How many electrons are in p orbitals in Si (Silicon) ?

The rotation of the Earth causes what?

Which element has the largest density at stp

A sample of 35.1 g of methane gas has a volume of 5.20 l at a pressure of 2.70 atm. calculate the temperature of the gas.

Classify carbon dioxide: a. S = homogeneous mixture/solution b. E = element c. HE = heterogeneous mixture d. C = compound

Proteins are made of monomers called

Write a balanced chemical equation for the complete combustion of C3H7BO3, a gasoline additive. The products of combustion are CO2 (g), H2O (g), and B2O3 (s).

Which of the following polymers is used in plastic bottles and plastic containers? Select one: a. LDPE b. PVC c. Polystyrene d. HDPE e. Polypropylene

Which of the following statement is not true? A) The sun is involved in producing tides B) There can be two high tides in one location during a single day C) Only the oceans have tides D) If there is a high tide, there will be a low tide

A solution which has a concentration that exceeds its predicted solubility at a certain temperature and pressure would be -

Convert 4.992*1010 g to each of the following units. B. Mg c. mg D. metric tons