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suppose a 5.00 L sample of diatomic oxygen at a given temperature and preesure contains 1.08x10^23 molecules. How many molecules would be contained in 5.00L of hydrogen?
What would the pH change be if this same amount of 1.000 M HCl were put into a gallon of pure water?
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
Calculate the mass of silver chloride in grams required to make 4.4g of silver plating.
What is the H3O+ concentration of the solution?
Sodium will react with oxygen to form sodium oxide. Use the formula below to determine how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction. 4Na + O2 --2Na2O
the rate at which a substance through a semipermeable membrance is determined by the diffusivity D(cm^2/s)of the gas . D varies the membrance temperature
Which of the following cannot act as a Brønsted-Lowry base in an aqueous solution? a) ammonia, NH3 b) acetate ion, CH3CO2-
A quantity of ice at 0°C is added to 66.4 g of water in a glass at 55°C. After the ice melted, the temperature of the water in the glass was 15°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(..
Assume 1.00 mL = 1.00 g What numerical value will be used for the moles on the right hand side of the equation above?
Empirical and Molecular Formula of Cadaverine, Cadaverine, a substance produced by the action of bacteria on meat, contains 58.55% C , 13.81% H , and 27.40% N.
The lethal inhalation dose of sarin for a 200 pound person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
(a)What is the coordination geometry about the vanadium ion incrystals of the alum? Write balanced equations for each reduction step
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