What is is the variable and experimenter chooses to change

How would you expect a sample of pentane to behave under similar experimental conditions?

You are taking a road trip and your car gets 25 miles to the gallon. It has a gas tank which holds 14 gallons of gas. If this is the case, how many times will you have to fill up the tank if your trip distance is 250 miles?

What is the stationary phase in chromatography?

When elements combine, the compound that form has different properties than the original elements. List the property of copper, sulfur, and copper sulfide

Consider the balanced equation for the following reaction: 3CuO (s) + 2NH3 (g) → 3H2O (l) + 3Cu (s) + N2 (g) If CuO is present in excess, determine the amount of NH3 needed to produce 2.94 moles of H2O.

What two quantities are conserved in every chemical reaction? a. moles and mass c. volume and mass b. mass and atoms d. moles and atoms?

What two chemical mechanisms change pyruvate to acetyl-CoA in the pyruvate dehydrogenase complex? Group of answer choices a) Decarboxylation and condensation. b) Oxidation and decarboxylation. c) Condensation and dehydrogenation.

Which earth cycle does the suns energy drive

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of