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Determine the second order rate constant from the initial concentration and half life.
The half life of a second order reaction is 49.5s. If the initial concentration of the reactant A is equal to 0.0400 M, what is the second order rate constant?
When 45.0 g of an unknown nonvolatile nonelectrolyte is dissolved in 500.0 g of water, the resulting solution freezes at -0.930 °C. What is the molar mass of the unknown substance? K f = 1.86 °C/ m for water.
Potassium and sodium chloride are similar in charge and they both have the same anion. When comparing sodium chloride (36 g / 100 mL at 0 oC) and potassium chloride, which has a higher solubility at 0 oC?
A sample of O2 was collected over water at 25C and .865 atm. If the total sample volume was 2.538 L, how many moles of O2 were collected?
Question 1: Nuclear equation a) Write a nuclear equation for the beta decay of thallium-210. b) Plutonium-239, a toxic isotope that cause lung cancer, is an alpha emitter. Write nuclear equation. c) Write the nuclear equ ...
How many moles of carbon dioxide are produced when 19.3 mol of propane gas is burned in excess oxygen? C3H8+5O2=3CO2+4H2O? Please show work.
Calculate the amount of work done for the conversion of 1.00 mole of Ni to Ni(CO)4in the reaction below, at 75oC. Assume that the gases are ideal. The value of R is 8.31 J/molK.
Carbonic acid (H2CO3) is a diprotic acid withKa1 = 4.2×10-7and Ka2 = 4.8×10-11. Theion product for water is Kw = 1.0 × 10-14. What is the carbonate ion concentration[CO2-3] in a 0.037 M carbonic acid solution?
Hello, need help with the following chem questions. Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2Al(s)+3Cl2(g)→2AlCl3(s) You are given 24.0 g of aluminum and 29.0 g of chlori ...
Assuming that air is 21.0 percent oxygen by volume, what volume of air in liters at 45.0 °C and 793 mmHg would be required to burn 185 g of ethanol (C 2 H 5 OH)?
Consider a 0.65 m column with van Deemter parameters A=0.22 mm, B=21.7 mm mL/min, and C=0.018 mm min/mL. If it takes at least 85 theoretical plates to fully separate two solutes, what range of flow rates can be used to s ...
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