Over a million students use our free study notes to help them with their homework
Mass Spectrometry is often used by scientists to determine all the isotopes present in a sample (using their isotopic masses) and thus identify the element. The first stage is called the 'ionisation sta...
Initially it helps to read over the question a couple of times underlining/ highlighting all important information ie. volumes and concentrations. Next it always helps to have a chemical equation to work ...
In this question we have to use the equation Moles= Mass(g)/ Mr. We have the mass of PbO2 so to find the moles we need to divide the mass, which is 37.2g, by Its Mr, which is 207.2 + (162) = 239.2. th...
Add a drop of each liquid to individual test tubes.To each test tube, add dilute nitric acid and silver nitrate solution.A precipitate will form for each ion present.chloride= whitebromide= creamiodide= y...
The equation for the reaction (would be given for this type of question but I ran out of space): C2H4 (g) + H2O (g) ⇌ C2H5OH (g) ∆H = - 46 kJ/molQues...
←
223
224
225
226
227
→
Internet Safety
Payment Security
Cyber
Essentials
