Determine the molecular weight of H2O.

18 g

18.0 g

18.01 g

18.016 g

When a fluid is heated, what changes occur? It becomes more dense and begins to rise. It becomes less dense and begins to rise. It becomes more dense and begins to sink. It becomes less dense and begins to sink.

In a given chemical reaction the energy of products is great than the energy of the reactants which statement is true?

In which molecule the attraction between H and the atom to which it is bonded be the greatest 1) HCI 2) HF 3) HBr 4) HI

If 10. g of AgNo3 is available, what volume of 0.25 M AgNo3 can be prepared

Which physical properties do all stars have? Check all that apply. They are made of gases? They shine very bright? They have a spherical shape? They contain iron in their cores? They make energy through fusion? @nattyames snap

A 20.0 mL sample of a NaCl solution has a mass of 21.040 g. After the solution is evaporated to dryness, the dry salt residue has a mass of 4.348 g. Calculate the following concentrations for the NaCl solution.

What are the intermolecular forces present in Argon?

What characteristic is shared by most simple polyatomic ions? A) They are anions. B) They are bonded ionically. C) They are cations. D) They have positive charges.

Potassium ions (k+) have a positive charge. What happens to a potassium atom electrons when it becomes an ion

At what pH do you think acids become too dangerous to touch? Basis? Explain your answers.