On the seashore pebbles that are rough and uneven become smooth and rounded explain how they become smooth and rounded

Which of the following solutions has a 1.0 M? A. 0.050 mol of solute in 25.0 ml solution B. 2.0 mol of solute in 500.0 ml of solution C. both answers are correct D. there is not correct answer

Mechanical advantage can be calculated by which of the following expression? A) input force/output force B) output force/input force C) input work/output work D) output work/input work

List the elements of carbon

What is the ratio of the density of a substance to the density of a standard?

Note that butane has two possible isomers but that decane has 75 possible isomers. Why does the number of possible isomers go up with an increasing number of carbon atoms?

Internal respiration is the transfer of oxygen and carbon dioxide from the lungs to the tissue cells of the body. True or False

Which element is a metalloid? 1. Al 2. Ar 3. As 4. Aa

You move a 25N object 4 meters. Find the work you did

What is the relationship between matter and elements

Which of these would be an appropriate way to describe the concentration of orange candies? Check all that apply the number of orange candies divided by total number of candies the mass of orange candies divided by total mass of candies the volume