Which two elements most likely have the most similar properties?

beryllium and boron

scandium and silicon

nitrogen and phosphorus

hydrogen and helium

Which substance takes the shape of and fills the volume of any container into which it is placed?

Which of the following statements about stars is true? All stars are the same age. Stars vary greatly in age. none of these Stars rarely differ in age.

If the solubility of copper chloride (CuCl2) is 151 g/dm3, how much copper chloride can be dissolved in 7.8 dm3 of water?

Describe soda on the effect of baking stomach contents with ph4

Solids, liquids, and gases are three common states of matter. in which of these physical states would a water molecule likely have the greatest energy? a. solid b. liquid c. gas d. the energy is identical in all three physical states.

Select the statements that best describe the properties of an intramolecular sn2 reaction mechanism.

Is a iron nail solid attracted to a magnet and soluble in water

Convert 45.8g of CO2 to mol

Suppose that 0.95 g of water condenses on a 75.0 g block of iron that is initially at 22 °c. if the heat released during condensation is used only to warm the iron block, what is the final temperature (in °c) of the iron block?

How many grams of NaOH are produced with the reaction of 5.00 moles of water?