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vladimir2022 [97]
3 years ago
7

Which of the following is the correct formula for Ca2+ reacting with NO2??

Chemistry
1 answer:
mariarad [96]3 years ago
5 0

Answer:

B. Ca(NO2)2

Explanation:

Ions (charged atoms) combine with one another to form stable ionic compounds. In this case, calicium ion (Ca2+) is said to react with NO2, which has a charge of -1 i.e. +1-1(2) = 1-2 = -1.

This means that calcium has a charge of +2 while nitrite ion has charge of -1, hence, when they combine, they exchange their charges, which become their subscript as follows:

Ca2+ + NO2- → Ca(NO2)2

Ca(NO2)2 is a stable ionic compound called calcium nitrite. Notice that it takes two atoms of NO2- to react with one atom of Ca2+.

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In an investigation with density, Marcia’s teacher measures the mass and volume of 10 different samples of a substance. The samp
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Answer:

Mass  

Step-by-step explanation:

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3 years ago
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Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48g/cm3. A fitting composed of c
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mass = 8.48 x 112.5
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Zinc moles = 352.98 / 65
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3 years ago
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