Acetylene (C2H2) reacts with oxygen (O2) to produce water and carbon dioxide (CO2). How many grams of carbon dioxide are produced when 12.5 grams of acetylene are reacted?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Consider the story you just read. all but one of the choices below indicate that something is living.

You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use