Express the following quantity in scientific notation
686 000 000 mm
What is 6.86 x 10^8?
100
Mass/volume=
What is density?
100
A student estimated a mass to be 250 g , but upon carefully measuring it, found the actual mass to be 240 g. What is the percent error?
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What is 4.17 %?
100
Round this number to 5 significant
234.545 g
What is 234.55 g?
200
5.7 kg=_____g
What is 5700 grams?
200
Express your answer in scientific notation
(5 x 10^5) + (2 x 10^5)=
What is 7 x 10^5?
200
You have a rock with a volume of 15 mL and a mass of 45 g. What is its density?
What is 3 g/mL?
200
An experimental measurement was taken of 10.4 ml and the actual measurement was 9.7 ml. What is the percent error?
What is 7.22 %?
200
Determine the number of significant figures
30, 015 g
What is 5?
300
34.5 mg=_______g
What is 0.0345 grams?
300
Express your answer in scientific notation
(15.6 x 10^6) + (0.165 x 10^ 8) + (1.56 x 10^7)=
What is 5.91 x 10^7?
300
If you have a mineral sample with a volume of 40 ml and a mass of 200 grams, what is the density?
What is 5 g/ml?
300
A student's calculation was found to have a 35.5 % error, and his experimental measurement was 15.6 cm. What are the two possible values for the actual measurement?
What is 11.51 or 24.18 cm?
300
Determine the number of significant figures in each of the following measurement
83.90 m/s
What is 4?
400
2400 mm=______km
What is 0.0024 km?
400
Express your answer in scientific notation
(2 x 10^-4) x (3 x 10^2)=
What is 6 x 10^-2?
400
You decide you want to carry a boulder home from the beach. It has a volume of 7.5 ml. It is made of granite, which has a typical density of 2.8 g/ml. How much will this boulder weigh?
What is 21 g?
400
The actual mass of an unknown metal is 34.5 g. The percent error found to be 18.5 %. What is the experimental value? What are the two possible values?
What is 28.12 g or 40.88 g?
400
Perform the following operation expressing the answer in the correct number of significant figures
895 g / 7g=_______
What is 1 x10^2?
500
11,520 minutes=_______days
What is 8 days?
500
Express your answer in scientific notation
(9 x 10^5) / (3 x 10^-1)=
What is 3 x 10^6?
500
Imagine you have a graduated cylinder filled to the 50 ml mark. Then you add a piece of pyrite which has a mass of 100 g and the water rises to 57 ml. What is the density of the pyrite?
What is 14. 29 g/ml?
500
(Actual value-Experimental value )/Actual value x 100 =