Which of the following chemical formulas represents a total of 12 atoms of oxygen?

Chemistry

2 answers:

user100 [1]3 years ago

7 0

2Fe(No2)3

Explanation:

by multiplying 2×3 we get 6

then 2×6 so we get 12 atoms of o

9966 [12]3 years ago

4 0

Answer:

3Sn(s04)2

Explanation:bc it cant be anything else

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A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. What is the weight/

lara31 [8.8K]

Answer:

A solution is made by dissolving 4.87 g of potassium nitrate in water to a final volume of 86.4 mL solution. The weight/weight % or percent by mass of the solute is :

2.67%

Explanation:

Note : Look at the density of potassium nitrate in water if given in the question.

You are calculating weight /Volume not weight/weight % or percent by mass of the solute

Here the weight/weight % or percent by mass of the solute is asked : So first convert the VOLUME OF SOLUTION into MASS

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