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Oxygen makes up 46.7 % by mass of the Earth's crust. How many grams of oxygen are present if a sample of the Earth's crust has a mass of 335 g
Do all ionic compounds dissolve in water, Do all covalent compounds dissolve in water? answer should be 50 to 100 words.
if 88.6L of H2 measured at STP is allowed to react with 158.3g of P4, what is the limiting reactant?
Calculate the number of carbon atoms in 4.56 grams of ethanol (CH3CH2OH).
A 0.0490 molal aqueous NaBr solution freezes at -0.173°C. What is its apparent percent dissociation in this solution? Kf = 1.86°C/m for water. NaBr -> Na+ + Br-
A compound is heated to produce gas whose molecular mass is to be determined. The gas is collected by displacing water in a water filled flask inverted in a trough of water
Should you install a solar water heater? The average home has a 200 liter hot-water tank, which is effectively drained and replenished three times per day.
Determine What is the final concentration and calculate what is the Ksp of this salt at temperature of 25 degrees Celsius?
How many milliliters of 5.00 M HCl solution are needed to provide the 1.50 moles of HCl needed for a reaction?
Calculate the solubility of BaSO4 in (1) pure water, (2) 0.0125 M BaCl2, and (3) 0.0125 M KCl. What effect do BaCl2 and KCL have on the solubility of BaSO4?
you add 1.65L of water to 112g of sodium acetate. what is the molarity of the sodium acetate in the solution
Cyanogen is a gas which contains 46.2 % C and 53.8 % N by mass. At a temperature of 25oC and a pressure of 750 mmHg, 1.50 g of cyanogen occupies 0.714 L.
A piston has an external pressure of 5.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.540 liters.
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