John weighs 115 kg. Sally weighs 115 lb. Who is heavier of the two?

3. What causes hydrogen bonding?

An unknown gas is found to diffuse through a porous membrane 4.11 times more slowly than h2 what is the molecular weight of the gas?

Part b. 1. 6 m h2so4 is carelessly substituted for 6 m hcl. will more or fewer drops of 6 m h2so4 be required for the litmus to change color? explain.

What unit is used to express volume of a solid

Hat kind of intermolecular forces act between a chloroacetylene c2hcl molecule and a dichlorine monoxide molecule?

What is the number of moles of 27.6g of lithium?

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes