Sob condições apropriadas, acetileno, C2H2 e HCl reagem para formar
cloreto de vinila, C2H3Cl, que é usado para produzir o plástico
policloreto de vinila (PVC). A equação para a reação é:
C2H2 + HCl C2H3Cl
Numa reação, 35g de C2H2 são misturados com HCl. Quantos gramas
de C2H3Cl serão formados?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Particles vibrate in a rigid structure and do not move relative to their neighbors.