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julsineya [31]
3 years ago
9

Can a non-metal replace a metal in a single replacement reaction? If yes, is a non-metal always not able to replace a metal in a

single replacement reaction?
Chemistry
1 answer:
mylen [45]3 years ago
8 0

Non-metals will never replace metals or vice versa, they'll only replace itself or the only type of reaction that it is or element that it is.

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Explain why the quantum number set (2, 2, -1, -½) is not possible for an electron in an atom.
VashaNatasha [74]
Because if an electron was in an atom, it would allow two atoms to combine without exploding and disentigrating, therfore there would be no suck thing as nuclear fission (nuclear bomb)
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4 years ago
Which hybrid orbitals would be formed if one s orbital and three p orbitals combined?
LekaFEV [45]
<span>Atomic, Equal, Type.</span>
8 0
3 years ago
Read 2 more answers
An ideal gas is confined to a cylinder by a piston. The piston is slowly pushed in so that the gas temperature remains at 20 deg
HACTEHA [7]

Answer:

vhgbvbhdf

Explanation:

(a) It is given that the gas is ideal. Formula for change in entropy of the gas according to the first law of thermodynamics is as follows.

       \Delta U = dQ - dW

For isothermal process, \Delta U = 0 at constant temperature.

So,   \Delta U = dQ - dW

      0 = dQ - dW

or,       dQ = dW = 730 J

Now, according to the second law of thermodynamics the entropy change is as follows.

           \Delta S = \frac{dQ}{dT}

                        = \frac{730 J}{293.15 K}

                        = 2.490 J/K

Therefore, the entropy change of the gas is 2.490 J/K.

(b)  In the given process, at constant temperature the gas will be compressed slowly because then kinetic energy of the gas molecules will also be constant. The volume decreases so that the movement of molecules increases as a result, entropy of molecules will also increase.

This means that \Delta S = 2.490 J/K > 0

3 0
3 years ago
Uranium–232 has a half–life of 68. 9 years. A sample from 206. 7 years ago contains 1. 40 g of uranium–232. How much uranium was
ioda

Half-life can be given as the time required by the substance to reduce to half of its original concentration. The original mass of Uranium was 11.2 grams.

<h3>What is the expression of half-life?</h3>

The half-life for the reaction can be expressed as;

A_t=A_0(\dfrac{1}{2})^\dfrac{t}{t1/2}

Where the final mass of the product is, A_t=1.40\;\rm g

The time for the reduction is given as, t=206.7\;\rm years

The half-life of the compound is given as, t1/2=68.9\;\rm years

The original concentration (A_0) of the Uranium is given as,

\rm 1.40\;g=\textit A_0(\dfrac{1}{2} )^{\dfrac{206.7}{68.9}}\\\\1.40\;g= \textit A_0(\dfrac{1}{2} )^3\\\\\textit A_0=11.2\;\rm grams

The original mass of uranium-232 has been 11.2 grams.

Learn more about half-life, here:
brainly.com/question/24710827

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2 years ago
What type of matter is toluene
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Answer:

is an organic chemical conpond

5 0
3 years ago
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