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How does temperature affect rate of reaction of an enzyme controlled reaction?

An increase in temperature increases kinetic energy of particles, so collision frequency increases and more enzyme-substrate complexes are formed, therefore rate of reaction increases. The rate of reaction i...
SC
Answered by Suzie C. • Biology tutor
14801 Views

If Angela gets 50p change from a £2 coin, how much is 250g of butter? (full details below)

Angela wants to bake a cake. She needs:250g flour250g sugar3 eggs125g butterEach costs:1kg flour 90p1kg sugar £1.206 eggs £1.15250g butter xShow your working.(0.25 x 0.9) + (0.25 x 1.2) + (0.5 x 1.15) + 0.5x...
NM
Answered by Natalie M. • Maths tutor
3528 Views

Thinking about the periodicity of the period 3 elements, explain the structure of the Sodium and Phosphorus Oxides and the acid-base behaviour of the Oxide solutions.

Electronegativity increases across a period because the atomic radius decreases (i.e. the valence electrons are closer to the nucleus and experience a higher attraction). This is because there are more proto...
NM
Answered by Natalie M. • Chemistry tutor
6358 Views

Explain why a perfectly competitive firm will make normal profit in the long run.

A perfectly competitive market structure possess 4 defining characteristics. 1- Homegenous goods (all goods produced by different suppliers are of same quality and form, eg. Oranges) 2. No barriers to entry ...
JT
Answered by James T. • Economics tutor
7863 Views

State and derive Kepler's third law

Kepler's third law states that the square of the period of any planet is proportional to the cube of its orbital radius.To derive it, two equations are required: F=GMm/r^2 and F = mv^2/r. These are Newtons l...
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Answered by Samuel B. • Physics tutor
4310 Views