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A 10.0-g sample of a mixture of CH4 and C2H4 reacts with oxygen at 25 degrees celcius at 1 atm to produce CO2 and H20. If the reaction produces 520 kJ of heat, what is the mass percentage of CH4 in the mixture?
what minimum number of packages of buns, packages of patties, and jars of pickles do you need, respectively? Express your answer as three integers separated by commas.
A certain reaction with an activation energy of 165 kJ/mol was run at 485 K and again at 505 K. What is the ratio of f at the higher temperature to f at the lower temperature
An additional 31.4 g of water was added to the reaction vessel, and a new state of equilibrium was achieved. What are the equilibrium partial pressures of each gas in the mixture
when metabolized an orange provides 445 kj of energy. what mass of water could this amount of energy raise from 25.0
Titanium tetrachloride, TiCl4, has a melting point of -23.2 C and has a Delta H fusion = 9.37 kJ / mol.
Using the elements sodium, potassium, calcium, magnesium, carbon, oxygen, nitrogen, fluorine, chlorine, iron, hydrogen and sulphur, provide some key features of the periodic table such as: How they are organised in groups, periods and blocks
when the following five solutions are mixed together, only one reaction occurs. write the net ionic equation for that precipitation reaction. KCl(aq),Cu(NO3)(aq),AgNO3(aq),CaCl2(aq),and Ba(No3)2(aq)
what is the partial pressure of carbon dioxide at the end of the reaction. What is the mole fraction of carbon dioxide at the end of the reaction
Given a column of air with a pressure of 1.57 x 10^5 Pa and an area of 1.12 m^2 and given that the acceleration due to gravity is 9.8 m/s^2, what is the mass of this column
The relationship between Kp and Kc for gaseous reactions depends on the change in the total moles of gas between reactants and products. For each of the equations given at the right, select the correct relationship between Kp and Kc from the list ..
When an outside plastic envelope is removed, O2 molecules penetrate the paper causing the reaction to begin. A Typical packet contains 250 grams of iron to warm your hands or feet for up to 4 hours.
According to the above expression how many moles of KHC8H4O4 are needed to neutralize 25.00 mL of 0.10 M NaOH
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