Scientific Notation and SI Units
Express 1738 in scientific notation
1.738 x 103
At which part of the meniscus are measurements recorded in a graduated cylinder?
The bottom
How many sig figs are in:
a) 0.003
b) 1001
c) 1.850
a) 1 sig fig (leading 0 rule)
b) 4 sig figs (captive 0 rule)
c) 4 sig figs (trailing 0 rule)
Convert 1000 cm to m
10 m
How many g/ml are in a g/cm3?
1, they're equal
Express 1.75 x 10-7 in standard notation.
0.000000175
Refer to Slide 1 in slide deck
~10.8 cm (answer should have digit in tenths place)
Calculate to the correct number of sig figs:
9.798 - 2.55
7.25
71 kg = _______ g?
71000 g
Find the volume of an object that weighs 5.95 g and has a density of 11.752 g/cm3 Report to the correct number of sig figs.
0.506 cm3
Give the metric prefix that corresponds to each of the following:
a) 1,000,000
b) 10-3
c) 10-9
d) 0.000001
a) mega
b) milli
c) nano
d) micro
Refer to Slide 2 in slide deck
~5.65 cm (answer should have digit in hundredths place)
Calculate to the correct number of sig figs:
5.18 x 0.0208
0.108
How many micrograms are in 11.01 nanograms?
0.01101
A graduated cylinder contains 30.0 mL of water. A metal shot is placed in the cylinder, and the water level rises to the 41.4 mL mark. If the object has a mass of 51.5 g, what is its density? Report to the correct number of sig figs.
4.52 g/mL
Which of the following measurements is equal to 645.3 Gs?
a) 6.45 x 10^3 s
b) 6.45 x 10^6 s
c) 6.45 x 10^9 s
d) 6.45 x 10^11 s
e) 6.45 x 10-12 s
d) 6.45 x 10^11 s
Refer to Slide 3 in slide deck
~12 cm (answer should have digit in ones place)
Calculate to the correct number of sig figs:
(7.50 x 1.255) / 0.003
3000 or 3 x 10^3
DAILY DOUBLE!
7.222 x 104 m/s = ________ km/μs?
7.222 x 10-5 km/μs
A block that weighs 412.5g has a length of 17cm, a width of 26cm, and a height of 34cm. What's its density? Report to the correct number of sig figs.
2.7 x 10-2 g/cm3
Which is larger? 5.8cm or 0.58dm
They're equal. Both equal 0.058m.
Refer to Slide 4 in Slide Deck
~28 mL (answer should have digit in ones place)
Calculate to the correct number of sig figs:
[(9.888 / 7.935) x (8.950 x 10^-4)] / 3.2
0.00035 or 3.5 x 10^-4
What is 299 Gg/m3 in g/cm3?
2.99 x 105 g/cm3
A sample of Copper weighs 57.3 Mg and occupies a volume of 23 L. What's its density in g/mL? Report to the correct number of sig figs.
2500 g/mL