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ultimatesaiyan
15.01.2020 •
Chemistry
Which of the following is not an alloy?
a. brass
b. steel
c. tungsten
d. bronze
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Ответ:
Tungsten is an element, making it a pure substance. Alloys are mixtures of two or more metals. Brass is an alloy of copper and zinc. Steel is an alloy of iron and carbon. Lastly, bronze is an alloy of primarily copper, tin, and other metals.
Ответ:
In the first balloon when the balloon gets warm the molecules begin to distribute to the wall of the balloon and the balloon will burst because of the tension caused. In the second case when the balloon gets cold the molecules will attract each other then the balloon will contract because of the attraction of the molecules in the balloon.