10 Questions
What is the mass of 1 mole of diatomic oxygen molecules (O2)?
31.9988 g
What is the molar mass of a single atom of oxygen (O)?
15.9994 g
If 1 mole of ozone (O3) has a mass of 47.9982 g, what is the mass of 4 moles of ozone?
287.9928 g
What is the Avogadro Number (N0) equivalent to?
6.02*10^23 units
Which SI basic unit is mole equivalent to?
Cardinality
What does the statement '1 mole = Avogadro Number (N0)' imply?
For any substance, 1 mole contains exactly 6.02*10^23 particles
What is the molar concentration of a solution that contains 2 moles of solute in a volume of 0.5 dm3?
1 mol/dm3
In a diluted solution of H2SO4, which of the following represents the correct dissociation process according to the Arrhenius model?
H2SO4 $ o$ H+ + HSO4-
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
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?
$Xn1 = \frac{1}{6}$
Test your knowledge on susceptibility to chemicals, polymer plastics sensitivity to temperature, chemical reactions during water purification and wastewater treatment, gaseous products emission, and trace detection in various substances. Explore the basic units and phrases related to chemistry, atoms, molecules, intermolecular bonding, and the physical and chemical nature of bonding.
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