2 years ago

What do homologous structures, vestigial structures , and fossils provide evidence of?

Chemistry

1 answer:

antoniya [11.8K]2 years ago

6 0

This question is confusing to me.

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2A1 +3CL2, → 2AICI3 what is the reaction

DerKrebs [107]

Answer:

redox reaction

Explanation:

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2 years ago

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43 moles feci3 are dissolved in 0.64l of solution what is the molarity of the solution

nasty-shy [4]

Molarity=moles/liter
molarity=43/0.64
molarity=67.19moles/litre

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3 years ago

Of the groups below, which are the least chemically reactive?

seropon [69]

It is actually Group 3A elements. I just took the test.

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2 years ago

Given that Kp [NOTE: Kp!!!!] = 1.39 at 400 ºC for the reaction, P4(g) <=> 2 P2(g), which answer best describes the reactio

Igoryamba

Answer:

The reaction will proceed to the left to attain equilibrium.

Explanation:

The question is missing but I guess it must be about <em>how the reaction will proceed to attain equilibrium.</em>

First, we have to calculate the partial pressures using the ideal gas equation.

$pP_{4}=\frac{2.50mol\times (0.08206atm.L/mol.K)\times 673K}{25.0L} =5.52atm$

$pP_{2}=\frac{1.50mol\times (0.08206atm.L/mol.K)\times 673K}{25.0L}=3.31atm$

Now, we have to calculate the reaction quotient (Qp).

$Qp=\frac{pP_{2}^{2}}{pP_{4}} =\frac{3.31^{2} }{5.52} =1.98$

Since Qp > Kp, the reaction will proceed to the left to attain equilibrium.

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2 years ago

Which atom has the largest atomic radius

Greeley [361]

francium , in the Periodic table the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. making helium is the smallest element, and francium the largest.

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3 years ago