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IgorLugansk [536]

3 years ago

12

When testing for hydrogen gas in the laboratory a glowing splint is inserted into the gas which results in a pop sound. What is

associated with the formation of the pop sound?
A. physical change
B. chemical change
C. exothermic reaction
D. endothermic reaction

1 answer:

Advocard [28]3 years ago

5 0

C. Exothermic reaction I guess

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A sample of a pure compound that weighs 60.3 g contains 20.7 g Sb (antimony) and 39.6 g F (fluorine). What is the percent compos

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<u><em>The percent composition of fluorine is 65.67%</em></u>

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