Only three isotopes of magnesium exist on earth. 24Mg is the most common form at 78.70% natural abundance with mass of 23.98504 AMU, 25 Mg has 10.13% natural abundance while 26 MG has a natural abundance of 11.17 and a mass of 25.98259 AMU. What is the mass of the 25 Mg isotope if magnesium has an average atomic mass of 24.31 AMU?

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

Why is the structure of molecule important to its function?

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.