If you know that the density of water at 25 ° C = 1 g / cm3, which of the liquids shown in the below table do not float on the surface of the water The options are
1) Aceton and its density is 0.784
2) Alcohol and its density is 0.786
3) Glycerine and its density is 1.26

Aaah this is due in an hour please help

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What are the similarities between compounds and mixtures?