What happens to matter during a chemical reaction?

A. Some matter is destroyed and some is created.

B. Some matter is destroyed.

C. Matter is neither destroyed nor created.

D. Some matter is created.

Which element has the electron configuration [Xe] 6s2 4f14 5d10 6p2?

Certain hydrocarbon is 92.3 % carbon and 7.7 % hydrogen by mass. If the molar mass of the hydrocarbon is approximately 40 g/mol, what is its molecular formula?

If a bond were to form between 2 elements, which of the pairs shown would be held together by a nonpolar covalent bond? Hydrogen and hydrogen Lithium and chlorine Aluminum and oxygen Hydrogen and chlorine

Provide an example of a scientific model and describe why/how the model is used.

Who are the characters for the movie Biker Boyz

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution