In 1897 the swedish explorer andree tried to reach the north pole in a balloon. the balloon was filled with hydrogen gas. the hydrogen gas was prepared from iron splints and diluted sulfuric acid. the reaction is given below. fe(s) + h2so4(aq) feso4(aq) + h2(g) the volume of the balloon was 4500 m3 and the loss of hydrogen gas during filling was estimated at 20.%. what mass of iron splints and 83% (by mass) h2so4 were needed to ensure the complete filling of the balloon? assume a temperature of 0°c, a pressure of 1.0 atm during filling, and 100% yield.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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