What mass of Chlorine (Cl2) must react with excess phosphorus to produce 230 kJ of energy? Use the periodic table at the top of this test for any molar mass.
2P + 5C12 —> 2PC15
H= -886 kJ

Predict the products butane (c4h10) + oxygen —>

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.