(Question)
Answer the following question given this paragraph: Mass Percentage Earlier in this chapter, we introduced percent composition as a measure of the relative amount of a given element in a compound. Percentages are also commonly used to express the composition of mixtures, including solutions. The mass percentage of a solution component is defined as the ratio of the component's mass to the solution's mass, expressed as a percentage: mass percentage =. Q: The mass percentage of a solution component is defined as the ratio of the component's mass to ________? Choices: - enough ' s mass - solvent's mass - liquid's mass - solution ' s mass A:
(Answer)
solution ' s mass

(Question)
Answer the following question given this paragraph: In this equation, the letters A and B represent the reactants that begin the reaction, and the letter C represents the product that is synthesized in the reaction. The arrow shows the direction in which the reaction occurs. Q: What term is used to describe the sequence of elementary steps that together comprise an entire chemical reaction? Choices: - source mechanism - elemental mechanism - potassium mechanism - reaction mechanism A:
(Answer)
reaction mechanism

(Question)
Answer the following question given this paragraph: Figure 13.6 Bacteria are divided into two major groups: Gram-positive and Gram-negative. Both groups have a cell wall composed of peptidoglycans: In Gram-positive bacteria, the wall is thick, whereas in Gram-negative bacteria, the wall is thin. In Gram-negative bacteria, the cell wall is surrounded by an outer membrane. Q: Gram-positive and gram-negative bacteria are distinguished by thickness of what? Choices: - cell membrane - cell weight - cell length - cell wall A:
(Answer)
cell wall