Elements can be chemically combined into compounds, therefore, a compound consists of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining atoms of their constituent elements by ionic bonds or by covalent bonds.
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Water releases energy during evaporation and condensation <span>Ocean water contains to much salt for people to drink
</span><span>Water releases energy during evaporation and condensation </span>
Answer:
A
Explanation:
I think this is true letter a
Answer:
positively charged
they are located in an atom in the nucleus
Explanation:
plato was right
Answer is: 1160 J of heat Is required to increase the temperature.
m(Fe) = 100 g.
∆T = 40,2 - 15 = 25,2°C.
C(Fe) = 0,46 J/g•°C.
Q = m(Fe) • C • ∆T.
Q = 100 g • 0,46 J/g•°C • 25,2°C
Q = 1160 J.
C - specific heat.