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slavikrds [6]
3 years ago
7

Which of the following chemical reactions will produce a precipitate? *

Chemistry
1 answer:
Zolol [24]3 years ago
8 0

Answer:

A

Explanation:

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H2SO4 is added to a large beaker of water. How is the solution different from the original water?
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Answer is: A) The solution turns blue litmus to red.

Sulfuric acid (H₂SO₄) is a strong acid, it means that the solution of sufuric acid is more acidic (pH<7) than water (pH = 7).

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H₂SO₄(aq) → 2H⁺(aq) + SO₄²⁻(aq).

When solution turns phenolphthalein pink, it means it is basic (pH>7).

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5 0
3 years ago
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What is the difinition of the word democracy?​
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A system of government by the whole population or all the eligible members of a state, typically through elected representatives.
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3 years ago
How many moles of zinc, Zn, are in 1.31×1024 Zn atoms?
liubo4ka [24]

Answer:

=7.89013× 10^47 moles of zinc

Explanation:

1 atom contains 6.023×10^23 moles.

1.31×10^24 atoms of zinc contain6.023×10^24×1.31×10^.24

6 0
2 years ago
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