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4 years ago

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Unlike the nervous system, the endocrine system ___ A) Responds quickly B) Does not respond C) Rarely responds D) Responds Slowl

y

1 answer:

valentina_108 [34]4 years ago

3 0

D) Responds slowly

Good luck. It responds slower them the nervous system

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An ideal gas contained in 5.0 liter chamber at a temperature of 37°C. If

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4 years ago

Is a freshly squeezed grapefruit a solution or a mechanical mixture?

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3 years ago

Plants remove which greenhouse gas from the atmosphere?

sineoko [7]

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Question: <span>Plants remove which greenhouse gas from the atmosphere?

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3 years ago

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Initially, 0.65 mol of PCl5 is placed in a 1.0 L flask. At equilibrium, there is 0.15 mol of PCl3 in the flask. What is the equi

borishaifa [10]

Answer : The equilibrium concentration of $PCl_5$ is, 0.50 M

Explanation : Given,

Initial moles of $PCl_5$ = 0.65 mole

Volume of solution = 1.0 L

Moles of $PCl_3$ at equilibrium = 0.15 mole

The balanced equilibrium reaction will be,

$PCl_5\rightleftharpoons PCl_3+Cl_2$

Initial moles 0.65 0 0

At eqm. (0.65-x) x x

Moles of $PCl_3$ at equilibrium = x = 0.15 mole

Moles of $Cl_2$ at equilibrium = x = 0.15 mole

Moles of $PCl_5$ at equilibrium = (0.65-x) = (0.65-0.15) = 0.50 mole

Now we have to calculate the concentration of $PCl_3,Cl_2\text{ and }PCl_5$ at equilibrium.

Formula used : $Concentration=\frac{Moles}{Volume}$

$\text{Concentration of }PCl_3=\frac{\text{Moles of }PCl_3}{\text{Volume of solution}}=\frac{0.15mole}{1.0L}=0.15M$

$\text{Concentration of }Cl_2=\frac{\text{Moles of }Cl_2}{\text{Volume of solution}}=\frac{0.15mole}{1.0L}=0.15M$

$\text{Concentration of }PCl_5=\frac{\text{Moles of }PCl_5}{\text{Volume of solution}}=\frac{0.50mole}{1.0L}=0.50M$

Therefore, the equilibrium concentration of $PCl_5$ is, 0.50 M

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4 years ago

A horizontal row of the periodic table is usually referred to as a ____________

zaharov [31]

the answer is period

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4 years ago

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