If an atom of lithium has a mass number of 9, what is the number of neutrons?

Según la Organización Mundial de la Salud, el nitrato de plata (densidad = 4.35 g/cc) es una sustancia con propiedades cáusticas, astringente, antiséptica y antiinfecciosa que apenas puede absorberse por la piel.

What is one similarity and one difference between a binary ionic compound and a binary molecular compound?

Read the chemical equation. Mg + 2HCl → MgCl2 + H2 How many moles of MgCl2 are produced from 3 moles of HCl? 0.3 0.5 1.0 1.5

Which statement best describes how a catalyst can speed up a chemical reaction? A. The catalyst makes lower energy pathways available. B. The catalyst increases the concentration of products. C. The catalyst binds to enzymes to release substrates. D.

What is the [h3o+] for a solution at 25°c that has poh = 5.640?

Identify whether each compound will ionize or dissociate in water. Sodium sulfate (Na2SO4) Ammonium phosphate ((NH4) 3PO4) Sulfuric acid (H2SO4) Potassium iodide (KI)

The equation below shows hydrogen reacting with oxygen to produce water. 2H2+O2>2H2O if 16mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

The density of a metal is 9.80 g/mL. What is the mass of a sample of metal when dropped in 28.9 mL of water, the volume increases to 56.4 mL?

Does sound travel best through solids, liquids, or gases?

Which term refers to the number of molecules or atoms that participate as reactants in an elementary step in a chemical reaction? molecularity particulates reactants submolecular