Use the periodic table to determine the molar mass of each of the following elements. Use the correct number of significant figures.

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Apush or pull that moves or changes and object when to objects touch

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)