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4 years ago

Why is rain water always somewhat acidic?

2 answers:

8 0

Answer: a. Because the carbon dioxide in the air mixes with it to form carbonic acid and d. Because sulfur dioxide released from burning petroleum mixes with it to form sulfuric acid.

Explanation:

$CO_2+H_2O\rightarrow H_2CO_3$

$SO_2+H_2O\rightarrow H_2SO_3$ , which oxides in air to form $H_2SO_4$

Thus carbonic acid $H_2CO_3$ and sulphuric acid $H_2SO_4$ mixes with rain to form acid rain.

Nitrogen monoxide $NO$ and not nitrous oxide $N_2O$ forms nitric acid.

Olin [163]4 years ago

3 0

A.Because the Carbon dioxide in the air mixes it to form carbonic acid

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PLS HURRY!! what is the net ionic equation of NaCl + CaCl → Na2S + CaCl2

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NaCl+CaCl=Na2S+CaCl2 is an impossible reaction.

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All the following ions have the same charge except Group of answer choices oxide. monohydrogen phosphate. peroxide. permanganate

Triss [41]

All the given species have the same charge except peroxide.

<h3>Charges on ions</h3>

The charge on monohydrogen phosphate is negative because of its formula, $[HPO4]^{2-}$ .

The charge on permanganate is negative. The formula is $MnO^-$

The charge of oxide ( $O^{2-}$ ) is negative.

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The charge on oxalate, $C2O4^{2-}$ , is negative.

Thus, only peroxide is unique.

More on charges on ions can be found here: brainly.com/question/11938054

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2 years ago

what is the molarity of a solution made by dissolving 18.5 grams of NaCL into enough water to reach 450.0ML

ValentinkaMS [17]

Answer:

0.702M

Explanation:

Molarity of a solution, which refers to the molar concentration of that solution can be calculated thus;

Molarity = number of moles (n) ÷ volume (V)

Firstly, we convert 18.5 grams of NaCl to moles using the formula; mole = mass/molar mass

molar mass of NaCl = 23 + 35.5 = 58.5g/mol

mole = 18.5/58.5

mole = 0.32moles

Volume of water (V) = 450mL = 450/1000 = 0.450L

Molarity = n/V

Molarity = 0.32/0.450

Molarity = 0.702M

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3 years ago