In the formula X2O5, the symbol X could represent an element in Group

(1) 1 (3) 15

(2) 2 (4) 18

as the flames heat the gases in the balloon the volume of the gases increases at constant pressure the volume of all gases increases with increasing temperatures is this statement a scientific theory or law explain

The ratios of volumes of the gaseous reactants and products in a chemical reaction at constant temperature and pressure can be determined from the

Indicate which of the numbers in the following equations are coefficients and which are subscripts 3H2SO4 + 2Al > Al2 (SO4) 3 + 3H2

What is a common property of all the forms of carbon

9. Matter is anything that Ms O A. has mass and takes up space. O B. is important to human society. O C. has only one physical state O D.

When 12.4 grams of KBr are dissolved in enough water to create a 170-gram solution, what is the solution's concentration, expressed as a percent by mass?

The Bohr theory can be extended to non-hydrogen one electron ions such as He + and Li2+, in which case the energy depends on the different atomic numbers Z for the respective atom.

Each day the earth spins on its axis. this is known as what?

Is Fe a element or a compound? Is Aluminum a element or a compound? Is HCI a element or a compound? Is Hydrogen Peroxide element or a compound? Is H2 element or a compound? Is NaOH element or a compound?

Which of the following chemical reactions is an oxidation-reduction reaction? Answer WO3 + 3H2 W + 3H2O KNO3 + LiCl LiNO3 + KCl CaSO4 + 2NaCl Na2SO4 + CaCl2 Mg (NO3) 2 + 2HBr MgBr2 + 2HNO3 According to the collision theory and model created to