) A student measured the volume of a sample and reported the value as 48.93 mL, which digit in the measurement is estimated and uncertian? a. 8 b. 4 c. All digits in a measurement are certain d. 9 e. 3 2.) The prefix milli means: A. 10-9 B. 103 C. 10-3 D. 10-6 E. 106 3.) The number 0.23350 has how many significant figures
1.) A student measured the volume of a sample and reported the value as 48.93 mL, which digit in the measurement is estimated and uncertian?
a. 8
b. 4
c. All digits in a measurement are certain
d. 9
e. 3
2.) The prefix milli means:
| A. |
10-9 |
|
| B. |
103 |
|
| C. |
10-3 |
|
| D. |
10-6 |
|
| E. |
106 |
3.) The number 0.23350 has how many significant figures
4.) Express the following number in decimal notation:
4.22 x 10-3
5.)
Place the following values according to increasing number of significant figures (select letter A for the lowest number):
95.000
0.00001
0.45
257
4005
1. Volume measured by the student is 48.93 ml . Thus 4, 8 and 9 are the certain numbers where as some student noticed the volume as 48.92 ml and some other as 48.94 ml. Their average is 48.93 ml
Thus uncertainty digit is 3
Thus correct option is (e)
2. The prefix mili means 10-3 of unit.
as unit
deci
Centi
Mili
and 1 unit = 10 deci = 100 centi = 1000 mili
Then 1 mili = 1/1000 unit = 10-3 unit
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