Looking at the structure of caffeine, explain why it is very soluble in a non-polar solvent and a little soluble in water.

What compound is Rb2CrO4

What information do we need to determine the molecular formula of a compound from the empirical formula?

What choice is not a characteristic of a catalyst?

Calculate the molarity when 250 mL of solution is prepared from 5.00 g KOH.

Do blood cells have rigid cell walls

How many grams of methane gas (CH4) are in a 15.8-liter sample at 1.2 atmospheres and 27°C? Show all work used to solve this problem

Oxygen forms a number of compounds with sulfur, many of which are quite reactive. One such compound is 57.20 % by mass S. Calculate the number of grams of oxygen present in a sample of this compound that contains 50.00 grams of S.

What is meant by "pressure of the atmosphere?" What causes this pressure?

A substance is analyzed and found to contain 85.7% carbon and 14.3% hydrogen by weight. A gaseous sample of the substance is found to have a density of 1.87 g/L, and 1 mol of it occupies a volume of 22.4 L.

Which property of a mineral sample does not influence how quickly it settles in water? 1) density 2) hardness 3) shape 4) size