How many moles are in 3.50 x 1024 atoms of yttrium

Which defines reaction mechanism in chemistry? the mixing of two or more liquids to form a solution the steps in a chemical reaction in which products result from reactants a process in which a product is changed from one physical form to another

What is the noble gas notation for the element indium, (in, atomic #49) is

Which of the following is an example of oxidation? A: when a pond freezes over. B: When cocoa mix dissolves in milk. C: when rust forms on a nail D: when heat and light is given off a burning log.

Magnesium has a density of 1.071g/cm^3. Aluminum has a density of 2.700 g/cm^3. An unknown metal has a mass of 15g and a volume of 14cm^3. Is the unknown metal magnesium or aluminum? Show your work.

An element's atomic number is 40. How many electrons would an atom of this element have? An atom of element A has 111 protons.

Is a gas that is produced by the ultraviolet radiation in the air in the vicinity of welding operations?

How much MnO2 (s) should be added to excess HCl (aq) to obtain 295 mL of Cl2 (g) at 25 °C and 735 Torr?

Why do people describe water as a universal solvent

What is litmus paper used for? To indicate if all the reactants have been used up to determine if a chemical reaction has occurred to determine pH to detect the presence of water

You open your lemonade stand with 100 lemons, 5 bags of sugar containing 6 cups each, and 10 gallons of water (16 cups per gallon). Which statement is NOT true about the production of lemonade in your stand?