Calculate the molarity of nh3 in the solution
Calculate the molarity of NH3 in the solution if an aqueous solution contains 4.55%NH3 (ammonia) by mass. The density of the aqueous ammonia is 0.979 g/mL.
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Determine the pH of a solution that is 0.210 M in sodium acetate, NaC2H3O2 and 0.120 M in acetic acid , HC2H3O2 The Ka of acetic acid is 1.76 x 10-5.
Assume that the distribution of lifetime of product is unknown, but the populition standard deviation is know to be 9 hours. If 9 products are taken randomly as samples, then sample mean would be 100 hours.
When ammonia is formed using the Haber process in which hydrogen and nitrogen combine. N2(g) + 3H2(g) =>2NH3(g) determine the numbers of grams of nitrogen are required to form the 650 grams of ammonia?
A jogger of 85 kg is heading due east at a speed of 2.2 m/s. A jogger of 55 kg is heading 40° north of east at a speed of 3.8 m/s. Determine the magnitude and direction of the sum of momentum of the two joggers.
53% of men consider themselves professional baseball fans. you randomly select 10 men and ask each if he considers himself a professional baseball fan.
Determine the magnetic field strength which could you get within a 2.9 diameter solenoid wound with the wire as closely spaced as possible?
For five points, express the multinomial coefficient 10M{2,3,5} as a product of binomial coefficients. Hint: the first one is 10C2.
Why is it important to rinse the wet pipet with small portions of the standard oxalic acid solution in the standardization of NaOH solution.
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