Why is caffeine more soluble in dichloromethane compared to water?

Caffeine would require a non-polar solvent to dissolve it

Explanation:

The general rule of solubility is that "like dissolves like". Polar solvents would dissolve polar solutes and non-polar solvents would dissolve non-polar solute.

Water is a polar solvent and would readily dissolve polar compounds such as the range of ionic/electrovalent compound like NaCl and polar covalent compounds.

For non-polar solutes, compounds like dichloromethane would readily dissolve them. Both caffeine and this solvent are both organic compound and would interact readily with one another. Although this compound is slightly polar, it would readily dissolve caffeine

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally

the answers are

c and c