The number of protons in an atom of an element always equals its atomic weight.

a. True

b. False

OLLU What are the number of atoms in 22.4dm of chlorine gas at S. T. P: A. 10 B. 20 C 6.02 x 1023 - 1.2 x 1024 3

Can you use Pv=nRT with knowing this? How many moles of water vapor were in the can? Assume pressure is 1atm and temperature is 100C? You know you filled the bottom with 3mL of water of the can.

What happens when the magnet is removed from the coil in a circuit? a. The current stops c. The voltage decreases b. The current changes direction d. Power output increases

How does the magnitude of kp for the reaction 2hi (g) ⇋h2 (g) + i2 (g) change if the equilibrium is written 6hi (g) ⇋3h2 (g) + 3i2 (g) ?

what property easily changes in gases but does not easily change in solids a. mass b. color c. shape d. smell

Amber has developed a line of organic lotions and handmade soaps with unique, herb-based scents and a touch of bee balm. She plans to sell these products to the wealthy residents of a nearby resort town.

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound? a. It has the formula XZ2 b.

Are protons positive and neutrons neutral

Why might it be useful to determine the elements that a planet or moon is made up of?

Which of these is an example of a solution A Sand stirred in water B Sugar stirred in tea C A glass of water with ice in it D Oil and vinegar in a salad dressing jar