6. Identify each element as a metal, metalloid, or nonmetal

a. gold

b. silicon

C. sulfur

d. barium

Define physical equilibrium in chemistry

If the mass of a material is 104 grams and the volume of the material is 21 cm3, what would the density of the material be?

Why is a seat belt so important while you in a vehicle?

Pb (NO3) 2 (aq) + HCl (aq)

To balance a chemical equation numbers called blank are used

Butane - ethane - methane - propane: What do these hydrocarbons have in common? A) The same number of carbons present. B) They all have polar covalent bonds. C) They all have single covalent bonds. D) They have the same structural formulas.

Identify the form of energy that is converted into ther - mal energy by your body

Determine the number of moles of sulfur trioxide produced when 3.5 moles of oxygen gas is consumed in the reaction

For each of the following balanced oxidation-reduction reactions, (i) identify the oxidation numbers for all the elements in the reactants and products and (ii) state the total number of electrons transferred in each reaction. 1.

Hypervitaminosis is a serious health threat associated with excessive amounts of ingested fat-soluble vitamins. why do water-soluble vitamins not commonly pose the same threat?