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What is the pH of a solution that is 0.10 M CH3NH2 (methylamine) and 0.15 M methylammonium chloride
The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy in kilocalories kcal would combustion of 0.670oz of methane release.
prepare 10 ml of solution that represents a 4 fold dilution of the stock solution
How many moles of HIO3 are produced when 1.29 grams of ICl3 and 7.81 grams of H2O react
what is the pH of a solution obtained by adding 3.50g of HBr to 435mL of a 0.639M solution of HNO3?
If all four gases had initial concentrations of 0.650 M, calculate the equilibrium concentrations of the gases.
Provide the structure of an aromatic compound with seven carbon atoms. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds)
Using the equation E0cell = E0cathode - E0anode, and the reference value of E0 for Cu(II)/Cu(s) for the role that copper plays in this overall cell reaction, determine the value of the standard potential for the half-reaction Zn2+(aq) + 2e- -> Zn(..
the pressure of a sample of helium in a 1.00-liter container is .988 atm. What is the new pressure if the sample is placed in a 2.00 L container?
Develop an argument based on bond enthalpies for the importance of SiO bonds in substances common in the Earth's crust in preference to SiSi or SiH bonds
Find the temperature at which ethanol boils on a day in the mountains when the barometric pressure is 547 mmHg. (Given: The heat of vaporization of ethanol is 39.3 kJ/mol; the normal boiling point of ethanol is 78.3°C.)
36.45 mL of 0.11 M hydrochloric acid were added to 36.45 mL of 0.098 M aqueous barium hydroxide. Calculate the theoretical yield of the salt produced.
The simplest formula of a substance is found to be CH2O, and its approximate molar mass is found by experiment to be 93 g•mol-1. What is its exact molar mass?
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