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.
Over 22 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
Aspartame (Molecular formula of ) is a sugar substitute in soft drinks. Under certain conditions one mol of aspartame reacts with 2 mol of water to give 1 mol of aspartic acid (molecular formula), 1 mol of methanol (molecular formula ) and 1 mol of phenylalanine. Determine the molecular formula of phenylalanine.
The Celsius temperature of a 4.00-L sample of gas doubles from to at constant pressure. Determine the volume of the gas after this change.
A sample that contains only and Weighs 0.800g. When it is dissolved in excess acid, 0.211g Carbon Dioxide is liberated. What percentage of did the sample contain? Assume all the carbon originally present is converted to carbon dioxide.
Question: The reaction \[{P_4}\left( g \right) \rightleftarrows 2 {P_2}\left( g \right)\] is endothermic and begins to occur at moderate temperatures.
(a)In which direction do you expect deviations to occur from Boyleโs law, (constant T), for gaseous \[{P_4}\]?
(b)In which direction do you expect deviations to occur from Charlesโs law, \[V\alpha T\] (constant P), for gaseous \[{P_4}\]?
Question: Silicaexists in several forms, including quartz (molar volume 22.69 cm3 mol-1) and cristobalite (molar volume 25.74 cm3 mol-1).
(a)Use data from Appendix D to calculate.
(b)Which form is thermodynamically stable at 25ยฐC?
(c)Which form is stable at very high temperatures, provided that melting does not occur first?
What do you think about this solution?
We value your feedback to improve our textbook solutions.
