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You are given solutions of HCl and NaOH and must determine their concentrations. You use 30.6 mL of NaOH to titrate 100. mL of HCl and 18.0 mL of NaOH to titrate 50.0 mL of 0.0796 M H2SO4. Find the unknown concentrations.
NaOH -M
HCl -M
A 250.0-L cylinder contains 65.0% He(g) and 35.0% Kr(g) by mass at 25.0° C and 1.35 atm total pressure. What is the partial pressure of He in this container?
A 325 mL sample of solution contains 25.3 grams of CaCl2. Calculate the molar concentration of Cl- in this solution.
Determine the number of moles of O2 produced by the decomposition of 426 g of NaClO3
From there, how would I find the moles of salicylic acid in aspirin sample (mol) and the mass of salicylic acid in aspirin sample (g), which should help me calculate the percent purity of aspirin and the percent yield of aspirin in sample. Thank y..
Calculate the number of moles of HCl in the solution dispensed and its associated error.
How many grams of O2 gas would occupy a 400.0 liter container when the temperature is 300.0 K and the pressure is 2.20 atm?
One mole of an ideal gas is expanded from a volume of 1.00 liter to a volume of 4.90 liters against a constant external pressure of 1.00 atm. How much work (in joules) is performed on the surroundings?
The increase in the rate of reaction with temperature is due to A. increase in the number of effective collisions. B. decrease in activation energy.
Important information about Heat of Reaction, The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) --> 8CO2(g) + 10H2O(l) deltaHrxn= -5314kJ
Explain the effect of that mistake on the calculated molarity MB. (Will the experimental MB calculated by Student A be higher or lower than the true MB value?)
determine the initial concentration - Constant rate is 3.20×10-4 M/s for a zero-order reaction. concentration has dropped to 9.00×10-2 M after 60.0 seconds
An unknown gas having a mass of 2.041 g occupies a volume of 1.15 liters at 0.974 atm and 20 degrees Celcius. Calculate the molar mass of the unknown gas.
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