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Final Exam Review Flashcard - Day 3

Final Exam Review Flashcard - Day 3

Assessment

Flashcard

Chemistry

10th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is dimensional analysis?

Back

Dimensional analysis is a mathematical technique used to convert one unit of measurement to another using conversion factors.

2.

FLASHCARD QUESTION

Front

How do you convert grams to atoms?

Back

To convert grams to atoms, use the formula: (mass in grams) / (molar mass) x (Avogadro's number).

3.

FLASHCARD QUESTION

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10^23, which is the number of atoms or molecules in one mole of a substance.

4.

FLASHCARD QUESTION

Front

What is the formula to convert atoms to moles?

Back

Moles = Atoms / Avogadro's number.

5.

FLASHCARD QUESTION

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, typically expressed in grams per mole.

6.

FLASHCARD QUESTION

Front

How many atoms are in 2 moles of calcium (Ca)?

Back

There are 2 x 6.022 x 10^23 = 1.2044 x 10^24 atoms of calcium in 2 moles.

7.

FLASHCARD QUESTION

Front

What is the conversion factor to go from moles to atoms?

Back

The conversion factor is Avogadro's number (6.022 x 10^23 atoms/mole).

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