Which of the following is a nonmetal? A) Calcium

B) Aluminum

C) Potassium

D) Iodine

What form of matter is "vapor"? a. a solid made of a substance that is usually liquid c. a gas made of a substance that is usually solid b. a liquid made of a substance that is usually gas d. a gas made of a substance that is usually liquid

The density of SO2 gas in a container at room temperature 25.0 c is 2.51 g/L Determine the pressure in this flask

If the pH indicator bromothymol blue was added to the nitric acid solution, it's colour would be?

Which describes the use of a renewable energy source? burning natural gas to power city buses using solar cells to heat water for use in homes burning coal to operate the machinery in a factory

A reaction produces 0.829 moles of H2O. How many molecules are produced?

The ksp of cobalt (ii) carbonate, coco3, is 1.0 * 10-10. calculate the solubility of this compound in g/l.

If crown b is more dense than crown a then which is pure gold

In an ecosystem, a population can be defined as A. all the individuals of a species that exist together at a given place and time. B. all individuals of a species born in a specified month in every region of the world. C.

How many grams of NH3 are needed to provide the same number of molecules as in 0.55 grams of SF6?

Round 129.752416 to the requested number of significant figure a. 3 significant figures c. 6 significant figures_22 b. 4 significant figures d. 7 significant figures