poptropic7932
24.03.2021 •
Chemistry
9. Which of these substances have a higher specific heat, and why?
A. copper; hydrogen bonding
B. copper, metallic bonding
C. water; hydrogen bonding
D. water; metallic bonding
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Ответ:
C
Explanation:
water has the highest specific heat capacity of any liquid,as a hydrogen bond
Ответ:
Explanation:
The reaction between iron(III) oxide and aluminum produces aluminum oxide and iron. This reaction is known as a thermite reaction and is highly exothermic. The large amount of heat released is enough to melt oxygen and aluminum. The heat produced in the reaction melts the iron produced. In this reaction, iron(III) oxide loses oxygen to form iron - so iron(III) oxide is reduced. Carbon gains oxygen to form carbon dioxide - so carbon is oxidised.