How much heat energy is needed to raise the temperature of 150 g of water from 40.0 °C to 65.0 °C?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

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.

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond