What is the molar mass of a substance? a. the mass in grams of one mole of a substance b. the number of particles in one gram of a substance c. the number of moles in one gram of a substance d. the mass in grams of one particle of a substance

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .