What is chromatography used for? Select all that apply. ]

dissolving substances

separating liquids in a mixture

crystallizing substances

separating gases in a mixture

What is the electronegativity difference in the compound aluminum chloride, alcl3? a. 4.77 b. 3.16 c. 7.87 d. 1.55?

Which will be true for any actual or potential nucleophilic substitution reaction?

In a balanced chemical reaction, the total mass of the products always equals the

Arrange each set in order of decreasing atomic size: (a) Ge, Pb, Sn (b) Sn, Te, Sr (c) F, Ne, Na (d) Be, Mg, Na

24. The standard free energy of the aldolase reaction (in the reverse aldol direction) is 23.8 kJ/mol. The concentrations of the three metabolites in the hepatocyte are: fructose 1,6-bisphosphate (1.

An equilibrium is dynamic. True False

In a lab, a student dissolves 6.9 g of sodium chloride (NaCl) in 125 g of water (H2O). What is the molality concentration of the solution?

Audrey is driving 50 miles in 2 hours what is her average speed?

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?