How many variables are there in science

What is the pH of the lye in soap?

If a student calculated 0.02789 moles of copper (II) cations (Cu2 + ions) in the sample, how many moles of copper metal (Cu0) could be obtain from the sample at the end of the experiment?

Given the following pairs of elements, predict whether they will form a bond that is primarily ionic or covalent. Be able to explain Lithium and oxygen Fluorine and Chlorine Calcium and Sulfur

While experimenting with acid-base reactions, a student mixes lithium hydroxide (LIOH) and hydrofluoric acid (HF) together. The products of the reaction are and

Do two objects with the same mass always have the same volume

What water activities might be easier to do in Lake Assal's salty water? What activities could be more difficult?

The suffix "-megaly in the term gastromegaly means:

The harder you strike a drum, the greater the sound's A) medium B) volume C) frequency D) pitch

The equation X + Y 2Z has the rate law equation shown below. Which of the following statements best describes the relationship of X on the rate of the reaction? rate = k[X]2[Y] Changing X has no effect on the reaction rate.

What moves in or out of a substance during a change of state?