Suppose Galileo dropped a lead ball (100 kilograms) and a glass ball (1 kilogram) from the Leaning Tower of Pisa. Which one hit the ground first? (Assume that there is no air resistance.)

What organ is affected by Hep B?

How do you determine how many electron energy levels an element has

2. Describe in a step by step manner how you determined the identity of the two unknowns. Discuss both what you determined the unknowns to be and the method that you used to find them.

Will make brainliest if answer correctly. Why would you expect strontium to be chemically more similar to calcium? They are in the same family/group. They are in the same period. They have the same atomic number. They have the same atomic mass.

Classifying Chemical Reactions Copper (II) sulfide is oxidized by molecular oxygen to produce gaseous sulfur trioxide and solid copper (II) oxide.

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?