What is basic of matter that can't be broken down

How would you explain the difference between an element and an atom?

What information would you need to calculate the average atomic mass of an element?

In a neutralization reaction, how many moles of hclo4 react with 1 mole of al (oh) 3?

According to Boyle's law, for a fixed quantity of gas at a given temperature, what quantity relating pressure and volume is constant? A) PV B) P*V C) P+V D) VP

How many ml of cranberry juice is required to prepare a 25 ml 12% cranberry solution using a 20% cranberry stock solution?

If we have 22 molecules of sodium sulfate in water, how many sodium ions will be observed in solution?

Sodiun atom, potassium atom, and cesium atoms have the same?

A molecule is what?

How many electrons in an atom could have these sets of quantum numbers n=7 l=3 ml=-1?

The reaction A+B-> C+D rate=k[A][B]^2 has an initial rate of 0.0810 M/s. What will the initial rate be if [A] is halved and [B] is tripled? What will the initial rate be if [A] is tripled and [B] is halved?