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Questions and Answers
What is the unit of moles for pure solids, liquids, and gases?
What is the unit of moles for pure solids, liquids, and gases?
- Moles (correct)
- Liters
- Grams
- Meters
How is the molar mass (Mr) of a compound calculated?
How is the molar mass (Mr) of a compound calculated?
- By multiplying the atomic masses of each element in the compound
- By dividing the molecular weight by the number of atoms
- By adding up the mass numbers of each element (correct)
- By subtracting the mass numbers of each element
How many grams make 1 kilogram?
How many grams make 1 kilogram?
- 750 grams
- 1000 grams (correct)
- 500 grams
- 2000 grams
What is Avogadro's constant used for?
What is Avogadro's constant used for?
In density calculations, what units are usually used?
In density calculations, what units are usually used?
What is the significance of Avogadro's constant?
What is the significance of Avogadro's constant?
What is Avogadro's Number?
What is Avogadro's Number?
What is the definition of relative atomic mass?
What is the definition of relative atomic mass?
In chemical calculations at A-level, what is the unit of pressure (P) used in the gas equation PV = nRT?
In chemical calculations at A-level, what is the unit of pressure (P) used in the gas equation PV = nRT?
Which equation is used for converting moles to mass?
Which equation is used for converting moles to mass?
What is the value of the gas constant R in most calculations?
What is the value of the gas constant R in most calculations?
When converting temperature from degrees Celsius to Kelvin, what value should be added?
When converting temperature from degrees Celsius to Kelvin, what value should be added?
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