Is Ne an atom or a molecule and is it a pure element or a compound?

a. Atom, Molecule
b. Molecule, Pure element
c. Atom, Pure element

3. if the dartboard below is used to model an atom, which subatomic particles would be located at z?

Which formula can be used to calculate the molar mass of hydrogen peroxide

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90