Atomic mass of hydrogen

For the reaction 2Na (s) + Cl2 (g) - > 2NaCl (s), how many grams of NaCl could be produced from 20 L of Cl2 (at STP) ?

While conducting an experiment using pyrophorics, it comes in contact with air and ignites. what kind of extinguisher should be available in the lab?

A piston system absorbs 50.5 J of energy in the form of heat from the surroundings. The piston is working against a pressure of 0.491 atm. The final volume of the system is 56.2 L.

Which of the following is a chemical property? A. Ability to change color upon exposure to air B. Ability to conduct electricity C. Ability to conduct heat D. Ability to become magnetic

1. Which of the following best describes the difference between the procedures used in Experiments 1 and Experiment 2? A. In Experiment 1, the temperature was varied; in Experiment 2, the diameter of the tube was varied.

How many moles does the mass quantity 130g of H2O have?

It requires 0.0780L of a 0.12 M HCl solution to completely neutralize 0.0280L of an unknown LiOH solution. What is the concentration of the unknown LiOH solution?

Which best describes the two ways that energy is measured A. In convection and in temperature B. In temperature and in radiation C. In radiation and in convection D. In wavelength and in temperature

What usually happens to the outer electrons of metallic atoms when they combine chemically with nonmetallic atoms?

How many moles of ca atoms are in 534.0 g ca?