When a lithium ion and nitrate ion combine, the result is:

Chemistry

2 answers:

maxonik [38]2 years ago

7 0

LiNO3; nitrate has a charge of -1, and lithium has a charge of +1

solniwko [45]2 years ago

3 0

Answer: Option (a) is the correct answer.

Explanation:

A lithium atom has atomic number 3 and its electronic distribution is 2, 1. Therefore, it easily loses one electron and results in the formation of $Li^{+}$ which is known as lithium ion.

Whereas a nitrate ion has a chemical formula as $NO^{-}_{3}$ .

Since, charge on both lithium and nitrate ion is same in number. Therefore, when both these ions combine together then it results in the formation of $LiNO_{3}$ compound.

Name of this compound is lithium nitrate.

Thus, we can conclude that when a lithium ion and nitrate ion combine, the result is $LiNO_{3}$ .

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If a pharmacist adds 10 ml of purified water to 30 ml of a solution having a specific gravity of 1.30, calculate the specific gr

xxMikexx [17]

The specific gravity of a sample is the ratio of the density of the sample with respect to one standard sample. The standard sample used in specific gravity calculation is water whose density is 1 g/mL. The solution having specific gravity 1.30 is the density of the sample that is 1.30 g/mL. Thus the weight of the 30 mL sample is (30×1.30) = 39 g.

Now the mass of the 10 mL of water is 10 g as density of water is 10 g/mL. Thus after addition the total mass of the solution is (39 + 10) = 49g and the volume is (30 + 10) = 40 mL. Thus the density of the mixture will be $\frac{49}{40}=1.225$ g/mL. Thus the specific gravity of the mixed sample will be 1.225 g/mL.