The electron configuration of an element is 1s^22s^22p^6.

Describe what most likely happens when an atom of this element come near an atom having seven valence electrons.

Substances with strong intermolecular bonds vaporize _ than those with weaker bonds. faster more easily at the same rate slower

A board has a mass of 750 g. If you ground the whole board down to sawdust, what would be the mass of the pile of sawdust?

Iodine has many isotopes, but only iodine-127 is stable and is found in nature. One radioactive iodine isotope, I-108, decays by alpha particle emission. Iodine-131 is also radioactive and has many important medical uses.

In the reaction 2k (s) + 2h2oh (aq) + h2 (g) which of the reactants is a solid A) K B) H2O C) KOH D) H2

Water is decomposed into hydrogen gas and oxygen gas. What mass of water must decompose to fill a 3.00 L flask to a total pressure of 2.00 atm at 298 K with a mixture hydrogen and oxygen? 2 H2O (l) → 2 H2 (g) + O2 (g)

Using activated charcoal to separate heavy metals from water is a process known as scrubbing. True or False

If 119.5 g of iron is mixed with 279.50 g of copper (II) nitrate, what is the limiting reagent for the reaction?

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.

Consider the reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) A reaction mixture initially contains 5 moles of NO and 10 moles of H2. Which set of amounts best represents the mixture after the reactants have reacted as completely as possible?