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aalyn [17]
3 years ago
5

Which of the following indicates that a chemical change has happened during cooking?

Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
6 0
The food darkens because the color is changing in the food.
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Write a balanced chemical equation (smallest integer coefficients possible) for the reaction between an acid and a base that lea
11Alexandr11 [23.1K]

Answer:

2HClO4(aq) + Ca(OH)2(aq) → Ca(ClO4)2(aq) + 2H2O(l)

Perchloric acid + Calcium hydroxide → Calcium perchlorate + Water.

Explanation:

This is a neutralization reaction where the acid, Perchloric acid reacts completely with an appropriate amount of base, aqueous Calcium hydroxide to produce salt, aqueous Calcium perchlorate and water, liquid H2O only.

During this reaction, the hydrogen ion, H+, from the HClO4 is neutralized by the hydroxide ion, OH-, from the Ca(OH)2 to form the water molecule, H2O.

Thus, it is called a neutralization reaction.

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3 years ago
Why is it usually warmer at Earth’s equator than at its poles?
MissTica

Answer:

the equator is closer to the sun

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3 years ago
50 PONITS TO RIGHT AWNSERS!!!
Ivan
Distance and period of time is the correct answer

Hope this helps!
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3 years ago
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A gold nugget has a volume of 20.0 cm3 and its density is 19.3 g/cm3. What is the mass of the gold nugget?
salantis [7]
Density * Volume = Mass

Now we substitute the values in.

19.3 g/cm^3 + 20 cm^3 = 386 g

Mass = 386 g
5 0
4 years ago
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The density (g/ml) of 6 pennies with a mass of 18.53 grams and a volume of 2.0 ml
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Answer: 9.27 g/mL

Explanation:

d=\frac{m}{v}=\frac{18.53}{2.0}=\boxed{9.27 \text{ g/mL}}

3 0
2 years ago
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