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3 years ago

1.Which has a larger radius Ca atom or Ca+2 ion?

Chemistry

1 answer:

arsen [322]3 years ago

4 0

Answer:

1.Ca atom has greater radius than Ca+2

2.F- ion has larger radius than F

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Nitrogen has different oxidation states in the following compounds: nitrite ion, nitrous oxide, nitrate ion, ammonia, and nitrog

vitfil [10]

Answer:

C. ammonia, nitrogen gas, nitrous oxide, nitrite, nitrate

Explanation:

To establish the oxidation number of nitrogen in each compound, we know that the sum of the oxidation numbers of the elements is equal to the charge of the species.

Nitrite ion (NO₂⁻)

1 × N + 2 × O = -1

1 × N + 2 × (-2) = -1

N = +3

Nitrous oxide (NO)

1 × N + 1 × O = 0

1 × N + 1 × (-2) = 0

N = +2

Nitrate ion (NO₃⁻)

1 × N + 3 × O = -1

1 × N + 3 × (-2) = -1

N = +5

Ammonia (NH₃)

1 × N + 3 × H = 0

1 × N + 3 × (+1) = 0

N = -3

Nitrogen gas (N₂)

2 × N = 0

N = 0

The order of increasing nitrogen oxidation state is:

C. ammonia, nitrogen gas, nitrous oxide, nitrite, nitrate

7 0

4 years ago

How many significant figures<br> are in this number?<br> 0.00708900

Norma-Jean [14]

Don’t know sorry 1.627

4 0

4 years ago

Read 2 more answers

HELP PLS A chemical reaction between an acid and a base that produces water and a salt is known as neutralization. Which of the

quester [9]

Answer:

4th Option

Explanation:

HNO3 is an acid, KOH is a base and they react to produce KNO3 which is a salt and H2O water.

So this reaction is a neutralisation reaction.

7 0

3 years ago

What is an endothermic reaction?

GrogVix [38]

C is the right answer as endothermic reaction takes in the heat. That is why cooling effect is observed whenever such reaction takes place.
Hope this helped :)

3 0

3 years ago

Carbon tetrachloride can be produced by the following reaction: Suppose 1.20 mol of and 3.60 mol of were placed in a 1.00-L flas

hjlf

The given question is incomplete. The complete question is :

Carbon tetrachloride can be produced by the following reaction:

$CS_2(g)+3Cl_2(g)\rightleftharpoons S_2Cl_2(g)+CCl_4(g)$

Suppose 1.20 mol $CS_2(g)$ of and 3.60 mol of $Cl_2(g)$ were placed in a 1.00-L flask at an unknown temperature. After equilibrium has been achieved, the mixture contains 0.72 mol of $CCl_4$ . Calculate equilibrium constant at the unknown temperature.