An element's atomic number is 63. How many protons would an atom of this element have?

Spattering does occur and some of the sample is lost onto the laboratory bench. Will the reported mole ratio of tin to oxygen be too high, too low, or unaffected? Explain

What are three conditions that can cause chemical reactions to occur?

What is the mass, in grams, of a sample of 1.72 * 1023 atoms of potassium (K) ? Show your work or explain the steps that you used to determine your answer.

A large flexible balloon contains 1.5moles of a gas in a volume of 27liters. If 1.1moles of the gas are removed and the pressure and temperature do not change, what will be the new volume of the gas? Round to two significant figures.

What is it called when Light changes direction and slows down when it enters water from air.

If a measurement is recorded as 1.2 cm what's the smallest marking on the instrument

Why do the ions in an ionic bond stay together, aka form the bond?

Is it ever possible to extract 100% of a compound from a solution? Why or why not?

Covalent, ionic, and metallic are the three types of attraction between atoms.

A red blood cell has a round structure. A muscle cell has a long, thin structure. Which statement best explains why these two types of cells have different structures