Tion is 7.2 23.116 Carbohydrates are compounds containing carbon,
hydrogen, and oxygen in which the hydrogen to
oxygen ratio is 2:1. A certain carbohydrate contains
40.0 percent carbon by mass. Calculate the empiri-
cal and molecular formulas of the compound if the
approximate molar mass is 178 g.

What is the number of atoms in 3.54 mol s

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.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?