Which statement best describes the nucleus of an aluminum atom?
(1) it has a charge of +13 and is surrounded by a total of 10 electrons.
(2) it has a charge of +13 and is surrounded by a total of 13 electrons.
(3) it has a charge of –13 and is surrounded by a total of 10 electrons.
(4) it has a charge of –13 and is surrounded by a total of 13 electrons.

Can smoke be transformed into liquid or used as energy or both?

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1