Quantitative Chemistry

Sigfigs

100

Measurable digits in a number.

What are significant digit? What are sigfigs?

200

a number with only 2 sigfigs 

22, 33, 23, any number with two sigfig

300

Number of sigfigs in the number 1.204.

What is 4?

400

Round to 3 sigfigs: 402,325

what is 402,000

500

Round this answer to the appropriate amount of sigfigs: 2.30 x 3.056=

7.03

Scientific notation

100

The format used to express a number as a product of a number and 10 to the power of 10.

What is scientific notation?

200

1,000,000,000 in scientific notation

what is 1x 10⁹?

300

5.2 x 10^-3 in standard notation 

what is 0.0052?

400

 0.000989 in scientific notation

9.89 x 10 ^-4

500

Write 1.02355 x 10³  in standard notation rounded to 3 sigfigs

What is 1020?

The Mole and molar mass

100

6.02 x10²³

What is the mole? What is avagadro's number?

200

The mass of one mole of substance, expressed in grams/mole.

What is molar mass?

300

Molar mass of potassium

What is 39.10 grams?

400

Molar mass of Oxygen

What is 16.00 g/mol?

500

Molar mass of NaCl

What is  58.44 g/mol?

Conversions

100

Number of meters in 1 kilometer

What is 1000?

200

0.075 km = ______m

What is 75m?

300

How many days are in 33 minutes?

0.023 days

400

Number of moles in 2.55 g of Hydrogen.

What is 2.57 moles?

500

Most abundant element in the universe

What is hydrogen?

Molar Conversions

100

How many grams are in 2.00 moles of oxygen?

32.0 g/mol

200

How many atoms are in 2.00 moles of oxygen?

1.20 x 10²⁴ atoms of oxygen

300

How many grams are in 0.0150 moles of Neon?

0.303 grams 

400

How many particles are in 2.05 grams in Lithium?

1.78 x 10²³ particles 

500

How many grams are in 2.2x 10²⁰atoms of Carbon?

0.0044 grams of carbon