The number 80 in the name bromine-80 represents

a. the mass number.

b. the sum of protons and electrons.

c. the atomic number.

d. none of the above.

What are the empirical and molecular formulas for a compound related?

What are causes of air pollution

Common definition of an acid

A solution of CaCl₂CaCl₂ in water forms a mixture that is 31.0%31.0% calcium chloride by mass. If the total mass of the mixture is 650.5 g, 650.5 g, what masses of CaCl₂CaCl₂ and water were used?

Consider the location of barium, chlorine, iodine, and strontium on the periodic table. Electronegativities Which type of atom has the strongest attraction for electrons in bond formation? barium (Ba) chlorine (Cl) iodine (I) strontium (Sr)

Where does transcription happen? why is it only in this location?

True or false during decomposition nitrogen gas is changed into nitrogen compounds

Which of the following is a suggested practice to invite families to participate in decision-making and goal-setting for their child? A. Advocacy events B. Take-home backpacks C. Family/teacher conference D. Weekly newsletters

TRUE OR FALSE A stable mixture of two or more mixable substances is called an emulsion

A chemical engineer is developing a process for producing a new chemical. One step in the process involves allowing a solution of potassium hydroxide to react with a solid. Which action would most likely increase the reaction rate for this step?