Suppose you want to do an experiment to hear how three different objects would sound when you dropping them the same distance. you drop a pebble a rock, and a grain of sand. what are the variables of your experiment

What did the immigration act of 1965 do?

A chemist determined by measurements that 0.050 moles of aluminum participated in a chemical reaction. Calculate the mass of aluminum that participated in the chemical reaction. Be sure your answer has the correct number of significant digits.

The pressure gauge on a compressed air tank reads 43.2 pounds per square inch (lb/in?). What is the pressure in atmospheres (atm) ?

A water molecule has bonds with an unequal charge distribution. Choose all the statements that apply to water. * Water is a polar covalent molecule. * Water is a nonpolar covalent molecule. * Water is an ionic molecule. * Water is a bent molecule.

Name two metals that do not always lose the same number of electrons

In the process of oxidizing i - to i2, so42 - is reduced to so2. how many moles of so2 are produced in the formation of one mole of i2? express your answer numerically in moles.

Does pressure decrease when a gas is removed

This is the ability of matter to change into a different substance.

How can I write ecology in my own words for a definition

The amount of time it takes for one-half of the original amount of an isotope to decay is known as its