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How many mL of H2O should be added to 30 mL of a four Molarity solution to obtain a solution with a concentration of 0.200 Molarity?
what is the enthalpy change for a reaction where the internal energy change is 58.0 kJ and the volume increase is 12.6 L? (1L * atm = 101.325 J)
the vapor pressure of a liquid at 25c is 200 torr. what will happen when the barometric pressure pbar is lowered to 190
an extended source is spherical in shape with a radius of 2.00 cm and emits 12.57 w from 399.5 to 400.5 nm. determine
A sample of gas with an initial volume of 32.0 L at a pressure of 755 mmHg and a temperature of 325 K is compressed to a volume
Please draw the mechanism for this reaction: Acetic anhydride (C4O3H6) with 2 eqivalents of Dimethylamine (CH3)2HN makes C4NOH9 (one double bond going to Oxygen coming off the 2nd carbon and the 2nd carbon is also attached to the N.
a student placed 10.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
particular coal contains 5.45 by weight of sulfur. how many grams of so2 gas will be produced when 100.0g of the coal
write a 700- to 1050-word paper based on the week one readings on the field of gerontology in which you describe the
Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu. Answer 3.507 amu 1.056 amu 0.079 amu 0.564 amu 0.528 amu
The weight of the product (Hexaphenylbenzene) for this part of the reaction was 2.04 g. What is the percentage yield? What is the overall percent recovery for the three step process?
meteorological balloon contains 375 L of helium at 29°C and 0.928 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 a..
Draw both products of bromination of cholesterol which you obtained. What is the stereochemical relationship between them
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