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sig figs
math with sig figs
accuracy & precision
unit conversions
matter
100
5
round 4.56 to one sig. fig.
100
47.3
addition: 12.72 34.1 +0.463
100
the closeness of a measurement to the true value of what is being measured
Definition of accuracy
100
6.32x10^8 ML
63200 centiliters ----> microliters
100
occupies space and possesses rest mass, especially as distinct from energy.
what is matter?
200
5
round 5.44 to one sig. fig
200
1400
addition: 900 370 +101.037
200
a quantity used by general agreement of the scientific community.
definition of theoretical value
200
3.6mg
convert 0.0036 g to mg
200
mass, volume, color, density
examples of physical properties:
300
4.6
round 4.56 to two sig. figs.
300
1170
addition: 790. 330 +54.8
300
7%
peter measured the volume of a 2 liter bottle of soda. the actual volume of the soda was 1.86 liters. what is the percent error of the volume of soda?
300
8900ps = 8.9x10^4 ps
convert 8.9x10^-8s to ps
300
flammability, ability to rust, reactivity, toxicity
examples of chemical properties:
400
5.4
round 5.44 to two sig. figs.
400
0.19
multiplication: 34.91 x 0.0053 =
400
describes the closeness, or reproducibility, of a set of measurements taken under the same conditions
definition of precision
400
8.2x10^-9Mpa
convert 8200000mpa to MPa
400
58.44 g
in the complete reaction of 22.99g of sodium with 35.45 g of chlorine. what mass of sodium chloride will be formed?
500
3 sig figs
how many sig figs: 406 g
500
320
Division: 3.102/0.0097 =
500
a quantitative value measured during an experiment
definition of experimental value
500
3260cm3
convert 3.26 dm3 to cm3
500
66.7 g
A 12.2 g sample of X reacts with sample of Y to form 78.9g of XY. What is the mass of Y that reacted?