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A saturated solution of sodium nitrate contains 80 g NaNO3 per 100 g H2O. How many grams of NaNO3 must be added to a solution containing 25 g NaNO3 in 75 g H2O to make the solution saturated?
If C 6 H 12 O 6 yields C 2 H 5 OH+CO 2 then balance this equation and determine what the percent yield for the reaction is if 575.0 grams of C 6 H 12 O 6 glucose yields 126.4mL of C 2 H 5 OH ethanol?
calculated on the basis of 1g mol pV = zRT so U = H- pV = H-zRT U ?=16,660-0.96/ x 8.314/ x 283/ x /1000=16,658 Is this calculation correct
Calculate the magnitude of the current in amperes if the number of moles of hydrogen gas produced is 5.99×10?4 .
Which group contains elements most likely to form covalently-bonded molecules?
it is given that the mobility of free electrons and holes in pure germanium are 0.38 and 0.18 m2v-s. find the intrinsic
No desiccator is available. The sodium carbonate is cooled to room temperature, but the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid
Potassium hydroxide and phosphoric acid react to form potassium phosphate and water according to the equation. 3KOH(aq)+H3PO4(aq)---->K3PO4(aq)+3H2O(l)
A 0.15 M solution of chloroacetic acid has a pH of 1.86. What is the value of Ka for this acid?
A J tube is filled with air at 22C and 760 Torr. The long arm is closed off at the top and is 100 cm long. The short arm is 40 cm. Mercury is poured into the short arm with a funnel. What is the pressure on the air when Hg starts to spill out.
The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air
Find the pH of the resulting solution when 20.00mL of a 0.1000M triethylamine (CH3CH2)3N (Kb = 5.2x10-4) solution is titrated with 20.05mL of a 0.1000M HCl solution.
Calculate the concentrations of H2SO3, HSO3-, SO32-, H3O+ and OH- in a 0.025M H2SO3. The pH is 1.88 and the Ka1= 1.5 x 10-2 and Ka2 = 6.3 x 10-8.
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