i am a good guy

Essay by frank13579Elementary School, 1st gradeD-, October 2014

Keywords

Station 1

Station 1 Part 1 (10ml Graduated Cylinder)

 Trial 1 Trial 2 Trial 3 Total mass 60.61g 60.85 60.5 Mass of 100ml Beaker 52.26 52.27 52.10 0.01g Volume 9.80 10.00 9.90
 Trial 1 Trial 2 Trial 3 Total mass 60.25g 61.06 60.17 Mass of 100ml Beaker 50.07 50.13 51.00 0.01g Volume 10.0 10.1 10.0

Sample Calculation of Trial one with the 50ml graduated cylin

Trial 1:

Gross Mass: 60.35 Beaker Mass: 50.07

Difference between mass: total mass- Beaker Mass = difference between mass

60.2552.07

= (60.35g-52.07g)(0.01g+0.01g)

=10.18

10.18

Volume: 10.180.5ml=10.00.51% ml

Density = difference between Mass/Volume

= (10.18/10.0)

=1.0185.2%

=1.02 (g/ml)

Sample Calculation for Percentage Error:

The density of water is 1g/ml

Density= Mass/Volume

Actual Result: 0.842ÃÂ±0.006(g/ml)

The formula for calculating percentage error is (your result- accepted result)/accepted result.

(1-0.847)/1*100%=15.3%

 Trial1 Trial 2 Trial3 Observation #1 0.852 0.858 0.854 Observation #2 1.02 1.08 0.917

Percentage Error:

 Trial1 Trial 2 Trial3 Observation #1 14.8% 14.2% 14.6% Observation #2 2% 8% 8.3%

Station 2

 Trial 1 Trial 2 Trial 3 Total mass (with Beaker) 60.35ÃÂ±0.01_g 61.09ÃÂ±0.01g _ 60.35ÃÂ±0.01g Mass initial (dry 100mlbeaker) 52.26 ÃÂ± _0.01g_ 52.27ÃÂ± _0.01g 52.10ÃÂ±0.01g Volume 9.80ÃÂ± _0.05ml_ 10.00ÃÂ±0.05ml 9.90ÃÂ±0.05ml
 Trial 1 Trial 2 Trial 3 Total Mass 63.26ÃÂ±0.01 61.25ÃÂ±001 60.24ÃÂ±0.01 Mass initial 52.20ÃÂ±0.01 52.07ÃÂ±0.01 51.90ÃÂ±0.01 Volume 10ml 10ml 10ml

Sample Calculation:

Volumetric Pipette Trial 1

Density Calculation:

Mass -Mass Initial = Net mass of water

63.26ÃÂ±0.01g -52.20ÃÂ±0.01g

=(63.26-52.20)ÃÂ±(_0.01_+_0.01)_ _

=11.06ÃÂ± _0.02_g

mass of water / volume of water = density of water

11.06g / 10ml= 1 g/ml

Liquid Density = 1g/ml

Percentage Error Calculation:

(Real Value-Ideal Value)/Idea Value

(1-1)/1=0

 Density Trial 1 Trial 2 Trial 3 Observation 1 0.832ÃÂ±0.006g/ml_ 0.882ÃÂ±0.006g/ml _ 0.882ÃÂ±0.006g/ml _ Observation 2 1g/ml 1g/ml 1g/ml

Station 3

 50ml ethanol 100ml water Mass final 40.99 41.20 41,14 59.16 59.21 59.24 Mass initial...