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The decomposition of Phosphine, PH3(g), to P4 (g) and H2 is first order with rate constant of 1.1 min-1 a) How long will it take to decompose one fifth of the Phosphine? b) What percentage of Phospine is decomposed after 1.25 min? c) How long will it take to decompose one fifth of the phosphine?
Liquid-in-glass thermometer are of two types:mercury in glass and alcohol plus red dye in glass. the dependence of volume on temperature of mercury and alcohol.
how many Liters of water can be made from 34 grams of oxygen gas and 6 grams of hydrogen gas at STP? what is the limiting reactant for this reaction?
Determine the theatrical yield if 1.56 grams of hydrogen is permitted to combines with 9.70 grams of nitrogen producing 1.43 grams of ammonia?
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
Suppose you placed 0.500 mol of COBr2 in a 2.00 liter flask and heated it to 73°C. After equilibrium was reached, suppose you added an additional 2.00 mol of CO to the flask at the same temperature
Methyl red (Ka = 7.9 x 10^-6 is added to a buffered solution of unknown pH. Spectrophotometric measurements show the ratio of the basic to the acidic form of the indicator to be 2.57 to 1.000. Calculate the pH of the buffer solution.
It is desired to inflate a baggie with a volume of 959 milliliters by filling it with hydrogen gas at a pressure of 0.544 atm and a temperature of 284 K. How many grams of H2 gas are needed?
Identifying dipolar ions, There is a question in my textbook that reads P-amino acid is not a dipolar ion, whereas glycine (aminoacetic acid) is not a dipolar ion- how do you account for this?
1.00 mole of pure NOCl and .907 mole of pure Cl2 are placed in a 1.00-L container. Calculate the equilibrium concentration of Cl2(g).
calculate the percent yield of C2H5Cl if the reaction produces 188g of C2H5Cl
Ice cream mix containing 40% total solids is frozen so that half of the original water is made into ice (which is effectively pure water). If the mix contained 12% fat, 16% sugar, and 12% nonfat milk solids
On treatment of Compound D with an alcoholic solution of silver ammonium hydroxide, a silver mirror was formed within a few minutes. Identify the hydrocarbon A and Compounds B-D.
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