What makes the color blue

How many moles are represented by 118 grams of cobalt? cobalt has an atomic mass of 58.93amu

A box has two forces acting on it One force, is 100 Nupward. Another force is 50N downward. What is the net force on the bar 100Nupward 50 Nupward 50 N douaward 100 N downward

One form of transportation that uses nuclear power for energy is the A) airplane. B) automobile. C) motorcycle. D) submarine.

A metal from group 1 and a nonmetal from group 17 are 1.) not likely to bond 2.) likely to form a covalent bond 3.) likely to form an ionic bond 4.) likely to form a metalloid

Which of the following causes tornadoes?

What is 99 times 100

Using complete sentences, explain how large-scale agriculture leads to increased atmospheric CO2?

What is the trend in effective nuclear charge for elements on the periodic table? It decreases across a period but is constant down a group. It increases across a period but is constant down a group.

Which of the following is a benefit of having a standard measurement system that can be used by scientists worldwide

Salt mixed in water is an example of a___ a. solution b. heterogeneous mixture c. colloid d. suspension e. pure substance