MULTIPLE CHOICE! A student mixes 60.0 mL ethanol (C2H6O) into a solution that ultimately has a volume of 300.0 mL. Determine the concentration of this solution in volume percent.
A. 5%
B. 20%
C. 25%
D. 500%

(question from discovery education)

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.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 4.20 mol fe and 6.70 mol nio(oh) react?