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Levart [38]
3 years ago
9

Read the passage below and choose the best answer for the main idea of the passage:

Chemistry
1 answer:
Crank3 years ago
4 0

Answer: C

Explanation:

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Why is it good to use blue and red litmus for the same solution?
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Under acidic conditions, the solution is red, and under alkaline conditions, the solution is blue. Chemical reactions other than acid-base can also cause a color change to litmus paper. For instance, chlorine gas turns blue litmus paper white – the litmus dye is bleached, because of presence of hypochlorite ions.

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Which of the following reactions is a neutralization reaction? A. ZnCl2(aq) + CaCrO4(aq) → ZnCrO4(s) + CaCl2(aq) B. HNO3(aq) + L
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3 years ago
Wine has a pH of 3, which means it is __________ times more acidic than tomatoes, which have a pH of 4.
Natasha2012 [34]

Answer:

10

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

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3 = - log [H⁺]

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Which of the following statements describes
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Energy is released as heat during the reaction.

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According to newtons third law forces always occur in equal but____ pairs?
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