Sig Figs
How many significant figures does this number have?
32.384
5 significant figures
Write the following number in scientific notation.
62,400,000,000,000
6.24 x 1013
What is the units for molar mass?
g/mol OR grams per mole
How many moles are there in 48.3 grams of Aluminum?
1.79 moles
During a leap year, is there an extra day or one less day?
extra day
How many significant figures does this number have?
5900023
7 significant figures
Write the following number in scientific notation.
0.000000327
3.27 x 10-7
What is the molar mass of Strontium (Sr)?
87.62 g/mol
How many grams is 4.97 moles of HF (hydrofluoric acid)?
99.4 grams
What do you call a baby kangaroo?
Joey
How many significant figures does this number have?
0.003940
4 significant figures
Write the following number in long form.
9.47 x 105
947000
What is the molar mass of LiF ?
25.94 g/mol
How many atoms are there in 1.85 moles of Bromine?
1.11 x 1024 atoms
Who was the 4th president of the US?
James Madison
Answer the following question using correct significant figures.
7.592 x 8.2
62
Answer the following question in correct scientific notation.
2.48 x 106 x 3.96 x 105
9.82 x 1011
What is the molar mass of CaCl2 ?
110.98 g/mol
How many moles are there in 5.91 x 1023 atom of chlorine?
0.981 moles OR 9.81 x 10-1 moles
How many days are there in September?
30 days
Answer the following question using correct significant figures.
7.592 + 8.2
15.8
Answer the following question in correct scientific notation.
5.29 x 109 ÷ 7.32 x 103
7.23 x 105
What is the molar mass of C10H10O6P1N5 ?
327.22 g/mol
If Ms. Reinl asked you at weigh out 3.97 x 1024 atoms of Oxygen, how many grams would you weigh out?
(Hint: you know number of atoms and need to convert to grams)
105.44 grams
For an extra 100 points, how many Grammys does this artist have?
Beyoncé
Extra Point: 28 Grammys