What element has the electron configuration 1s2 2s2 2p6 3s2 3p1?

When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?

How many moles are in 10.0 grams of sodium hydroxide?

How many valid electron dot formulas-having the same number of electron pairs for a molecule or ion-can be written when a resonance structure occurs?

Hands on mole activity

How many minutes will it take for the quantity of n2o5 to drop to 1.9*10-2 mol?

What's is the percent composition by mass of oxygen in magnesium oxide, Mg0

Which consequence of new fishing methods had the most immediate impact on the environment? A. Diesel engines on newer ships contributed to global warming B. Increased reliance on fish in the American diet led to health problems C.

Which statement best describes the basis of the band theory of metallic bonding? a. Molecular orbitals overlap to form atomic orbitals in which the valence electrons of the atoms travel. b.

Which of the following is always valid? Choose only ONE answer. 1. W = - P ∫ dV, for the calculation of work in a mechanically-reversible piston-cylinder arrangement 2. For any fluid undergoing a change in pressure, Cp = dH/dT. 3. ΔH = ΔU + Δ (PV) 4.

Are kilograms heavy?