HotWheels162000
01.02.2021 •
Chemistry
Which three elements have the most similar chemical properties?
1.
Ar, Kr, Br
2
K, Rb, Cs
3.
B, C, N.
4.
O, N, Si
Solved
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Ответ:
2.
Explanation:
Beacuse they are all group 1 metals. All have the same boiling, melting point and reactivity due to one electron in its outer shell.
Ответ:
212 degrees F, and 100 degrees C.
Explanation:
If the temperature is held constant (which requires some heat input, since evaporation cools things) the liquid will all evaporate. If the temperature is much above 212 F, the water will boil. That means that it wont just evaporate from the surface but will form vapor bubbles, which then grow, inside the liquid itself. :)