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Xelga [282]
3 years ago
14

Which of the following represents a stable octet? A 1s2 2s2 2p6 3s2 3p6 4s2

Chemistry
1 answer:
gregori [183]3 years ago
3 0
[Ne]3s^23p^6  ( answer D)   represent a sample of an octet. Octet  is the tendency   of  an atom  to have  eight  electrons  in the valence  shell.  [Ne]3s^2 3p^6   is an  octet   since  its  valence  electron   that is3s^23p^6  has eight  electrons.
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Metals expand when heated. if gold is heated, what will happen to its density?
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Analyzing Characteristics of Outer Planets
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The inhibition caused by the final end product of a reaction is called
Troyanec [42]

Answer:

Non competitive inhibition

Explanation:

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During enzymatic catalysis, the active sites could be occupied by the very same products' molecules turning out into an inhibition (the reaction starts to slow down since to active places are available for the reagents to react). Nonetheless this inhibition is not competitive as long as the product does not react due to the active sites it is occupying.

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5 0
3 years ago
Please help on both I apologize for the horrible quality
NemiM [27]

Answer:

Explanation:

1)

H₂SO₄:

Element (symbol)     No of atoms in         No of compounds        Total atoms

                                    1 molecule                   coefficient

H                                              2                            1                                 2

S                                               1                                                                1

O                                              4                                                               4

2)

2H₃PO₄:

Element (symbol)     No of atoms in         No of compounds        Total atoms

                                    1 molecule                   coefficient

H                                              3                            2                                 6

P                                               1                                                                2

O                                              4                                                                8

There are two mole of H₃PO₄. One mole contain 3 hydrogen atom, 1 phosphorus atom and 4 oxygen atoms. Thus in two mole of compound 6 hydrogen atoms, 2 phosphorus atom and 8 oxygen atoms are present.

4 0
3 years ago
A photon of light with a frequency of 2.74 x 1014 Hz collides with an electron. How much energy
sesenic [268]

Answer:

1.82x10⁻¹⁹Joules is the energy of the photon that is absorbed by the electron.

Explanation:

The energy of a photon is given by the equation:

E = h×ν

<em>Where E is energy of the photon in Joules.</em>

<em>h is Planck's constant (6.6262x10⁻³⁴Js)</em>

<em>And ν is frequency of the photon (In Hz = s⁻¹)</em>

<em />

The frequency of the photon is 2.74x10¹⁴Hz. That means its energy is:

E = 6.6262x10⁻³⁴Js × 2.74x10¹⁴s⁻¹

E =

<h3>1.82x10⁻¹⁹Joules is the energy of the photon that is absorbed by the electron</h3>

<em />

4 0
3 years ago
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