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A 2.18-L flask is filled with propane gas (C3H8), at 1.00 atm and -16.0°C. What is the mass of the propane in the flask?
If 3.8 kcal of energy is released when 1 gram of glucose is combusted, calculate how many kcals are released when 0.689 moles of glucose are combusted
calculate the equivanent weight of the acid. (B) How many moles of protons were titrated? (C) How many moles of H3PO4 were titrated? (D) How many grams of H3PO4 were titrated?
The average radius of a molecule of lyzosome, an enzyme in tears, is 1430 pm. What is it's radius in nanometers.
You need 70.2J to raise the temperature of 34.0 g of ammonia, NH3 (g), from 23.0C to 24.0C. Calculate the specific heat of ammonia.
determine the equilibrium ph of aqueous solutions of the following strong acids or bases: a)15mg/l of hso4- b)10 mM NaOH c)2500 mg/l of HNO3.
What is the molecular formula?
What amount of Potassium Chloride forms when 5.25 litres of Chloride gas at 0.95 atm and 293 K reacts with17.0 g of Potassium
A chemistry lab experiment requires 36.3 g of silver nitrate. How many grams of a 12.5% by mass solution of silver nitrate should be used?
How many milliliters of an aqueous solution of 0.180 M manganese(II) bromide is needed to obtain 12.8 grams of the salt ?
A solution is prepared by dissolving 159 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
A student titrated 20.0 mL of 0.410M HCL with 0.320M NaOH. Find the pH, [H3O+], and [OH-] when 21.50mL of titrant has been added.
When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. The partial pressure of O2 is ?
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