What is the mass of 22.4 l of n2 at stp? 11.2 grams 14.00 grams 22.4 grams 28.01 grams

Option (d) is the correct answer.

Explanation:

It is known that every 1 mole of ideal gas contains volume of 22.4 liters. As the formula of nitrogen gas is .

Also in one mole, molecule contains two nitrogen atoms.

Hence, mass of 1 mole of nitrogen gas is 2 × molar mass of nitrogen.

Therefore, mass of 1 mole gas = 2 × 14

                                                                            = 28

Thus, we can conclude that mass of 22.4 L of at STP is 28.01 grams.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.