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3 years ago

Why reducing power of elements decrease, on moving from left to right in a period?

1 answer:

3 0

The atom or an ion which loses electron /electrons is called reducing agent.

Whole moving across a period from left to right metallic character decreases, therefore reducing power element decreases.

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Determine the number of moles of hydrogen atoms in each of the following.

pashok25 [27]

Answer:

$0.855molH$

Explanation:

Hello there!

In this case, according to the given information, it is possible for us to realize this problem is about mole ratios. Thus, for the compound C4H10, note there is a 1:10 mole ratio to the hydrogen atoms, that is why the number of moles of the latter is calculated as shown below:

$8.55x10^{-2} mol C_4H_{10}*\frac{10molH}{1molC_4H_{10}} \\\\=0.855molH$

Regards!

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3 years ago

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4 years ago

Kc for the reaction of hydrogen and iodine to produce hydrogen iodide.

tatiyna

Answer:

$[H_2]_{eq}=0.183M$

$[I_2]_{eq}=0.183M$

$[HI]_{eq}=0.025M$

Explanation:

Hello.

In this case, for this equilibrium problem, we first realize that at the beginning there is just HI, it means that the reaction should be rewritten as follows:

$2HI\rightleftharpoons H_2+I_2$

Whereas the law of mass action (equilibrium expression) is:

$Kc=\frac{[H_2][I_2]}{[HI]^2}$

That in terms of initial concentrations and reaction extent or change $x$ turns out:

$Kc=\frac{x*x}{([HI]_0-2x)^2}\\\\54.3=\frac{x^2}{(0.391M-2x)^2}$

And the solution via solver or quadratic equation is:

$x_1=0.183M\\\\x_2=0.210M$

Whereas the correct answer is 0.183 M since the other value yield a negative concentration of HI at equilibrium (0.391-2*0.210=-0.029M).This, the equilibrium concentrations are:

$[H_2]_{eq}=0.183M$

$[I_2]_{eq}=0.183M$

$[HI]_{eq}=0.391M-2*0.183M=0.025M$

Regards.

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3 years ago

How does your body help the musculoskeletal preform it’s function

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Explanation:

The musculoskeletal system provides form, support, stability, and movement to the body. It is made up of the bones of the skeleton, muscles, cartilage, tendons, ligaments, joints, and other connective tissue that supports and binds tissues and organs together. ... To allow motion, different bones are connected by joints.

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3 years ago

What is S plane???????

Mice21 [21]

Answer: the s-plane is the complex plane on which Laplace transforms are graphed. It is a mathematical domain where, instead of viewing processes in the time domain modeled with time-based functions, they are viewed as equations in the frequency domain

Explanation:

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