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Rufina [12.5K]
3 years ago
6

A material found in air, water, or soil that is harmful to humans or other organisms

Chemistry
1 answer:
UNO [17]3 years ago
3 0
The answer is pollutant
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Answer: All of the parts of a series circuit-power source, wires, and devices-are connected along the same pathway​,  All of the parts of a series circuit-power source, wires, and devices-are connected along the same pathway.​ These two are correct.

Explanation:

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2 years ago
Which statement best describes the pH of pure water? It is neutral because the concentration of hydronium ions equals that of hy
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The pH of pure water has been best described as neutral pH with equal hydronium and hydroxide ions. Thus, option A is correct.

pH has been described as the measurement of hydrogen ions in a solution. The pH has been measured on a scale of 1-14. pH 7 has been the neutral pH.

The higher hydronium ion concentration tends to move the pH from 7 towards 1. The higher hydroxide ion concentration tends to move the pH above 7.

The neutral pH has been neither acidic nor basic with the equal constituents of hydronium and hydroxide ion in the solution.

Thus, the pH of pure water has been 7. It has neutral pH with equal hydronium and hydroxide ions. Thus, option A is correct.

For more information about the pH of the solution, refer to the link:

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4 0
2 years ago
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Which of the following combustion reactions is balanced correctly? A. C4H6 + 5.5O2 4CO2 + 3H2O B. C4H6 + 4O2 4CO2 + 3H2O C. C4H6
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You must verify that the number of atoms of each type is equal on both sides of the chemical equation: same number of C, same number of H and same number of O on both sides.

<span>A. C4H6 + 5.5O2 ---> 4CO2 + 3H2O

element      reactant side      product side

C                4                        4
H                6                        3*2 = 6
O                5.5 * 2 = 11        4*2 + 3 = 11

Then, this equation is balanced.

</span>Do the same with the other equations if you want to verify that they are not balanced.

Answer: option A.
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3 years ago
Select the most likely product for this reaction:
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Answer:

A

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just took it on EDG 2020

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A student drops some metal paper clips in a box of sand. The student uses a magnet to separate the metal paper clips from the sa
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Answer:

compound

Explanation:

because now there are one together

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