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Chemical Reactions and Polymer Sensitivity Quiz

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Questions and Answers

What is the mass of 1 mole of diatomic oxygen molecules (O2)?

31.9988 g (correct)
15.9994 g
62.3786 g
47.9982 g

What is the molar mass of a single atom of oxygen (O)?

15.9994 g (correct)
31.9988 g
47.9982 g
16 g

If 1 mole of ozone (O3) has a mass of 47.9982 g, what is the mass of 4 moles of ozone?

191.9928 g
191.994 g
143.9946 g
287.9928 g (correct)

What is the Avogadro Number (N0) equivalent to?

6.02*10^23 units (B) Signup and view all the answers

Which SI basic unit is mole equivalent to?

Cardinality (A) Signup and view all the answers

What does the statement '1 mole = Avogadro Number (N0)' imply?

For any substance, 1 mole contains exactly 6.02*10^23 particles (A) Signup and view all the answers

What is the molar concentration of a solution that contains 2 moles of solute in a volume of 0.5 dm3?

1 mol/dm3 (C) Signup and view all the answers

In a diluted solution of H2SO4, which of the following represents the correct dissociation process according to the Arrhenius model?

H2SO4 $ o$ H+ + HSO4- (A) Signup and view all the answers

When it comes to water solution, what happens to the ion activity of H2SO4 as the temperature increases from 25°C to 350°C?

It increases initially and then decreases sharply (A) Signup and view all the answers

Which of the following expressions correctly represents the molar fraction (Xni) of a component in a three-phase system when the component comprises 1 mole out of a total of 6 moles?

$Xn1 = \frac{1}{6}$ (B) Signup and view all the answers

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