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How do I complete an essay-style question on time if I'm not a quick writer?

This is something I'm sure everyone's been worried about in the past (myself included!) so you're definitely not alone. When we take a methodical approach and spend a few moments planning our response, it...

Answered by Dante P. • English tutor

1971 Views

What are the three pieces of evidence that disprove the Kekulé model of Benzene?

The enthalpy change of hydrogenation is less exothermic than suggested by the Kekulé model ( -208kJmol^-1 instead of the expected -357kJmol^-1), meaning Benzene is more thermodynamical...

Answered by • Chemistry tutor

6693 Views

Simplify 5p + 2q – 3p – 3q

Firstly, look at the number in front of the letter 'p'. This is 5p and -3p. By ignoring the 'p', as they both have it, do 5-3 which is 2 and so that part of the answer will be 2p. Then look at the letter ...

Answered by Radhika A. • Maths tutor

9045 Views

Matthew gets £100 for his 16th birthday and chooses to invest the money into a bank with a 2% annual interest rate. By which birthday will Matthew have more than £150 in his account?

This a geometric sequence with first term 'a' as 100 and common ratio 'r' of 1.02. 100 x 1.02ⁿ > 150 1.02ⁿ > 150/100 =1.02ⁿ > 1.5 log₁₀(1.02ⁿ

Answered by • Maths tutor

3576 Views

Please can you help me to understand the concept of price elasticity of demand (PED)?

PED is a measure of the responsiveness of demand following a change in the price of a good or service e.g. if the price of good X rose by 20%, PED would measure the extent to which the demand for good X c...

Answered by Tara P. • Economics tutor

3222 Views