Calculate the reaction for the combustion of benzene, c6h6(l), from the data: 2 h2(g) + o2 (g) --> 2h2o(l) delta h= -572 kj c(s) + o2(g) --> co2(g) delta h= -394 kj 6c(s) + 3 h2(g) --> c6h6(l) delta h= +49 kj

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum