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A chemist dissolves 284 mg of pure potassium hydroxide in enough water to make up 140 mL of solution. Calculate the pH of the solution.
The density of citronellal, a mosquito repellant, is 1.45 g · L-1 at 365C and 50.0 kPa. What is the molar mass of citronellal?
Lime, CaO, is produced by reaction CaCO3(s) CaO(s) + CO2(g). What weight of CaO is obtained by the decomposition of 38.7g of CaCO3.
A sample of helium gas has a volume of 241 mL at 0.83 atm. What pressure is needed to reduce the volume at constant temperature to 35 mL.
You are given trhat 0.01 m aqueous solutions of each of the given solution as, C6H12O6, K3PO4, CaCl2 , NaI you jutst need to place the given solutions in order of increasing change in the freezing point of the solution.
one mole of methane has a mass of 16.0 grams. How many grams of methane are needed to make 1.0 L of a 0.20 molar solution?
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
Suppose 5.00g of Ca is added to 50.0mL of 1.00M HCL. Determine the limiting reactant in this case and number of moles of calcium actually consumed.
what is the mole fraction of hydrogen in a gaseous mixture that consists of 8.00 g of hydrogen and 12.00 g of neon in a 3.5 liter container maintained at 35.20 degrees celsius?
You have pure beta-D-glucopyranose of 100 grams nearly, it was dissolved in an ethanol/water combination with the intention to recrystallize the sugar. You get pure beta-D-glucopyranose crystals 60 grams back why this 40% loss was to happen.
How many moles of ammonia are produced when 20 moles of hydrogen react with 40 moles of nitrogen
An aqueous solution is 22.0% by mass silver nitrate, AgNO3, and has a density of 1.22 g/mL. What is the molarity of silver nitrate in the solution?
Consider the mechanism of reduction of WO3. At least two mechamisms are possible to the formation of HxWO3 during intercalation of WO3
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