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3 years ago

The electron configuration 1s2 2s22p6 3s23p6 represents which noble gas

Chemistry

2 answers:

vlada-n [284]3 years ago

7 0

electron configuration for the element is - 1s² 2s² 2p⁶ 3s² 3p⁶

the number of electrons in an atom is equal to the number of protons

number of protons in an atom of an element is called the atomic number and the atomic number is characteristic for the atom

the number of electrons in the atom can be calculated from the electronic configuration - 2 + 2 + 6 + 2 + 6 = 18

since electrons = protons

number of protons of the atom is 18

we have to check the periodic table to see which element has an atomic number of 18

Ar is the element with an atomic number of 18.

Ar is the noble gas with the given electronic configuration

lara [203]3 years ago

5 0

Argon would be the answer

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3 years ago

(20 pts] Provide the detailed mechanism of hydration of the following aldehyde in acidic solution. (You need to show all steps,

notsponge [240]

Answer:

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3 years ago

A 5-gal, cylindrical open container with a bottom area of 120 square inches is filled with glycerin and rests on the floor of an

aleksandrvk [35]

Answer:

a) 68.9 b/ ft²

b) 57.416

Explanation:

Volume of the cylindrical open container V = 5 gal

= (5)(231)

= 11155 in³

different diagrammatic expression has been shown in the attached file below for clear understanding.

Area A = 120 in²

V = hA

= $\frac{1155}{120}$

= 9.625 in

Upward acceleration , $a_z= 3ft/s^2$

$\frac{dp}{dz} = \rho (g + a_z)$

$dp= -\rho (g + a_z)dz$

$\int\limits^P}_0 \,dp= -\rho (g + a_z) \int\limits^0_h \, dz$

$P_b =$ $-\rho (g + a_z) h$

$= (2.4)*(32.2+3) (\frac{9.625}{12})$

= 68.9 b/ ft²

b) The flowchart for the resultant force is shown in the diagram below:

with that:

$F_f = P_bA$

$F_f =\frac{(68.9)(120)}{(144)}$

$F_f =57.416$

Thus, the resultant force that the container exert on the floor of the elevator during this acceleration = 57.416

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3 years ago

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I would say Frost Wedging because water must move, a physical act, and then in must freeze, also a physical act, and then the act of it freezing causes cracks known as frost wedging and that is definitely a physical act. Hope that helps!

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