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A solution made by dissolving 28 mg of insulin in 5.5 mL of water has an osmotic pressure of 15.5 mmHg at 25C. Calculate the molar mass of insulin. (Assume that there is no change in volume when the insulin is added to the water.)
10.0 L gas cylinder is filled with 5.20 moles of gas. The tank is stored at 1 C. What is the pressure in the tank?
Calculate the theoretical yield of C_2H_5Cl when 127 g of C_2H_6 reacts with 250 g of Cl_2, assuming that C_2H_6 and Cl_2 react only to form C_2H_5Cl and HCl.
Write the reaction of benzoic acid with propylamine. If there is no reaction
aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. if 927 ml of hydrogen gas is
How many grams of ethylene glycol C2H6O2 must be added to 1.15kg of water to produce a solution that freezes at -3.68 degrees celsius?
hydrogen and nitrogen react to form ammonia nh3. write the balanced equation and determine how many moles of nitrogen
A magnesium goes from its grond state to its first electronically excited state. I assume the ground state is a singlet.
Hydrolysis of an ester using sodium hydroxide (2M) is usually a fast reaction. Why would it take almost 40 minutes to complete? It is imperative to consider the location of each reagent within the vial.
The vapor pressure of ethanol is 10. torr at -2.3 degrees celsius and 40. torr at 19 degrees celsius.
What is the synthesis for the following compunds from simple organic precursors? Make sure the starting sturcutre is a simple organic precursor
Calculate the number of grams of H2 formed If the wet Hydrogen gas formed occupies a volume of 9.67 Litres
What is the molar mass of a gas if 0.250 g of the gas occupies 215 mL at 618 mmHg and 30.0°C?
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