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2 years ago

If a collision between molecules is very gentle the molecules are

1 answer:

6 0

If collision between molecules is very gentle the molecules are more likely to bound without reaction

collision is process in which molecules come together or collide with one another.Molecules must collide with sufficient energy so that chemical bond can break. In addition for collision to occur there must have favorable orientation.

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How can chemistry help you make wiser decisions and be a better consumer?

Cloud [144]

<span>While we take for granted that the first step towards feeling improved is getting a diagnosis and prescription. If there are choices that could make to reduce the strength of our diet is the opening of brain chemistry. It is our body be able to only make.</span>

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2 years ago

Given the following reactions Fe2O3 (s) + 3CO (s) → 2Fe (s) + 3CO2 (g) ΔH = -28.0 kJ 3Fe (s) + 4CO2(s) → 4CO (g) + Fe3O4(s) ΔH =

Taya2010 [7]

Answer: The enthalpy of the reaction is -109 kJ

Explanation:

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

$Fe_2O_3(s)+3CO(s)\rightarrow 2Fe(s)+3CO_2(g)$ $\Delta H=-28.0kJ$ $\times 3$

$3Fe_2O_3(s)+9CO(s)\rightarrow 6Fe(s)+9CO_2(g)$ $\Delta H=-84.0kJ$ (1)

$3Fe(s)+4CO_2(s)\rightarrow 4CO(g)+Fe_3O_4(s)$ $\Delta H=+12.5kJ$ $\times 2$

$6Fe(s)+8CO_2(s)\rightarrow 8CO(g)+2Fe_3O_4(s)$ $\Delta H=+25.0kJ$ (2)

The final reaction is:

Subtracting (2) from (1):

$3Fe_2O_3(s)+CO(g)\rightarrow CO_2(g)+2Fe_3O_4(s)$ $\Delta H=-84.0-(+25.0)=-109kJ$

Thus the enthalpy of the reaction is -109 kJ

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2 years ago

What does the number represent in the isotope platinum-194?

vazorg [7]

The number in isotope platinum-194 stands for the <em>total </em>amount of protons and neutrons. In other words, this is the mass. =)

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2 years ago

Table salt (NaCl) is a compound. Every molecule of table salt has the same properties as every other molecule of table salt beca

Fiesta28 [93]

Table salt (NaCl) is a compound. Every molecule of table salt has the same properties as every other molecule of table salt because they all have one sodium (Na) atom and one chlorine (Cl) atom. This is referred to as fixed composition.

Hope this helps! Please correct me if I'm wrong :)

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2 years ago

balance the following reaction using LCM method by showing each steps Pb (N3)2 + Cr(MnO4)2  Cr2O3 + MnO2 + Pb3O4+ NO

blsea [12.9K]

here's the answer to your question

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1 year ago