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A gaseous mixture of O2 and N2 contains 38.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 405 mmHg?
Glycine is the simplest of the amino acids. Treat the amine and carboxylic acid groups as functional groups as independent functional groups.
how many grams of CaCl2 are needed to make 638.2 grams of a solution that is 28.5% (m/m) calcium chloride in water
How much heat is released to the surroundings when 1.5 moles of water cools from 150 to 20 at 1 atm? Note that the constant pressure heat capacities, , for water in vapor and liquid form are 36.4 and 75.3 respectively.
portion of that solution is diluted by adding 165 mL of water. What is the final concentration? Assume the volumes are additive.
0.10 gram sample of a gas occupies 47 ml of vol at 25 deg C and 755 mm Hg. What's the FW of the compound?
What stretches (presence and absence) will distinguish the product (cyclohexene) from the starting material (cyclohexanol)? Give the functional group and wavenumbers
This flask is then connected to a second flask, which is evacuated and has a volume of 630. mL. The gas is subsequently allowed to fill both flasks. What is the final pressure of the gas in the first flask? What is the final pressure of the gas in..
The decomposition of dimethyl ether (CH3OCH3) to methane, carbon monoxide, and hydrogen gases is found to be first-order.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.240 M HClO(aq) with 0.240 M KOH(aq). The ionization constant for HClO can be found here (4.0×10-8).
What is the concentration for each substance at equilibrium for the following gaseous reaction if the initial concentration of ethene,
In which compound does sulfur have the highest oxidation number a)Na2S2O3 b)NaHS c)H2S d)KHSO3 e) CuSO4
constitutionally isomeric ketones that have the molecular formula C4H8O2
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