Units used in gas for pressure

Which of the following is one way to prevent the corrosion of iron? A. Paint exposed iron p21 with protective paint. B. Protect the iron from polluted air. C. Add carbon to the iron. D. Let the iron develop a natural coat of carbonate.

What initial action is the reason behind beginning a scientific investigation?

Which chemical symbols will complete the equation for this decomposition reaction

Which source of evidence did Wegener use to support his theory of continental drift? A. fossils B. magnetic fields C. satellite mapping D. warm equatorial climates

Find the area of a vegetable garden that is 4.83m long and 3.4m wide. Give your answer to the correct significant figure. (use the symbol "e" to indicate exponent)

Is it possible for a molecule only made up of hydrogen and carbon to be polar?

Which of these represents a chemical change?

Why do think there is often only a short amount of time to evacuate an area before an earthquake?

The force that moving, charged particles exert on one another is called? a. Contact force b. Intermolecular force c. Gravity d. Electromagnetic force

Which of the following types of electromagnetic waves has a frequency greater than ultraviolet waves? A) X rays B) infrared waves C) microwaves D) visible light