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A copper storage tank containing dilute H2SO4 at pH 0.1 is blanketed with hydrogen at 1 atm. Calculate the maximum Cu(2+) contamination os the acid in moles Cu(2+) per liter. What is the corresponding contamination if the hydrogen partial pressure is reduced to 10^-4 atm?
if 69.5 kj of heat is applied to a 1036 g block of metal the temperature of the metal increases by 11.4degc. calculate
solution made from 6.50g of an unknown compound in 27.8g of diphenyl has a molality of .195m. Calculate the molar mass of the unknown.
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate.
The pressure inside a hydrogen-filled container was 2.10 atm at 21 C. What would the pressure be if the container was heated to 94 C?
Solution A is 2.00 L of a 2.00 M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of a 3.00 M aqueous solution of potassium hydroxide. React the two solutions. Determine the concentrations of all ions left in solution (from part a) and..
When the following chemical equation is correctly balanced, what is the sum of the smallest set of integer coefficients
Consider the electronic transition from n = 4 to n = 1 in a hydrogen atom, and select the correct statement below.
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
A 498 mL sample of laughing gas, N2O, is at 30 oC and 414 torr pressure. (a) How many gas molecules are present? (b) How many atoms are there
How many moles of KMnO4 are present in 25.0 mL of a 0.0900 M solution?
A Pb-Sn alloy containing 40 wt% Sn is cooled from the liquid state to room temperature. How much of each phase is present in the material at room temperature. Sketch the expected microstructure.
Solutions with greatest long-wavelength UVA absorption: Name of strongest UVA absorbing ingredient
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