Conversion between Grams and Moles in Chemical Reactions

Flashcards to help review key concepts from the lecture on using molar mass for conversions in chemical reactions.

What is the purpose of using moles in chemistry?

Moles relate measurable quantities like grams to the number of molecules in a reaction.

How many grams are in one mole of glucose (C6H12O6)?

180 grams.

What is the molar mass of glucose derived from?

The molar mass of glucose is calculated by adding the molar masses of all its constituent atoms: C, H, and O.

How do you convert grams to moles?

You divide the number of grams by the molar mass of the substance.

What is the molar mass of Br2 (bromine)?

159.8 grams per mole.

In a chemical reaction, why is it important to convert to moles?

Reactions occur based on the number of molecules or moles, not grams.

If you have 32 grams of HCl, how do you determine how many grams of NaOH are needed for a reaction?

Convert 32 grams of HCl to moles, use the mole ratio from the balanced equation, and then convert moles of NaOH to grams.

What is the molar mass of NaOH?

Approximately 40 grams per mole.

When performing conversions between grams and moles, what is essential to ensure accuracy?

Always include the correct units to ensure proper cancellation during calculations.

What is a standard practice when working with molar mass in reactions?

Use the molar mass as a conversion factor to move between grams and moles.