According to this balanced chemical equation, what volume of C2H2 is required to form 40.0 L of CO2 ?

2C2H2 (g) + 502 (g) + 2H20 (g) + 4CO2 (g)

A. 20.0 L
B. 80.0 L
C. 44.8 L
D. 100 L

For each of the following mixtures decide if filtering would be suitable to separate the substances. explain your answers. oil in water sugar in water sand in water chalk in water tea leaves in a cup of tea

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.