Jason took 6 hours to travel 540 km. For the first 140 km, he took 2 hours. What was his average speed during the first two hours? ___ km/h
How much distance did he cover in the last four hours of his journey? ___ km
What was his average speed for the rest of the journey? ___ km/h

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

Identify two types of chemical bonding in the source of dietary potassium

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?