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Compare the rates of effusion for oxygen molecules as compared to hydroge molecules. which will effuse faster, and by how much?
Calculate the pH and the concentrations of all species present in a 0.19-M solution. The acid dissociation constants are K1 = 5.9 10-2 and K2 = 6.4 10-5.
A 9.20-L container holds a mixture of two gases at 47 °C. The partial pressures of gas A and gas B, respectively, are 0.315 atm and 0.803 atm. If 0.180 mol of a third gas is added with no change in volume or temperature, what will the total pr..
A reaction has a theoretical yield of 8.83 g of ammonia. the reaction gives off 10.24 L of ammonia measure at 52*C and 105.3kPa what was the percent yield of the reaction?
1-Complete the following reaction: Pb-210 decays by emission to form what new necleus? Write the complete nuclear equation.
why does the addition of EDTA terminate a reaction in which a restriction enzyme cleaves DNA
What is the mass percent of Ca in the alloy. The unbalanced equations are given below. (Hint: Let x = mass of Ca in the alloy in grams
Explain the Reaction, If you treat an aldehyde wiith HCN you produce a cyanohydrin. For example
Synthesis of Dibenzalacetone from Bezaldehyde and Acetone, Reacting Benzaldehyde with acetone to yield Dibenzalacetone.
the pH at the equivalence point. the pH after adding 6.0 mL of acid beyond the equivalence point
How many moles of oxygen are consumed in burning 1.60 moles of benzene, C6H6?
A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of 1.0 M NaH2PO4. How many moles of HCl must be added to this buffer solution to change the pH by 0.18 units
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.60g of sodium carbonate is mixed with one containing 5.14 of silver nitrate.
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