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qwelly [4]
2 years ago
11

From its atomic number of 15, it is possible to predict that the phosphorus atom has _____. 5 neutrons, 5 protons, and 5 electro

ns 30 neutrons 15 neutrons and 15 protons 8 electrons in its outermost electron shell 15 protons and 15 electrons
Chemistry
2 answers:
Archy [21]2 years ago
6 0
From its atomic number of 15, it is possible to predict that the phosphorus atom has <span>15 protons and 15 electrons. 
</span>Atomic number of an chemical element shows number og protons in that element. Because chemical elements are neutral charges, number of positive particles (protons) and negative particles (electrons) are the same.
lord [1]2 years ago
4 0

Answer:

The correct answer is :15 protons and 15 electrons.

Explanation:

Atomic number of an elements tells us total number of protons present in the an atom. And as we know that atom is an electrically neutral sphere so, atomic number also tells us about the total numbers of electron present in an atom of an element.

Atomic mass of an element tells us about the total number of neutrons and protons present in the nucleus of an atom.

Phosphorous has atomic number of 15 which means that in single phosphorus atom there are 15 protons and 15 electrons.

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Draw a structure containing only carbon and hydrogen that is a stable alkyne of five carbons containing a ring.
stepladder [879]

Answer:

                     Ethynylcyclopropane is the stable isomer for given alkyne.

Explanation:

                     In order to solve this problem we will first calculate the number of Hydrogen atoms. The general formula for alkynes is as,

                                                    CₙH₂ₙ₋₂

Putting value on n = 5,

                                                    C₅H₂.₅₋₂

                                                    C₅H₈

Also, the statement states that the compound contains one ring therefore, we will subtract 2 hydrogen atoms from the above formula i.e.

                      C₅H₈   ------------(-2 H) ---------->  C₅H₆

Hence, the molecular formula for given compound is C₅H₆

Below, 4 different isomers with molecular formula C₅H₆ are attached.

                                      The first compound i.e. ethynylcyclopropane is stable. As we know that alkynes are sp hybridized. The angle between C-C-H in alkynes is 180°. Hence, in this structure it can be seen that the alkyne part is linear and also the cyclopropane part is a well known moiety.

                                      Compounds 3-ethylcycloprop-1-yne, <u>cyclopentyne </u>and 3-methylcyclobut-1-yne are highly unstable. The main reason for the instability is the presence of triple bond in three, five and four membered ring. As the alkynes are linear but the C-C-H bond in these compound is less than 180° which will make them highly unstable.

5 0
2 years ago
The three aspects of the measuring process are units, systems, and instruments.
lawyer [7]

Answer:

the answer for that is false

4 0
1 year ago
Read 2 more answers
What type of bond joins the carbon atom to each of the hydrogen atoms? A molecule that consists of four hydrogen atoms and one c
Len [333]

Answer:

Explanation:

what is the questions??

4 0
2 years ago
When the epoxide 2-vinyloxirane reacts with lithium dibutylcuprate, followed by protonolysis, a compound A is the major product
pshichka [43]

Answer:

A --- (E)-oct-2-en-1-o1

B ----(E)-oct-2-enal

Explanation:

See the attached file for the structure.

8 0
2 years ago
The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in diethyl et
Molodets [167]

Answer:

Explanation:

The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is aspirin. Calculate the vapor pressure of the solution at 25 °C when 14.88 grams of aspirin, C9H8O4 (180.1 g/mol), are dissolved in 269.2 grams of diethyl ether. diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.

mol of C4H10O = mass of C4H10O / molar mass of C4H10O

= 242.1 g / 74.12 g/mol

= 3.266 mol

mol of C9H8O4 = mass of C9H8O4 / molar mass of C9H8O4

= 10.33 g / 180.1 g/mol

= 0.05736 mol

mole fraction of C4H10O,

X = mole of CHH1O0 / total mol

= (3.266)/(3.266 + 0.05736)

= 0.9827

now use:

P = Po*X

P = 463.57 * 0.9827

= 455.6 mm Hg

3 0
2 years ago
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