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3 years ago

7

a student is studying the ways different elements are similar to one another diagrams of atoms from four different elements are

shown below which two atoms are elements in the same group in the periodic table

1 answer:

UNO [17]3 years ago

4 0

Answer:

jkkk jkoi

Explanation:

ukl

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As the movement of molecules within a substance increases, describe the change in heat of the substance. Justify your response i

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3 years ago

Balance the following equations: (c) H2(g)+I2(s)⟶HI(s)H2(g)+I2(s)⟶HI(s)

kenny6666 [7]

Answer: $H_2(g)+I_2(g)\rightarrow 2HI(s)$

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Thus in the reactants, there are 2 atoms of hydrogen and 2 atoms of iodine .Thus there has to be 2 atoms of hydrogen and 2 atoms of iodine in the product as well. Thus a coefficient of 2 is placed in front of HI.

The balanced chemical reaction is:

$H_2(g)+I_2(g)\rightarrow 2HI(s)$

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