Why were some scientists critical about Mendeleevs periodic tables

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Which compound contain an iron with a 3+ charge

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.