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3 years ago

Plz someone help me with this!

Chemistry

1 answer:

Genrish500 [490]3 years ago

4 0

4 is sound energy and electrical 5 is nuclear energy 5 is mechanical

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The metals in Groups 1A, 2A, and 3A ____.

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All of these metals from cations, so they lost electrons when forming ions. The answer is D.

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Which term describes the part of the periodic table that is arranged by increasing atomic number and repeats periodically?

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Answer:

period

Explanation:

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How many moles of AgCl will be produced from 60.0 g of AgNO3, assuming NaCl is available in excess?

Ivenika [448]

Answer: For this homework question, you’ll need to look up the molar mass of AgNO₃. Use this to calculate the number of moles in the sample.

Then note that silver is (quite usually) univalent, so there will be as many moles of AgCl as there were of AgNO₃.

Ask your instructor or tutor for more in-depth training, if need be. Good luck!

Explanation:

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3 years ago

At a high temperature, equal concentrations of 0.160 mol/L of H2(g) and I2(g) are initially present in a flask. The H2 and I2 re

Nikitich [7]

Explanation:

The given reaction is as follows.

$H_{2} + I_{2} \rightarrow 2HI$

Initial : 0.160 0.160 0

Change : -x -x 2x

Equilibrium: 0.160 - x 0.160 - x x

It is given that $[H_{2}]$ = [0.160 - x] = 0.036 M

and, $[I_{2}]$ = [0.160 - x] = 0.036 M

so, x = (0.160 - 0.036) M

= 0.124 M

As, [HI] = 2x.

So, [HI] = $2 \times 0.124$

= 0.248 M

As it is known that expression for equilibrium constant is as follows.

$K_{eq} = \frac{[HI]^{2}}{[H_{2}][I_{2}]}$

= $\frac{(0.248)^{2}}{(0.036)(0.036)}$

= 47.46

Thus, we can conclude that the equilibrium constant, Kc, for the given reaction is 47.46.

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3 years ago

A certain orbital of the hydrogen atom has n = 4 and l = 2 what are the possible values of ml for this orbital?

Nadya [2.5K]

The ml is also called as the magnetic quantum number. The value of ml can range from –l to +l including zero. Hence all of the possible values for ml given that l = 2 are:

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4 years ago