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Determine the molarity of a salt solution of 150g of NaCl in 540g of water. Assume the density of water is 1.0g/mL. (MWNaCl = 58.44 g/mol)
What is the theoretical mass of xenon tetrafluoride that should form when 130 g of xenon is reacted with 100 g of F2? What is the percent yield if only 145 g of XeF4 is actually isolated?
What is the molecular formula of a compound given the molar mass of the compound is 186.5 g and the empirical formula is C2H7
Calculate the concentration of NO3- ion remaining in solution.
Calculate the pH of a solution resulting from the titration of 50mL of 0.033M HBr with 25 mL of 0.117M KOH. Give your answer to two decimal places.
A chemical engineer studying the properties of fuels placed 1.500 g of a hydrocarbon in the bomb of a calorimeter and filled it with O2 gas. The bomb was immersed in 2.500 L of water and the reaction initiated.
What volume of 0.200M Hydrochloric acid must combined to 250mL of 0.300M C8H7NaO3 to produce a buffer of solution with a pH of 3.37?
What proposal did Pauling make to estimate the ratio of the radii of certain anion-cation pairs
How many mmols of Tris would you need to prepare 100 mL of a 100 mM Tris solution
When a 9.92-g sample of gaseous hydrogen bromide dissolves in 45.5 g of water in a coffee-cup calorimeter the temperature rises from 25.00 oC to 69.79 oC. Calculate H in kJ per mol of HBr for the solution process.
A mixture of 0.100 mol of CO2, 0.050 mol of H2, and 0.100 mol of H2O is placed in a 1.00 L vessel and reacts according to the reaction shown below.
When extracting caffeine from tea why do you have to use cold NaOH and water vs. room temperature
Work out the solubility of copper(II)sulfide. Take it that 1 litre of the mixture weighs 1 kg. (in g/100g), CuS (s) Cu^2+ (aq) + S^2- (aq)
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