Stoichiometry and gases, explain]

the following reaction takes place at stp. 4.40 l of nitrogen gas are formed. how many grams of ammonium nitrite decomposed?

2 nh4no2 (aq) > 2 n2 (g) + 4 h2o (l)

The mass of ammonium nitrite decomposed is 12.54 grams.

Explanation:

Pressure of the nitrogen gas = P = 1 atm

Volume of the nitrogen gas = V = 4.40 L

Temperature of the nitrogen gas = T = 273.15 K

Moles of nitrogen gas = n

PV = nRT (ideal gas equation)

According to reaction , 2 mole of nitrogen is obtained from 2 mole of ammonium nitrite.

Then 0.196 moles of nitrogen will  will be obtained from:

ammonium nitrite.

Mass of 0.196 moles of ammonium nitrite:

= 0.196 mol × 64 g/mol = 12.54 g

The mass of ammonium nitrite decomposed is 12.54 grams.

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.