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The composition by mass of a compound is: C=36.4%, H=6% and F=57.6%. Calculate the empirical formula. If the RFM is 66, what is the molecular formula?

Calculate the moles of each of the 3 elements (to get C=3.03, H=6, F=3.03). Divide these by the smallest mol calculated to get the ratio of the elements. This will get C:H:F as 1:1.978:1 = 1:2:1 and so the e...
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Answered by Sara T. • Chemistry tutor
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Explain the different types of judicial precedent.

Firstly, the doctrine of judicial precedent simply means the following of a particular decision made on a point of law in a previous case. This following of a previous decision is called stare decisis (to st...
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Answered by Priya J. • Law tutor
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How do events in Act 3 Scene 4 of 'Macbeth' give the audience an insight into Macbeth's psychological state?

Act 3 Scene 4 of Macbeth marks an acknowledgement of Macbeth's newfound royal authority, as he hosts the first banquet as king. Whilst the audience is presented with a seemingly sane king at the beginning of...
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Answered by Anna W. • English tutor
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Where does digestion of protein occur?

Digestion of protein starts in the stomach and does not occur in the buccal cavity (mouth). Acidic environment (low pH) due to HCL (hydrochloric acid) in the stomach allow for pepsinogen to be converted into...
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Answered by Michal K. • Biology tutor
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A runner of weight 588N runs at a speed of 8 miles/hr. What is the kinetic energy of the runner? Determine the power exerted by the runner over a distance of 10m.

KE = 1/2 m v^2m = 588/9.8 = 60 kgv = 8 miles/hr = 3.56 m/sKE = 379 JP = E/tt = d/v = 10m/3.56m/s = 2.81 sP = 135 W
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Answered by Eliza D. • Physics tutor
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