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Brian Giles
Questions and answers by visitors named
Brian Giles
Questions (22)
37.0cm³ of a sodium hydroxide (NaOH) solution was pipetted into a conical
flask and titrated with a standard solution of 0.3 mol
3 answers
351 views
You have been given a sample of unknown molarity. Calculate the molarity of
a solution which has been prepared by dissolving 8.75
2 answers
173 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
2 answers
199 views
You have been given a sample of 4.85 moles of glucose (C6H12O6) and you
want to make a 0.75M solution with it. What will be the
2 answers
122 views
You have been asked to calculate the enthalpy change in the following
reaction: 2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) The
2 answers
128 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 =
2 answers
94 views
After experimentation you have determined the following rate equations:
1. Rate = k[H2] [NO]2 2. Rate = k[H2] 2 [O2] 3. Rate =
2 answers
131 views
Through experimentation, you note that at high temperatures ethyl chloride
produces HCl and ethylene by the following reaction:
2 answers
274 views
For the following reactions, determine the equilibrium constant equation. You
must show your workings within your submission. 1)
2 answers
143 views
Explain Le Chatelier’s principle
2 answers
116 views
The chemical reaction which occurs during the Haber process is:
Nitrogen + Hydrogen Ammonia N2(g) + 3H2(g) 2NH3(g) Use Le
2 answers
111 views
Use Le Chatelier’s principle to explain what would happen if you increased the pressure of the Haber process reaction.
2 answers
96 views
Use Le Chatelier’s principle to explain what would happen if you increased the concentration of Nitrogen at the start of the
2 answers
88 views
You have been asked to calculate the enthalpy change in the following
reaction: 2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) The
2 answers
204 views
Explain the class of lever system in use when the athlete moves from standing onto her toes. Explain why this gives the athlete
2 answers
120 views
Explain the structure of striated (skeletal muscle) and compare the muscle structure in areas of the body that move frequently
17 answers
258 views
Use the sliding muscle filament theory to explain the molecular mechanisms behind muscle contraction in these types of muscles
2 answers
177 views
What is the structure and function of smooth muscle?
2 answers
120 views
Explain how bones grow and develop and suggest how training as a gymnast can affect bones whilst physically training and living
2 answers
118 views
Explain how bones repair when fractured
2 answers
141 views
Explain the effects of old age and disease on movement.
2 answers
141 views
Explain the nature of the image formed in a plane mirror.
2 answers
169 views
