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alexandr402 [8]
2 years ago
5

Photosynthesis needs water and carbon dioxide to happen. These 2 ingredients are called _______.

Chemistry
1 answer:
makvit [3.9K]2 years ago
6 0
The answer is C. Reactants
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In which pair is each substance a mixture?
qaws [65]

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Air & Water

Explanation:

Air and water is the common mixtures in the book of the book called "Science & Land"

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2 years ago
Which of the following is the correct formula for Ca2+ reacting with NO2??
mariarad [96]

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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3 years ago
A _____ is a classification of an element based on its current status, position, or use in a document.​
lina2011 [118]
Pseudo-class is the answer
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2 years ago
Compound that contains a terminal carbonyl?
malfutka [58]

Many compunds have a terminal carbonyl

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What is the name of the molecule shown below?
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