It is fresher because of new transportation techniques and refrigerated trailers.
Explanation:
When conducting a melting point experiment, if we were to heat a sample quickly. Large amount heat is provided instantly which would melt the crystals in the tube very quickly, even before the temperature of the thermometer reaches to that level. So the observes melting point would be much lower than the actual melting point when sample is heated slowly.
True! You can use the percentage to determine the amount of moles of each substance in the compound, and then use that information to find the empirical formula.
A. It shows quantitative data that relates two variables
I believe it's alkali metals and alkaline earth metals.
