A scientist needs to know the temperature of a mixture to the nearest 0.05°C. Which thermometer would be most useful for the scientist?

Calculate the number of molecules present in 0.750 mol of mgo.

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene