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Brian Giles

Questions (22)

Explain the nature of the image formed in a plane mirror.
1. 1 answer
2. 225 views
Explain the effects of old age and disease on movement.
1. 1 answer
2. 225 views
Explain how bones repair when fractured
1. 1 answer
2. 182 views
Explain how bones grow and develop and suggest how training as a gymnast can affect bones whilst physically training and living
1. 1 answer
2. 179 views
What is the structure and function of smooth muscle?
1. 1 answer
2. 242 views
Use the sliding muscle filament theory to explain the molecular mechanisms behind muscle contraction in these types of muscles
1. 1 answer
2. 237 views
Explain the structure of striated (skeletal muscle) and compare the muscle structure in areas of the body that move frequently
1. 17 answers
2. 334 views
Explain the class of lever system in use when the athlete moves from standing onto her toes. Explain why this gives the athlete
1. 1 answer
2. 214 views
You have been asked to calculate the enthalpy change in the followingreaction: 2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) The
1. 1 answer
2. 302 views
Use Le Chatelier’s principle to explain what would happen if you increased the concentration of Nitrogen at the start of the
1. 1 answer
2. 145 views
Use Le Chatelier’s principle to explain what would happen if you increased the pressure of the Haber process reaction.
1. 1 answer
2. 174 views
The chemical reaction which occurs during the Haber process is:Nitrogen + Hydrogen Ammonia N2(g) + 3H2(g) 2NH3(g) Use Le
1. 1 answer
2. 200 views
Explain Le Chatelier’s principle
1. 1 answer
2. 198 views
For the following reactions, determine the equilibrium constant equation. Youmust show your workings within your submission. 1)
1. 1 answer
2. 218 views
Through experimentation, you note that at high temperatures ethyl chlorideproduces HCl and ethylene by the following reaction:
1. 1 answer
2. 387 views
After experimentation you have determined the following rate equations:1. Rate = k[H2] [NO]2 2. Rate = k[H2] 2 [O2] 3. Rate =
1. 1 answer
2. 196 views
(A)After experimentation you have determined the following rate equations:1. Rate = k[H2] [NO]2 2. Rate = k[H2]2[O2] 3. Rate =
1. 1 answer
2. 158 views
You have been asked to calculate the enthalpy change in the followingreaction: 2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) The
1. 1 answer
2. 215 views
You have been given a sample of 4.85 moles of glucose (C6H12O6) and youwant to make a 0.75M solution with it. What will be the
1. 1 answer
2. 187 views
You have a sample which consists of 428g sodium hydroxide (NaOH)dissolved in enough water to make a final solution of 6.4l. What
1. 1 answer
2. 269 views
You have been given a sample of unknown molarity. Calculate the molarity ofa solution which has been prepared by dissolving 8.75
1. 1 answer
2. 267 views
37.0cm³ of a sodium hydroxide (NaOH) solution was pipetted into a conicalflask and titrated with a standard solution of 0.3 mol
1. 1 answer
2. 483 views

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