Chemistry, 02.11.2019 04:31 caleelwittmann31
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.
Answers: 3
Chemistry, 22.06.2019 00:00, lukeakalucas
Alarge marble is dropped in a graduated cylinder with 35ml of water in it. the water level increases to 49ml. what is the volume of the marble
Answers: 1
Chemistry, 22.06.2019 11:30, claudr03
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.
Answers: 3
In 1897 the swedish explorer andree tried to reach the north pole in a balloon. the balloon was fill...
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