Practice Mole Concept And Molar Masses (1.8) - SOME BASIC CONCEPTS OF CHEMISTRY

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6 sample questions

Question 1.
Calculate the molar mass of CO2.
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Remember to sum the atomic masses.
Question 2.
Define a mole.
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Think about how we count other items like dozens.
3Question 3.
What is the mole defined as?
- 6.022 x 10²³ particles
- 1 g of a substance
- The mass of an element
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This number is important in counting particles.
4Question 4.
Molar mass is expressed in what unit?
- True
- False
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Think about mass measurements in grams.
Question 5.
If a chemist has 100 grams of sodium chloride, find the number of moles and describe its significance in a chemical reaction.
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Use the molar mass to convert grams into moles.
Question 6.
A sample of carbon dioxide exhibits 44 grams in a reaction. Determine the moles present and the stoichiometric implications for a reaction with another 46 grams of water.
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Recall the ratio of reactants in a balanced equation.

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