In a reaction process a company expected to make 6.8 tonnes of ammonia but the yield of ammonia was
only 4.2 tonnes. Calculate the percentage yield of
ammonia.
1
61.8 %
2
0.6 %
3
16.2%
4
6.2 %

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

Avariable that is not being directly tested during an experiment should be