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The rate constant for a certain reaction is = 4.60×10-3 s^-1. If the initial reactant concentration was 0.900 M , what will the concentration be after 5.00 minutes?
A mass of solid potassium chlorate undergoes thermal decomposition in the presence of a catalyst (manganese dioxide) to produce solid potassium chloride and oxygen gas. As a result, 250mL of oxygen are collected over water at 26.0 degrees C and a ..
Does 4 mL of 5% NaOH contain enough base to completely neutralize 125 mg of benzoic acid. Show your stoichiometry calculations.
accidentally mixed. A 4.50-g sample is burned, and 2.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?
A silver electrode is placed in a saturated solution of AgBr. This half-cell is connected to a standard hydrogen electrode and the voltage is found to be +0.437 V. Calculate Ksp for AgBr.
Assuming the final mixture has a specific heat capacity of 4.18 J/g*degrees celsius, calculate the final temperature. The enthalpy of fusion for ice is 6.02 KJ/mol.
What is a variable which has no effect on the rate of a chemical reaction under any circumstance is
Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to heat 200. mL of coffee from 25°C to 62°C?
What is the euillibrium constant, Keq, for the reaction below if a vessel containing 0.45atm of SO2, 0.05 atm of SO3, and 0.25 of O2 has an equillibrium partial pressure for SO2 of 0.55 atm.
The inside fluid temperature is 223 degrees celsius while the outside fluid temperature is 57 degrees celsius. Calculate the heat lost by the tube per meter of length.
Sodium oxalate, Na2C2O4, in solution is oxidized to CO2 by MnO4- which is reduced to Mn2+. A 50.1 volume of a solution of MnO4- is required to titrate a 0.339 g sample of sodium oxalate.
The student then took 100 ml of the Mg(OH)2 solution and reacted with HCl(aq). If 13.75 ml of .010M HCL reacted with the OH-(aq), what was the concentration of hydroxide ion in the 100ml solution?
a metal object with a mass of 19g is heated to 96 degrees C, then transferred to a calorimeter containing 75 g of water at 18 degrees C. The water and metal object reach a final temperature of 22 degree C.
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