£22.50 per hour
I am a member of the Teach First program. You may have seen some of my collegues on the BBC 3 Documentary "Tough Young Teachers". As a result of this experience, I am a qualified teacher with two years experience of teaching GCSE Science.
I have a 100% pass success rate at GCSE foundation level in Science A and Additional Science. I have a 100% A/A* success rate at higher level GCSE in Further Additional Science.
I am looking to tutor students in GCSE Science, Chemistry, Biology or Physics. I also have the ability to tutor AS/A-Level Chemistry.
If you are looking to improve your exam technique, have past papers marked, get hints and tips on what the examiners are looking for or are looking to boost your grade... I am your man!
Hope to hear from you soon,
GCSEs: 10A* and 2A grades. A-Levels: Chemistry A Biology A Physics A Maths A
BSc (Hons) Natural Sciences (Chemistry) - Durham University PGCE (Teach First with QTS) - Sheffield Hallam University
4.00g of lawn sand (a mixture of sand and ammonium sulphate) was weighed into a conical flask, and 25 cm3 of 2.0 mol dm-3 sodium hydroxide solution was pipetted into the same flask. The conical flask was boiled for 20 minutes, after which time all the ammonia had been driven off, because: (NH4) 2SO4 (s) + 2NaOH (aq) 2NH3 (g) + Na2SO4 (aq) + 2H2O (1) The residue in the flask was cooled and filtered to remove the sand. The filtrate containing unreacted NaOH was made up to 250 cm3 in a volumetric flask. 25 cm3 samples of this solution were titrated against 0.1 mol dm-3 hydrochloric acid using bromothymol blue as an indicator. HCl + NaOH NaCl + H2O The mean titre was 20.0 cm3. Calculate the percentage of ammonium sulphate by mass in the lawn sand.