math skills

Question 1

how to reduce uncertainity

Answer 1

• increase the resolution of instrument used
• the size of increments available
• taking repeated readings

Question 2

uncertainty of a reading (single judgment)

Answer 2

• only one judgemn made so uncertainity is +/- of the smallest scale reading.
  eg. theometre, uncertainity is 0.5 degrees

Question 3

uncertainty of a measurement

Answer 3

2 judgments made as where u start the ruler and where u read from
- ruler
-so uncertainity +/- 1mm if like measured in rule increments
- +/- the smallest divison eg mm

Question 4

serial diution how to get a 100% solutio to a 1% solution

Answer 4

• 100% solution dilute it down
• 1 partsolution, 9 parts water
  then repeat again

Question 5

diltuion series calculation

Answer 5

conc of start solution x vol of stock solution used to make new conc = conc of solution ur making x volume of new solution your making

volume ur making- volue u start with ~+ volume of water ur using to dilute