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yulyashka [42]
2 years ago
10

Which of the following compounds is least soluble in water?

Chemistry
1 answer:
hjlf2 years ago
4 0

Answer:

3) iron (iii) hydroxide

Explanation:

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A solution of HNO3 has a [H+] concentration of 0.001 M. What is the pH of point
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A rigid tank that contains 2 kg of N2 at 25°C and 550 kPa is connected to another rigid tank that contains 4 kg of O2 at 25°C an
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Answer:

The volume in the first tank = 0.32 m^{3}

The volume in the second tank = 2.066 m^{3}

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Explanation:

<u>First Tank </u>

Mass = 2 kg

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<u>Second tank</u>

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Pressure = 150 K pa

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From the ideal gas equation

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This is the iso thermal mixing. i.e.

P_{3} V_{3}  = P_{1} V_{1} + P_{2} V_{2} ----- (1)

V_{3}  = V_{1}  + V_{2}

V_{3}  = 0.32 + 2.066

V_{3}  = 2.386 \ m^{3}

Put this value in equation (1)

P_{3} × 2.386 =  550 × 0.32 + 150 × 2.066

P_{3} = 203.64 K pa

Therefore the  final pressure of the mixture = 203.64 K pa

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Covalent bond forms between the oxygen and hydrogen atoms.

(I attached a picture that could help)

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7 0
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