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Hunter-Best [27]
3 years ago
12

Saltwater _____. has a pH of 10 is mostly used for irrigation and farming can be desalinized and used for drinking is mostly fou

nd in glaciers, ice caps, and aquifers
Chemistry
1 answer:
tiny-mole [99]3 years ago
8 0
I think the best statement to fill the blank is that "can be desalinized and used for drinking". The said statement seems the most appropriate one because the pH of saltwater is not 10 but approximately between 7.6 to 8.4. Also, saltwater is not found in glaciers, ice caps and aquifers instead it is freshwater.
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According to the principle of superposition, which statement is true about the sediment layers shown here?Required to answer. Si
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if layer 4 is at the very bottom it would be c

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For each scenario, determine if the electron has absorbed energy or emitted energy,
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1) emitted energy

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Explanation:

I just got it right

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1. Two hypothetical elements in the periodic table have different characteristics as shown in the following table.
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gas and element and compound

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2 years ago
5)a strip of paper has a length of 14cm what is the lengh of the strip of paper in mm, and in km
I am Lyosha [343]
A) 1 cm ---------- 10 mm
    14 cm ---------- ?

14 x 10 / 1 => 140 mm
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7 0
3 years ago
A solution containing CaCl2 is mixed with a solution of Li2C2O4 to form a solution that is 3.5 × 10-4 M in calcium ion and 2.33
natka813 [3]

This is an incomplete question, here is a complete question.

A solution containing CaCl₂ is mixed with a solution of Li₂C₂O₄ to form a solution that is 3.5 × 10⁻⁴ M in calcium ion and 2.33 × 10⁻⁴ M in oxalate ion. What will happen once these solutions are mixed? Ksp (CaC₂O₄) = 2.3 × 10⁻⁹

A. Nothing will happen since both calcium chloride and lithium oxalate are soluble compounds.

B. Nothing will happen Ksp > Q for all possible precipitants.

C. A precipitate will form as calcium oxalate is not soluble to any extent.

D. A precipitate will form since Q > Ksp for calcium oxalate.

Answer : The correct option is, (D) A precipitate will form since Q > Ksp for calcium oxalate.

Explanation :

Concentration of Ca^{2+} = 3.5\times 10^{-4}M

Concentration of C_2O_4^{2-} = 2.33\times 10^{-4}M

The equilibrium chemical reaction will be:

CaC_2O_4\rightleftharpoons Ca^{2+}+C_2O_4^{2-}

The solubility constant expression for this reaction is:

K_{sp}=[Ca^{2+}][C_2O_4^{2-}]=2.3\times 10^{-9}

Now we have to calculate the ionic product for calcium oxalate.

Q_{sp}=[Ca^{2+}][C_2O_4^{2-}]

Q_{sp}=(3.5\times 10^{-4})\times (2.33\times 10^{-4)

Q_{sp}=8.2\times 10^{-8}

From this we conclude that, Q_{sp}>K_{sp} that means a white solid precipitate of calcium oxalate will be formed when the solutions are mixed.

Hence, the correct option is, (D)

4 0
3 years ago
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