The periodic table is arranged in rows and columns. From left to right along a row, the atomic number in each column
a. decreases by 2.
b. increases by 1.
c. decreases for gases.
d. increases for metals.

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

How many moles are contained in 5.6 l of h2 at stp