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write the net ionic equation for a solution of calcium chloride and a solution of mercury(1) nitrate
A sample of nitrogen gas in a 4.5-L container at a temperature of 27 C exerts a pressure of 4.1 atm. Calculate the number of moles of gas in the sample
45.00g of an ionizable solid with a MW = 54.2g/mol is added to exactly 250ml of water and the solution is found to boil at 102.380C. Another 38.5g is dissolved in 0.100L of water at 200C to produce a solution. By what amount will the freezing poin..
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
What is delta G for the transfer of 6 mol K+from blood plasma to the cellular fluid at body temperature(37C). What is the minimum amount of work that must be used to transfer this K+
what is the global pH change incurred after injection of the HCl? What would the pH change be if this same amount of 1.000 M HCl were put into a gallon of pure water?
If delta H for the reaction is -851.5 kJ/mol at 25'C, calculate the standard free energy change, delta G for the reaction at 25'C. Calculate the temperature at which the reaction changes from spontaneous to non-spontaneous.
What is the balanced equation for the conversion of the fatty acid H3C-(CH2)20-COOH to acetyl CoA and other products?
The radioactive decay of a certain sample produced 936 disintegrations per minute. Exactly 3.00 days later, the rate of decay was found to be 511 disintegrations per minute. Calculate the half-life, in days, for the decay of this sample.
A certain second-order reaction () has a rate constant of 1.80×10-3 at 27 and an initial half-life of 216 . What is the concentration of the reactant after one half-life?
identify the stronger acid in each of the following pairs a)NH4^+ or H3O^+ b)H2SO4 or HCN c)H2O or H2CO3
An oil bath maintained at 50.5 oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
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