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When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms sodium sulfide and water. How many grams of sodium sulfide are formed if 28.25 g of hydrogen sulfide is bubbled into a solution containing 34.06 g of sodium hydroxide, assuming the limiting reagent is completely consumed?
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell? Make any reasonable assumption that will help you calculate the numbers
the molecular weight of glycine is 75.07gmol and 155.15gmol for histidine. you want to purify each from a solution that
how many moles of glucose, C6H12O6 can be burned when 60.0 mol of O2 is available?
he precipitate was filtered, dried and found to weigh 1.074 g. What is the percentage by mass of barium in the ore. Assume all of the barium is precipitated as BaSO4.
if 10.7 ml of a 0110 m naoh is required to reach the first equivalence point of a solution of citric acid how many ml
the hall process for the production of aluminum involves the reaction of aluminum oxide with elemental carbon to give
Using the van der Waals equation, calculate the pressure of 14.0 g of N2 in a 0.600 L container at 27.0 °C. The van der Waals constants
A piece of titanium metal with unknown mass is heated in boiling water to a temp of 99C. It is removed from the boiling water and dropped into a coffee cup calorimeter containing 83.5g water.
What is the animals inital radiation exposure in curies? b. If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission
Why is it impractical to measure cell potentials of solutions in which the Fe(II)/Fe(III) molality ratio is too small (or large)
to make up a solution of phosphate buffered saline pbs you need 5mm na2hpo4 anhydrous fw 141.96 0.15 m nacl fw 58.44
a sample of nitrogen gas occupies 1.55 l at 27.0c and 1.00atm. what will be the volume be at -100.0 C and the same pressure
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