Scientific Notation and The Mole

Converting to Scientific Notation

100

12000000

1.2×10⁷

200

102100000  

1.021×10⁸

300

0.0000105

1.05×10⁻⁵

400

0.000000012

1.2×10⁻⁸

500

83145000000000

8.3145×10¹³

Converting to Standard Notation

100

1.25 x 10⁷

12500000

200

1.21 x 10⁹

1210000000

300

7.33 x 10⁴

73300

400

3.05 x 10^-5

0.0000305

500

5.83 x 10^-3

0.00583

Information from Lesson

100

Scientific Notation is used for numbers that are...

really big or really small

200

If the exponent is positive move to the...

If the exponent is negative move to the...

If the exponent is positive move to the right

If the exponent is negative move to the left

300

n = m / M

What does n, m, and M stand for?

n = Number of Moles

m = Mass (g)

M = Molar Mass (g/mol)

400

What is Avogadro's Constant?

6.02214076 × 10²³ or 6.02 x 10²³

500

True or false: All non-zero digits are significant when determining significant figures

True

Calculations with Moles

100

How many oxygen molecules, O₂ are in a cylinder containing 48.0 g of oxygen?

9.033 × 10²³

200

What is the mass of 2.561 mol of gold?

504.4 g

300

A saline solution contains 0.90 g of sodium chloride, NaCl, dissolved in 100 mL of solution. What is the molar concentration of the solution?

0.15 mol/L

400

Calculate the mass of solute needed to make 250 mL of a 0.50 mol/L solution of NH₄Cl.

6.7 g

500

What is the molar mass of element 27, Cobalt (Co)?

58.933195 u

Questions about Casey :)

100

True or false: I am a dancer

True

Since I was 5 years old

200

True or false: I go to Queen's University

False

I go to Trent University

300

True or false: I hate science

False

Science is awesome!

400

True or false: I have broken my arm twice

False

I have never broken a bone

500

True or false: I think this class is awesome

True

OF COURSE