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If a formic acid/formate buffer is 0.031 M in formic acid and has a pH of 3.91, what is the molar concentration of the formate ion? The pKa of formic acid is 3.75.
under certain conditions, the combustion of charcoal (C) in the presence of o2 forms carbon monoxide (CO) according to the given balance equation.
A chemist dissolves 128 mg of pure hydrobromic acid in enough water to make up of 110 mL solution. Calculate the pH of the solution.
Complete and balance the equation for this reaction in acidic solution. Phases are optional.
Why do you sweat? Please use all the thermochemical terminologies( endothermic, exothermic, eat transfer, and whatever else is appropriate)
Hydrogen bonds a) play an important role in the solvent properties of water b) are not involved in protein structure c) play a role in the properties of DNA, but not of RNA d) give water a lower boiling point than expected 44
If 0.20g of gas occupies 400 mL at 30 degrees celsius and 700 mm Hg of pressure, what is the molar mass of the gas?
What is the correct method for determining how many moles of calcium oxide are produced in the reaction of 10.g calcium with excess oxygen?
if a 2.5 L of Hydrogen is collected over water at 40C and 767 mmHg, what is the volume of dry gas at standard conditions, The vapor pressure of water is 55.3 mmhg at 40 C
Calculate the density of hydrogen sulfide gas, H2S, at 60.°C and 953 mmHg. Obtain the density in grams per liter.
An automobile gasoline tank holds 21kg of gasoline. When the gasoline burns, 86kg of oxygen is consumed and carbon dioxide and water are produced.
Calculate the amount (in grams) of N-methylmaleimide and 9-(hydroxymethyl)anthracene that are required in a reaction utilizing 0.5mmol 9-(hydroxymethyl)anthracene (208.26 g/mol) and 3 molar equivalents of N-methylmaleimide (111 g/mol)
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 8.00 g of sodium carbonate is mixed with one containing 4.75 g of silver nitrate.
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