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A metal M and a nonmetal X forms a binary compound MX2 of molecular weight 220. When heated with excess oxygen, it is converted to M2O3 and XO2 . What is the equivalent weight of MX2?
What is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass?
Assume that 0.406 mol Carbon (g) is placed in a cylinder that is expanding. The barometric pressure on the outside of the cylinder is constant at 1.00 atm and the temperature is 300.0 K.
Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the following information, calculate H for the overall equation
An open container holds 0.550 kg of ice at - 15.0 degree celsius. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800 J/min for 500 min .
For the reaction shown, calculate how many moles of NO2 form when 5.0 mol N2O5 completely reacts. 2 N2O5(g) 4 NO2(g) + O2(g)
If A length of #8 copper wire radius =1.63 mm has a mass of 24.0 kg as well as a resistance of 2.061 ohm per hm. Explain what is the overall resistance of the wire
Problem- The rate constant of a first-order reaction is 4.60 x 10^-4 at 350 C. if the activation energy is 104 Kj/Mol, calculate the temperature at which its rate constant is 8.80 x10^-4
Given the following pairs, if used in an electrolytic cell which would be the cathode and which would be the anode
It takes 208.4 kJ of energy to remove one mole of electrons from an atom on the surface of rubidium metal. How much energy does it take to take away a single electron from an atom on the surface of solid rubidium
calculate the final pressure, as well as q, w, ?U, and ?H. the gas is expanded isothermally and reversibly until the volume doubles
A woman requires taking ibuprofen twice daily in 625mg amount. Each pill in the bottle is 250 mg then determine the number of pills the woman requires to consume each time she needs 625mg dosage
In 1911, Hans Geiger and Ernest Marsden (working under Ernest Rutherford) conducted an experiment involving alpha particles and gold foil that led to the discovery of the nucleus in atoms.
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