TI 84 Practice

Front

What is Avogadro's number?

Back

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

Front

How do you calculate the number of moles from molecules?

Back

To calculate moles from molecules, divide the number of molecules by Avogadro's number (6.022 x 10^23).

Front

What is the formula to convert moles to particles?

Back

Number of particles = Number of moles x Avogadro's number (6.022 x 10^23).

Front

If you have 1 mole of a substance, how many particles do you have?

Back

You have 6.022 x 10^23 particles.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10.

Front

How do you multiply numbers in scientific notation?

Back

To multiply, multiply the coefficients and add the exponents of the powers of 10.

Front

How do you divide numbers in scientific notation?

Back

To divide, divide the coefficients and subtract the exponents of the powers of 10.

Front

What is the result of multiplying Avogadro’s number by 5.2 x 10^5?

Back

3.13E29 or 3.13 x 10^29.

Front

How many moles are in 1.20×10^24 molecules of water (H2O)?

Back

1.99 moles.

Front

What is the result of dividing Avogadro's number by 1 x 10^10?

Back

6.022 x 10^13.