What is a particle diagram to illustrate the composition of air

Which elements are diatomic?

The difference in the water levels of a beaker holding an upside-down buret containing a pocket of hydrogen gas is 23 cm H2O.

How many atoms of hydrogen are represented in 2 (NH4) 2504? A. 4 B. 8 C. 16 D. 32

how do the bohr model and the quantum mechcanical model of the atom differ in how they describe electrons?

If every oxygen ion (combined with an aluminum ion) has a charge of - 2, what must the charge of each aluminum ion be?

Identify 3 physical changes that could occur with a sheet of paper

What makes an acid or base strong?

In a laboratory, Carlos places one plate with grape jelly and another plate with cooked brown rice inside an ant farm. The next day, he finds that both plates are filled with ants.

Which statement is true at STP? (The atomic mass of Zn is 65.39 u.)

A sample of gas has a volume of 2.4 L and a pressure of 1.2 atm. What would the pressure of the same gas sample be if the volume is reduced to 1.8L at a constant temperature?