How are the terms group and period used on the periodic table

What is the percent by mass of carbon in Al (C03) 3

Is the concentration of a solution expressed by the number of moles of solute per kilogram of solvent?

when a sample of a gas is cooled it condenses into a liquid. in which of the following ways do the molecules of the original gas sample compare with the molecules of a liquid.

1. SEP Construct Explanations How do the pH values of weak acids having the same concentration indicate the relative equilibrium positions of the acids? Which of the four weak acids' equilibrium positions lies farthest to the right?

Time that is measured in definite periods such as minutes, day, and years is called

A woman carriers her 100-newton child for a distance of 50 meters to the child's bedroom. How much work does the woman do?

Which statement best describes the compressibility of a gas? A Increasing the temperature of a gas decreases the pressure. B Increasing the temperature of a gas increases the pressure. C Increasing the pressure on a gas decreases the volume.

How many grams are in 3.0 moles of KCI (potassium chloride) ?

3 During a flame test, a lithium salt produces a characteristic red flame. This red color is produced when electrons in excited lithium atoms (1) are lost by the atoms (2) are gained by the atoms (3) return to lower energy states within the atoms

Select the answers below that represent the ionic compounds in this list: na2so4 h2so4 ch3-ch3 n2o4 cacl2 ca3 (po4) 2