Question

I am trying to calculate my percent error for an experiment conducted. I need to compare my average density calculated to the accepted average density but I am having trouble doing this because of the conversions.

My average density was 0.12 g/mm^3. The accepted value is for iron which is 7.8 X 10^3 kg/m^3.

So to get 0.12 g to kg I multiplied by 1000 and got 120.

Then I subtracted 120 from 7.80 X 10^3.

Is this correct so far??
You got it backwards:

0.12kg is 120g
0.12g = 0.00012kg

.12g * 1kg/1000g = .00012kg
Oops. Forgot to include the volume:

.12g/mm^3 * 1kg/1000g * 1m^3/(1000mm)^3 = 120000kg/m^3
Oh ok so now to find the percent error do I subtract 120,000 from 7800 and then multiply by 100?
well, if the correct value is 10, and you get 12, then the percent error is (12-10)/10 * 100 = 20%

Yours is figured the same way, but the values are so different, I wonder whether there is something wrong here.
Yes my data is probably wrong I'm just not sure where I messed up

Related Questions

Calculate P({{x}})x P(P({{{x}}})) Find the power set. Calculate the time, calculate the day to listen to the complentry in Japan,calculate when will you w... Calculate P (A or B) in the following scenarios: b. P(A)=0.21, P(B)=0.15, P (A and B)=0.03 P(A or B)... Calculate P (A or B) in the following scenarios: b. P(A)=0.3, P(B)=0.7; A and B are independent P( A... Calculate P (A or B) in the following scenarios: a. P(A)=0.27, P(B) = 0.03; A and B are mutually exc... Calculate P (A or B) in the following scenarios: b. P(A)=0.21, P(B) = 0.15, P(A and B)=0.03 P (A or... Calculate P (A or B) in the following scenarios: c. P(A)=0.69, P(B) = 0.68, P(A and B)=0.58 P (A or... Calculate P (A or B) in the following scenarios: d. P(A)=0.3, P(B) = 0.7; A and B are independent P... calculate the value of this expression 3(2)+ eight fourths+5 Calculate the sum of each of the following arithmetic sequence: 1). 3+8+13+ 2). 20+17+14 3). -...