Numeracy

Question 1

What is a logarithm

Answer 1

A logarithm is the power to which a number must be raised in order to get some other number For example, the base ten logarithm of 100 is 2, because ten raised to the power of two is 100: log 100 = 2. Log10 often used with wide range of numbers allows for plotting on linear scale

Question 2

Semi-log scale

Answer 2

Allows for plotting of wide range of values without have to transform log10
Logarithmic scale on axis

Question 3

What is avogardos number

Answer 3

6.02214 x 1023
Represents number of atom ,particles or molecules in 1 mole

Question 4

Molarity- prepping molecular solutions, equation

Answer 4

Qn = MW x C
MW- molecular weight (number of grams per mole)
C- concentration (moles/L or M)
V- volume of solution that need to be preprepared (L)
Qn- quantity needed (grams)

Question 5

What is mean

Answer 5

Mean =sum of all values/ number of values

Question 6

International system of units

Answer 6

Quantity
LENGTH

Question 7

Molarity how to dilute solutions

Answer 7

Initial concentration x initial volume = final concentration x final volume
Ci x vi = cf x vf

Question 8

Electric current

Answer 8

Electric current is the rate of flow of charge from one point to another – it is measured in amperes (A) and represented by I
The potential difference (or voltage) between two points A and B represents the work done moving a unit of charge from A to B – it is measured in volts (V this is equal to J C-1) and represented by V
A resistance that opposes flow of charge is measured in ohms represented by R

Question 9

Ohms law

Answer 9

V = i x R

Question 10

Cardiovascular measurements

Answer 10

Cardiac output = heart rate x stroke volume