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4 years ago

Calcium oxide anion meatl or metal

Chemistry

1 answer:

Darina [25.2K]4 years ago

3 0

Answer is ' Metal ' ..

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The bond between which two atoms is most polar?<br>1) C-O<br>2) F-F<br>3) H-0<br>4) N-H

Mashcka [7]

Answer:

3) H-O

Explanation:

because oxygen and hydrogen have very high difference in electronegativity

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4 years ago

Hydrogen and oxygen make up water, which is a covalent compound. Which statement accurately describes hydrogen and oxygen? Hydro

alexdok [17]

hydrogen and oxygen are both nonmetals

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4 years ago

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The reaction you actually perform in this experiment has some complexity in the mechanism (Solomons p904), but you can analyze a

kompoz [17]

Answer:

Explanation:

Attach is the solution

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4 years ago

A sample of an iron ore is dissolved in acid, and the iron is converted to Fe2+. The sample is then titrated with 47.20 mL of 0.

Shalnov [3]

Answer:

33.21% is the right answer.

Explanation:

0.04720 L * 0.02240 mol / L = 1.0573*10-3

mol Fe+2 = 1.0573* 10-3 mol = 5.2864*10-3

mass of Fe= 5.2864 * 10-3 = 0.29522g

% of Fe in sample = 0.29522 g Fe / 0.8890 g of sample * 100 = 33.21%

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3 years ago

Which of the following should have the largest Henry's law constant (kH) in water?

Ostrovityanka [42]

Answer: Option (B) is the correct answer.

Explanation:

It is known that Henry's law is a relation between the concentration of a gas in a liquid (solubility) and the pressure it exerts on the surface of the liquid.

According to Henry's law, the pressure of a gas is directly proportional to the solubility of the gas in a liquid.

Henry's constant is represented by the symbol $K_{H}$ . And, mathematically it is represented as follows.

P = $K_{H}C$

where, P = pressure and C = solubility

As the pressure for the given species is the same. Hence, the standard values of solubility of the given species is as follows.

Gas Solubility

Ar $3.025 \times 10^{-5}$

CO $2.095 \times 10^{-5}$

Xe $10.519 \times 10^{-5}$

$CH_{3}CH_{3}$ $4.556 \times 10^{-5}$

$CO_{2}$ $8.21 \times 10^{-4}$

As, Henry's constant is inversely proportional to the solubility. Hence, more is the value of solubility lesser will be the value of Henry's constant.

Thus, we can conclude that out of the given options CO have the largest Henry's law constant ( $K_{H}$ ) in water.

6 0

4 years ago