Chemistry, 18.03.2021 02:50 edith47

Help please its abt thermal decomposition

3. The following questions are based on thermal decomposition of metal nitrate

a) Tom heated Mg (NO3)2 in a boiling tube. Which gases are given off?

……………………………………………………………………………………… ………

b) Write the balanced chemical equation of thermal decomposition of Mg (NO3)2

……………………………………………………………………………………… ………

c) Consider the following metal nitrates.

Zn (NO3)2 , NaNO3 , Cu (NO3)2 , Pb (NO3)2

Which metal nitrate will decompose easily?

……………………………………………………………………………………… ………

I WILL MARK U BRAINLIEST!

PlZzz HeLp mE!

Answers: 2

Show answers

Answers

Answer from: Quest

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

Answer from: Quest

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form( $n_2$ ) .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

Answer from: Quest

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Answer from: Quest

Answeropposite;