Chemistry, 02.09.2019 19:30 versaceblooper
The half-life of sodium-24 is 15.0 hours. what percentage of a sample of sodium-24 remains after 75.0 hours?
Answers: 1
Chemistry, 22.06.2019 11:30
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
Chemistry, 22.06.2019 13:20
Can someone me with 3 and 4 plz. this is for masteries test.
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Chemistry, 23.06.2019 03:30
The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?
Answers: 1
The half-life of sodium-24 is 15.0 hours. what percentage of a sample of sodium-24 remains after 75....
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