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Vlad [161]
3 years ago
15

A student notices that after two chemicals are mixed together the temperature of the mixture is higher than the temperature of t

he individual chemicals. What type of process must have occurred?
a) exothermic
b) isothermic
c) endothermic
Chemistry
1 answer:
swat323 years ago
7 0

Answer: exothermic

EXPLANATION: any process in which heat energy is released is called an exothermic process. For example burning of wood produces heat, so combustion of wood is an exothermic process.

When chemicals were not mixed they were at room temperature and when we mix them exothermic reaction took place and heat was released which raised the temperature of mixture.

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Rudik [331]

The correct  unabbreviated electron configuration  is as below


Vanadium - 1S2 2S2 2P6 3S2 3p6 3d3 4s2

Strontium -  1s2 2S2 2P6 3S2 3P6 3d10 4S2 4P6 4S2

Carbon =1S2 2S2 2P2


<u><em> Explanation</em></u>

vanadium  is in atomic number  23  in the periodic table  hence its electron configuration is 1s2 2s2 2p6 3s2 3p6 3d3 4s2

Strontium is in atomic number 38  in periodic table  hence  its electron configuration is 1s2 2s2 2p6 3s2 3p6 3d10  4s2 4p6 4s2

Carbon is in atomic number 6 in periodic  table  therefore its electron configuration is 1s2 2s2 2p2

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3 years ago
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