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ASHA 777 [7]
3 years ago
10

Ms. Crawford gave the following instructions to her science class:

Chemistry
2 answers:
vekshin13 years ago
8 0
A — a change in state is a good indicator of a chemical change
algol [13]3 years ago
6 0
A- the gas produced caused the balloon to blow up
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Lesechka [4]

Answer:

Sulfuric acid has a higher density than water, which causes the acid formed at the plates during charging to flow downward and collect at the bottom of the battery.

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3 years ago
SOMEONE EXPLAIN THIS TO ME?!?!
labwork [276]

Answer:

Determining the pH of substances such as purple grape juice and catsup using test strips can be difficult. Why?

Explanation:

Due to the tartaric acid present in these substances, this is a weak acid and is the predominant type of acid in grapes.

pH meters for these substances, measure the total acidity of the sample and convert it into tartaric acid concentration; The test strips are a qualitative method of measurement and their result can give different opinions.

7 0
3 years ago
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8.830418848725065

5 0
3 years ago
How many atoms does 2.0 moles of He represent
Rudiy27

We use the following formula to calculate the number of atoms:

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N(He) = 2,0 moles · 6.02·1023 = 12.04·1023 atoms

6 0
3 years ago
What is (2.5x10²)² =
siniylev [52]
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