4) express 55mg in kilograms

What happens during midwinter when the North Pole is tilted away from the Sun? A) There is no night. B) The days are very long. C) The days are very short. D) There is no sun at all.

What does each period have in common?

Considering the law of conservation of mass, if 56 g samples of solid iron (Fe) reacts with 24 g of oxygen (O2), how many grams of Iron Oxide (FeO) are obtained?

Why is a food web a better representation of relationships within an ecosystem than a food chain? A. A food web shows that most organisms consume and are consumed by more than one organism. B.

What is Oxygen an example of? 1,2,3 or 4? 1. plasma. 2. gas. 3. liquid. 4. solid.

A gas held at constant volume is heated from - 5 ºC to 50 ºC, if the initial pressure is 1.0 atm, what is the new pressure the gas exerts?

Unknown element x is a metal that ionically bonds to sulfur. is the formula, x3s feasible? why or why not? a) it is feasible. the three metallic ions each receive an electron from sulfur. b) no, it is not feasible.

What is the difference between a period and a group on the periodic table

Oil flows upward in the wick of a lantern because of the liquid property called A. density. B. meniscusity. C. viscosity. D. capillarity.

What causes atomic radii to increase within a group on the periodic table?