Describe where to look on the periodic table to find elements which have similar reactivity and other properties

An object is hanging from a rope. When it is held in air the tension in the rope is 8.86 N, and when it is submerged in water the tension is 7.84 N. What is the density of the the object

Suppose there is a sample of xenon in a rectangular container. The gas exerts a total force of 6.53 N perpendicular to one of the container walls, whose dimensions are 0.111 m by 0.221 m. Calculate the pressure of the sample.

How are particles in different state of matter?

A solid ball has a radius of 2cm and a length of 7cm. It has a density of 3.1g/cm3 What is the mass of the cylinder?

All compounds are made of A.) atoms of two or more elements B.) two or more atoms of the same element C.) atoms arranged in a crystal D.) atoms joined by covalent bonds I think its D.) but im not sure.!

A hot-air balloon is ascending at the rate of 14 m/s and is 84 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

Now assume that the pitcher in Part D throws a 0.145-kgkg baseball parallel to the ground with a speed of 32 m/sm/s in the + x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line.

How far away is a cliff if an echo is heard 0.486 s after the original sound? Assume that sound traveled at 343 m/s on that day.

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

Minerals such as sulfur can sometimes be identified by colors, true or false.