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Elena L [17]
3 years ago
15

Keep your work area neal and

Chemistry
1 answer:
Sindrei [870]3 years ago
8 0
Clean? I’m pretty sure not sure what it means but.
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You leave a piece of bread outside for a few days. It forms green and blue mold. It smells awful. A chemical change has occurred
Fed [463]

False. It is a physical change because the molecules of the bread didn't change only the form of the bread changed.

3 0
3 years ago
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When a hydrochloric acid solution is combined with a potassium hydroxide solution, an acid-base reaction occurs Write a balanced
Svetach [21]

Answer:

HCl(aq) + KOH(aq) ⇒ KCl(aq) + H₂O(l)

Explanation:

Hydrochloric acid is an acid because it releases H⁺ in an aqueous solution.

Potassium hydroxide is a base because it releases OH⁻ in an aqueous solution.

When an acid reacts with a base they form a salt and water. This is a neutralization reaction. The neutralization reaction between hydrochloric acid and potassium hydroxide is:

HCl(aq) + KOH(aq) ⇒ KCl(aq) + H₂O(l)

7 0
3 years ago
The atomic number of potassium is 19. How many electrons does this element have?
Vinvika [58]

Answer:

Potassium is an element that has 19 electrons

7 0
2 years ago
Please help me im so lost! ​
Georgia [21]

Answer:

An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. ... The nucleus of an atom contains protons and neutrons.

Explanation:

i'm smart you are too in your own way.

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Studies done by Thomas Hunt Morgan show that in fruit flies, the gene for eye color must be physically carried on the __________
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On the X chromosome
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