Which of the following is not true for electric fields/lines?
a. electric fields always surround neutrons.
b. electric field lines around a negative charge point toward the
charge.
c. electric fields always surround positive charges.
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d. electric field lines are bent when charges interact.

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

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?

Gasoline has a density of 0.740 g/ml. if you have 328 grams of gasoline, what is the volume in milliliters?