What percentage of the atoms in a sample of plutonium-238 will remain radioactive after 263.1 years

10. according to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

What overall charge must all compounds have

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.