One difference between mixtures and pure substances is that A) mixtures can be physically separated. B) mixtures are made of one type of atom. C) pure substances have no chemical bonds. D) pure substances can be physically separated.

Describe the possible components of a buffer solution. (Select all that apply.) A. strong acid and its conjugate base B. strong base and its conjugate acid C. weak base only D. weak base and its conjugate acid F. weak acid only G.

Deforestation would most directly result in

Consider a 1.0-l flask containing neon gas and a 1.5 l flash containing xenon gas. both gases are at the same pressure and temperature. according to avogadro's law, what be said about the ratio of the number of atoms in the two flasks?

What do you call all elements that are clearly not metals? ? nonmetals ? metalloids

What is the density of an object with the density of 3 when cut in half?

Power is measured in which unit?

Consider a bond between boron and oxygen. Which atom would you expect to bear the partial negative charge?

Which of the changes are physical changes

How many grams of sodium are contained in 0.255 mol of 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.