Which of the following is a distinguishing difference between rocks and minerals?
A) Minerals are made of rocks combined in different combinations.
B) Crystals are a type of rock and granite is a type of mineral.
C) Minerals are aggregates of different rocks and elements.
D) Minerals have specific chemical compositions, but rocks do not.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Draw the lewis structure for the trisulfur s3 molecule. be sure to include all resonance structures that satisfy the octet rule.

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .