Chemistry, 18.09.2019 04:30 jessejames48
A1.803 g sample of gypsum, a hydrated salt of calcium sulfate, caso4 is heated at a temperature greater than 170 degree celsius in a crucible until a constant mass is reached. the mass of anhydrous caso4 salt is 1.426g. calculate the percent by mass of water in the hydrated calcium sulfate salt.
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Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96
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Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)
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Think about how you can use le chatelier’s principle to find possible solutions to the design problem. describe at least two ways to increase the yield (amount) of ammonia based on this principle.
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At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k
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A1.803 g sample of gypsum, a hydrated salt of calcium sulfate, caso4 is heated at a temperature grea...
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