Choose all of the statements that accurately describe the physical properties of hydrocarbons. a. Salts like NaCl dissolves readily in liquid hydrocarbons such as hexane.
b. The freezing points of hydrocarbons are lower than that of water.
c. Hydrocarbons are miscible with organic solvents such as carbon tetrachloride.
d. All hydrocarbons are denser than water at room temperature and atmospheric pressure.
e. Hydrocarbons mix poorly with polar solvents such as water or ethanol.

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.