A scientist adds different amounts of salt to 5 bottles of water. He then measures how long it takes for the water to boil. what is the dependent variable in this experiment?

Which of these chemical equations demonstrates the law of conservation of mass as it applies to the combustion of ethane? A. 2 C 2 H 6 + 7 O 2 → 4 C O 2 + 6 H 2 O B. C 2 H 6 + 3 O 2 → 2 C O 2 + 3 H 2 O C. C 2 H 6 + 5 O 2 → 2 C O 2 + 3 H 2 O D.

What is impossible for a machine to do? do a greater amount of work than the amount of work done on the machine apply a force in a direction that is different than the direction of the force applied to the machine move an object a greater distance

What is indicated when contour lines are far apart on a topographic map?

What is most likely true of an atom with a mass of 15 amu? A) There are 15 protons. B) There are 15 electrons. C) The total number of protons and electrons is 15. D) The total number of protons and neutrons is 15.

A squirrel runs along an overhead telephone wire that stretches from the top of one pole to the next. It is initially at position x i = 3.47 m, as measured from the center of the wire segment. It then undergoes a displacement of Δx = - 6.29 m.

The difference in electric potential between a thunder cloud and the ground is 1.53 108 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential.

A vitamin called folic acid is very important for neural tube development, which is the development of the baby's

Which vocabulary term is survival of the fittest

An object weighs 32 newtons. What is its mass if a gravitometer indicates that g = 8.25 m/s2?

At what stage of a reaction do atoms have the highest energy? a. reactant stage b. product stage c. transition state stage d. The stage of highest energy depends on the atom.