Maths Flashcards
1
Q
G
A
10 to the power of 9
Giga
2
Q
M
A
10 to the power of 6
Mega
3
Q
k
A
10 to the power of 3
Kilo
4
Q
C
A
10 to the power of -2
Centi
5
Q
m
A
10 to the power of -3
Milli
6
Q
Micro (draw the sign)
A
10 to the power of -6
Micro
7
Q
n
A
10 to the power of negative nine
Nano
8
Q
Percentage change formula
A
Change over total multiplied by 100
9
Q
Absolute error definition
A
Difference between true value and the min and max value of measured (always halve between dimension given on instrument ie ruler of mm means 0.5mm + or -)
10
Q
Relative error formula
A
Absolute error divided by measured value multiplied by 100
Ie 0.5/7 = answer x 100=7.1(2SF)%
11
Q
Concentration formula (osmosis practical)
A
V1= (C1xV2)/C2 1= stock solution 2= new solution
