How are reflecting telescopes different from refracting telescopes? *

Reflecting telescopes need light sources; refracting telescopes don't.
Reflecting telescopes magnify objects; refracting telescopes minimize them.
Reflecting telescopes magnify objects in outer space; refracting telescopes only magnify objects on Earth.
Reflecting telescopes use mirrors to collect light; refracting telescopes use lenses.

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin