Which elements consists of a metal a matalloid and a noble gas

1) aluminum, sulfur, argon

2) magnesium, sodium, sulfur

3) sodium, silicon, argon

4) silicon, phosphorus, chlorine

How many moles of cobalt atoms are there in 6.00x10^9 Co atoms?

Methyl salicylate, C8H8O3, the odorous constituent of oil of wintergreen, has a vapour pressure of 1.00 torr at 54.3oC and 10.0 torr at 95.3oC. a. What is its vapour pressure at 25oC? b.

29. Explain why Elements located in the Alkali group bond so readily and easily with the Halogens Group

Inside stars in space, the nuclei of hydrogen atoms fuse together to form helium atoms. This represents which form of energy?

Explain, in terms of charge distribution, why a molecule of carbon tetrachloride is a nonpolar molecule.

A force is applied but nothing happens

Explain how you can use physical properties to compare substance

What is the pH of pure water? 2.0 5.0 7.0 12.0

When is a pie chart used

The strength of an electric field depends on the