A 24.0 g sample of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of 3.85 g nh3. what is the percent yield for this reaction given the reaction: n2 (

g. 3h2 (

g. - - > 2nh3 (g

How did the ice ages affect where people settled in America

Which of the following statement (s) is/are TRUE for the citric acid titration? Under-titrating means too little indicator was added to the reaction.

C. Under normal conditions, carbon dioxide gas turns directly into a solid as it is cooled. What could be done to make carbon dioxide form a liquid?

Can anyone tell me 5 things that would happen if we didn't have helium?

Draw 2-methylpentanoic acid. include the hydrogen atoms in your structural formula.

Which of these is produced when fossil fuels are burned? A) oxygen Eliminate B) nitrogen C) hydrogen D) carbon dioxide

Predict the sign of ΔSsys for each of the following processes. Which are positive? (a) Gasoline vapors mix with air in a car engine. (b) Hot air expands. (c) Humidity condenses in cold air.

A system consists of two components, each of which must activate if the system is to activate. One component has a reliability of. 99. The other has a reliability of. 95. The components are independent of one another with respect to reliability.

Which of the following energy level changes for an electron is most energetic? 3 → 2 5 → 2 4 → 2

Is baking soda a element compound homogeneous mixture or heterogeneous mixture?