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would the mass of the precipate collected be more, unchanged, or less if the residue was washed with hot distilled, deionized water instead of cold distilled deionized water
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg.
How much water must be added to 534. mL of 0.180 M HCl to produce a 0.135 M solution? (Assume that the volumes are additive.)
Write balanced chemical equation and evaluate the molecular weight of the reactants and Calculate the molecular weights of the reactant.
How many moles of excess base are present? How many additional mL of 0.100 M HCl would be required to neutralize the solution?
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl. how many liters of H2 would be formed at 770 mm Hg and 16 degrees celcius if 26.5g of zinc was allowed to react
how many liters of O2 can be made from 342 g H2O2 if the density of O2 is 1.428 g/L?
In fermentation of glucose, 780 mL of CO2 gas was produced at 37 degrees C and 1.00 atm. What is the volume(L) of the gas when measured at 22 degrees C and 675 mmHg?
A sample of gas occupies a volume of 115mL at a pressure of 720. mmHg. Calculate its volume at STP.
Prepare 1.00L of a pH~12 buffer with a total phosphate concentration of 0.050 M.You have at your disposal the following compounds
What are the protons and neutrons that are emitted from a helium atom called? Atomic mass is expressed in atm.
Find the pH solution & Hydronium ion concentration and What is the pH of a solution of 0.17 M acid and 0.81 M of its conjugate base if the pKa = 8.62?
total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 149 g of solution. The reaction
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