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3 years ago

In chemical compounds, atoms like to have 8 electrons in their outer shell, this gives them __________.

Chemistry

2 answers:

tresset_1 [31]3 years ago

8 0

It's A
a. the electron configuration of a noble gas.

kolbaska11 [484]3 years ago

4 0

Elements try to attain their nearest noble configuration either by loosing or gaining electron(s). Hence option A.) the electron configuration of a noble gas is the correct answer. Hope this helps, have a great day/night ahead! :)

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For this device the liquid to be tested is drawn into the tube to a level above the top etched line. The time is then obtained f

N76 [4]

Answer:

The dynamic viscosity of the liquid is 0.727 kg/m*s

Explanation:

In the equation for that viscosimeter, ν = KR⁴t, the terms K and R are not dependent on the liquid that is being tested, unlike ν and t.

Using that equation and the data given in the problem, we can calculate the product of K and R⁴.

1.19*10⁻³m²/s = (KR⁴)* 1430 s

KR⁴=8,32*10⁻⁷m²/s²

We can now calculate the kinematic viscosity of the unknown liquid.

ν=8,32*10⁻⁷m²/s²*900s

ν=7.49*10⁻⁴m²/s

The relationship between the kinematic viscosity and the dynamic viscosity is given by the equation μ=ν * ρ, where μ is the dynamic viscosity and ρ is the density. Thus:

μ=7.49*10⁻⁴m²/s * 970 kg/m³

μ=0.727 kg/m*s

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3 years ago

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sugar dissolving in water was a good example of what kind of change? A. physical B. chemical C. Electical

Makovka662 [10]

Explanation:

A gas has a temperature of 100C at a pressure of 105atm. What is the temperature at 50 atm?

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3 years ago

Carbon tetrachloride has been widely used in the cleaning industry, in fire extinguishers, and as a refrigerant. Construct an ex

sesenic [268]

Answer: A) Nonmetal carbon shares valence electrons with each nonmetal chlorine forming four covalent bonds.

Explanation: Covalent bond is formed by sharing of electrons between atoms.

Ionic bond is formed by transfer of electrons between atoms.

Carbon with atomic no 6 and has configuration of $1s^22s^22p^2$ . Carbon has 4 valence electrons. It can only share electrons as it is difficult to gain or lose 4 electrons to complete it's octet.

Chlorine with atomic no 17 has configuration of $1s^22s^22p^3s^23p^5$ . It has 7 valence electrons and need one electron to complete its octet.

Thus carbon will share 4 electrons, one each with four chlorine atoms to form carbon tetra chloride.

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3 years ago

____________ are solutions that resist changes in ph when moderate amounts of acids or bases are added and contain ions or molec

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Buffers are solutions that resist changes in ph when moderate amounts of acids or bases are added and contain ions or molecules that react with oh- or h when these ions are introduced into solution.

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3 years ago

1. Diet and stress are mostly examples of which type of factors?

ella [17]

Here are the answers:
1) C
2) A

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3 years ago

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