C2H6 + O2 -> CO2 + H2O. How many moles of O2 are required to react completely with 3.2 moles of C2H6

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

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.