What is the symbol for the ion with 19 protons and 18 electrons?

Frankie is walking to the bus stop in a dense fog. What must be present in order for fog to form? A. high air pressure B. high humidity C. high temperature D. high winds

What are the two most important components of cloud formation?

When aluminum oxidizes in air, it forms aluminum oxide (ai2o3) : 4ai (s) + o2 (g_ - > 2ai2o3 (s) if a 77 g sheet of aluminum oxide formed completely in excess oxygen, how many grams of aluminum were oxidized?

In a hydrogen atom, what color is the emission line observed when electrons drop from the fifth to the second energy level?

What does the subscript 2 indicate in the compound mgcl2?

Diamond has a density of 3.26 g/cm3. What is the mass of a diamond that has a volume of 0.276 cm3?

Which sample of matter is a mixture? Air, water, ammonia

What does the subscript in chemicial formulas tell you?

Why do we crush solids before putting them into a solvent?

6. We have many vestigial structures that are similar to structures on modern day chimpanzees. How can we interpret this information?