Explain the change in mass that occurs when the following substances are separately heated in open crucibles

(a) Copper metal

(b) Copper (II) nitrate

Non-metal liquid with 45 neutrons

What volume of 0.812 m ammonium sulfate contains 7.65 g of ammonium ion?

3. What are the missing coefficients for this skeleton equation? Al 2 (SO 4) 3 (aq) + KOH (aq) → Al (OH) 3 (aq) + K 2 SO 4 (aq) 1, 3, 2, 3 1, 6, 2, 3 4, 6, 2, 3

A mass of 100.0 g of solute is dissolved in water so that 850. mL of a 0.7500 M solution has been prepared. What is the molar mass of the solute?

A water sample contains the pollutant chlorobenzene with a concentration of 15 ppb. What is the molarity of this solution? Assume the density of the solution is 1.00 g/mL. The molar mass of chlorobenzene is 112.6 g/mol.

Balance this equation- Na3PO4 + KOH - > NaOH + K3PO4

Carbon dioxide, or CO2, is a (n) A.) atom. B.) mixture. C.) element. D.) compound.

If the atomic number of an element is 6 and its mass number is 20, how many neutrons are in the atom's nucleus?

A chemist exploring potential fuels for use in outer space is considering using vaporized aluminum chloride as a fuel.

Dinitrogen monoxide has a structural formula of NNO and requires resonance structures in order to draw the Lewis structures of the molecule.