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A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.160g of this subunit was dissolved in enough water to produce 2.00 mL of solution. At 28 ? C the osmotic pressure produced by the solution was 0.138 atm . What is the molar mass of the protein(g/mol)?
In the Haber process for the production of ammonia, N2(g) + 3H2(g) ---> 2NH3(g) what is the relationship between the rate of production of ammonia and the rate of consumption of hydrogen?
112 mL of a glucose (C6H12O6) solution is prepared by diluting 8.2 mL of a stock solution of unknown concentration. If the dilute solution contains 0.20 moles of glucose
What mass of methane, CH4, is contained in a 500.-mL sample of CH4 at STP?
During photosynthesis chlorophyll a absorbs light of 440 nm and emits light of 670 nm.
Calculate the empirical and molecular formulae of A and B. Deduce the structural formulae of A and B. State the type isoerism exhibited by A and B.
what is the differences between partial and full method validation? under what circumstances are they being carried out?
how many moles of magnesium oxide are produces by the reaction of 3.82g of magnesium nitride with 7.73g of water? how many grams of excess reactant is left over?
The precipitate was filtered, dried, and weighed. A total of 2.10 g calcium fluoride was collected. What was the percentage of CsF in the original sample?
if 6.73 g of NaCo3 is dissolved in enough water to make 250. mL of solution what is the molarity of the sodium carbonate ?
How do you calculate the rate of change of absorbance per minute over the first 3 minutes to get units, U/ml, total units and percent recovery?
What is an alternative analytical procedure for determining the quanity of water in a non-aqueous sample?
A sample of iron has a mass of 257.0 lb and a volume of 0.523 ft3. What is its specific gravity? and What are the units of specific gravity?
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