What are the main properties of liquids (in contrast to gases and solids) ? Check all that apply.

Water is an amphoteric substance because it can receive and donate hydrogen ions. True or False?

What is x + 4 = - x - 4?

Determine the number of significant figures in the measurement quantity: 6.010m^2

17.8 grams of sodium chloride are added to 217 grams of water. The volume of the water is 200 cm3. Sodium chloride has a solubility of 360 g/dm3. What is the mass of the solution?

Describe how the presence of a lone electron pair affects the spacing of shared bonding orbitals. Compare the size if an orbital that has a shared electron pair with one that has a lone pair.

If a scientist creates a new rock-like substance in a laboratory, why wouldn't this type of material be classified as a true mineral?

Select the correct responses to the questions from the drop-down menus. Which wind blows cool air inland during the day? Which wind blows cool air toward the sea at night? Which winds blow steadily from specific directions and over long distances?

Consider the balanced equation for the following reaction: 3Ca (ClO3) 2 (aq) + 2Li3PO4 (aq) → Ca3 (PO4) 2 (s) + 6LiClO3 (aq) Determine the theoretical yield of LiClO3 (aq) in grams if the percent yield of LiClO3 (aq) is 81.0% and 9.

What is the total number of valence electrons in a sulfide ion in the ground state? (1) 8 (3) 16 (2) 2 (4) 18

Write the name and formula of the compound made of magnesium and fluorine