What is the name of the star closest to Earth?

OA) the Sun

OB) Betelgeuse

OC) Alpha Centauri

OD) Proxima Centauri

A sample that contains 4.26 mol of a gas at 237 K has a pressure of 0.559 atm. What is the volume? Answer in units of L.

How many atoms of mercury are present in 3.4 cubic centimeters of liquid mercury? the density of mercury is 13.55 g/cc?

Which phrase is the best description of an artificial satellite A. A rocket that has a very small amount of thrust B. A spacecraft that orbits a celestial body C. A telescope that allows you to see distant planets D.

Every chemical reaction involves a change in

An electric kettle uses electrical energy to boil water. Energy from the electricity is transferred to the water, heating it up. An electric ice maker also uses electrical energy, but it freezes water to form ice.

Which of these resources isn't renewable: Sunlight Water Wind Metal

The internal pressure of a cylinder with one ounce of liquid r410a which has been sitting in 100 degree truck

The transfer of from one molecule to another is an oxidation-reduction reaction, or redox reaction.

Banded iron formations were caused by the production of which atmospheric gas? A) Carbon Dioxide B) Water Vapor C) Oxygen D) Nitrogen

3. Which net ionic equation describes this reaction? 3Ca (OH) 2 (aq) + 2FeCl3 (aq) → 3CaCl2 (aq) + 2Fe (OH) 3 (s) 3Ca2 + (aq) + 3OH - (aq) + Fe3 + (aq) → Fe (OH) 3 (s) + CaCl2 (aq) Fe3 + (aq) + 3OH - (aq) + 3Ca2 + (aq) → Fe (OH) 3 (s) + 3Ca2 + (aq)