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You wish to prepare a buffer solution containing NaN3 and HN3 (hydrazoic acid). You have to prepare the solutions first.
a. 187 g of sodium azide is dissolved in water to make a solution with a final volume of 1.0L. What is the concentration and pH of the solution?
b.What is the molarity a solution made by adding 120.0 mL of a 6.0 M HN3(aq) to water to a final volume of 250.0 mL?
c. What volume of the HN3(aq) made in part b is needed to add to 100.0 mL of the NaN3(aq) solution of made in part a to make a buffer at pH= 5.00?
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C
a corrosion technologist pipetted a 100.00 ml hard water sample and titrated it with 37.64 ml of 0.01 m edta solution
If 15.0 mL of 4.5 M NaoH are diluted with water to a volume of 500.0 mL, what is the molarity of the resulting solution? Please include explanation, balanced equation, and calculations.
Dimethyl hydrazine ignites spontaneously upon contact with dinitrogen tetroxide. If 2 mol of dimethyl hydrazine are mixed with 4 mol of dinitrogen tetroxide, and the reaction an 85% yield, how many moles of N2, H2O and CO2 will be produced?
the solubility reaction of interest in this solution? (b) Is a precipitate expected in the solution (Yes, No, or Not Enough Information to Know)?
draw a six-carbon-chain portion from syndiotactic polypropylene in which the groups lie on alternating sides of the
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calculate the pH change when 25 mL HCl are added to 500 mL of a solution that is 0.10 M CH3COO-
How many kilojoules of heat is required to completely covert 70.0 grams of water at 66.0° C to steam at 100°C?
Compute the change in entropy of the universe if water vapor of one mol condenses to liquid water at the temperature of 100°C in a thin flask in an ambient laboratory temperature of twenty five degree celsius.
A weak base B has a dissociation constant Kb = 1.0 X 10-7. For a 0.30 M solution of B in water,
what is the maximum amount of P4S10(444.545 g/mol) which could be formed from 17.12 g of P4 (123.895 g/mol) and 0.137 mol of S8 (256.52 g/mol).
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