are required to make a 147 mL solution of sodium hydroxide with a concentration of 0.5330 M.
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