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Tuition Singapore A Level Chemistry Tuition – Redox Question In theory, 3 mol of NH3OH+(aq) is required to convert 1 mol of BrO3–(aq) to Br–(aq). Which one of the following statements about this reaction is correct? A      NH3OH+ is acting as an oxidising agent. B      The change in oxidation number of nitrogen is +4. C     … Continue reading →

Tuition Singapore Math Tuition – Trigonometry Identities Question Solution Please contact Angie @ 96790479 or Mr Ong if you need tuition in Additional Mathematics

Tuition Singapore Maths Tuition – Ratio Question (a)        A sum of money is divided in the ratio 2:4:5. Given that the difference between the largest share and the smallest share is $72, find the sum of money. (b)       Given that A:B = 1/2 : 1/3  and  B is twice of C. How many times is… Continue reading →

Tuition Singapore Physics Tuition – Measurement Definitions A physical quantity consists of a numerical magnitude and a unit. The common base quantities are length, time, mass, temperature, electric current and amount of substance. The SI units of the base quantities are called SI base units. The common prefixes include giga, mega, kilo, deci, centi, milli,… Continue reading →

Tuition Singapore Chemistry Tuition – Kinetics Theory of Particles Definitions The melting point is the temperature at which a solid changes into a liquid. The boiling point is the temperature at which a liquid turns rapidly into a gas. The freezing point is the temperature at which a liquid becomes a solid. Condensation is the… Continue reading →