Consider the reaction.
n2(g)+3h2(g) > 2nh3(g)
how many grams of n2 are required to produce 100.0 l of nh3 at stp?

a.6.25 g
b.12.5 g
c.62.5 g
d.125.0 g

The correct answer is option C.

Explanation:

At STP, 1 mol of gas occupies 22.4 L of volume

So, 100.0 L volume of will be occupied by :

According to reaction 2 moles are obtained from 1 mole of .

Then,4.4642 moles of will be obtained from :

that is 2.2321 moles of

Mass of gas:

Moles of gas  Molar mass of gas:

Hence, the correct answer is option C.

3

explanation:

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.