Chapter 2: Q-2-55AP (page 36)
Silicon nitride (Si3N4) a valuable ceramic is made by the direct combination of silicon and nitrogen at high temperature. How much silicon must react with excess nitrogen to prepare 125gsilicon nitride if the yield of the reaction is 95.0%?
Amount if silicon required from the reaction is 79.3g.
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At 600 K, the rate constant for the first-order decomposition of nitroethane
is 1.9 ร 10-4s-1 . A sample of is heated to 600K, at which point its initial partial pressure is measured to be 0.078 atm. Calculate its partial pressure after 3.0hours.
Aluminum carbide reacts with water to produce gaseous methane . Calculate the mass of methane formed from 63.2g
When ammonia is mixed with hydrogen chloride (HCl) , the white solid ammonium chloride in produced. Suppose 10.0g ammonia is mixed with the same mass of hydrogen chloride. what substance will be present after the reaction has gone to completion and what will these masses be?
Two binary oxides of the element manganese contain, respectively 30.40% and 36.81% oxygen by mass. Calculate empirical formulas of the two oxides.
Question: From the data in Appendix D calculate , , and K, for the following reaction at 298 K:
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