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3 years ago

Which two elements have the same ground-state electron configuration?

Chemistry

1 answer:

Neporo4naja [7]3 years ago

3 0

Answer:

Cl (Chlorine) and Ar (Argon) have the same ground-state electron configuration.

Explanation:

Hope this helped

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Is a diamond a homogeneous or heterogeneous mixture?

Ivanshal [37]

Answer:

It's a heterogeneous mixture.

Explanation:

Diamond is made of just one element: carbon. Each carbon atom in diamond is connected to four other carbon atoms, in a crystal that extends on and on. There are other forms of pure carbon where the atoms are bonded differently, notably charcoal and graphite.

7 0

4 years ago

Read 2 more answers

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faust18 [17]

Answer:

CO2 & H2O

Explanation:

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3 years ago

What is the mean free path for the molecules in an ideal gas when the pressure is 100 kPa and the temperature is 300 K given tha

sladkih [1.3K]

Answer:

The mean free path = 2.16*10^-6 m

Explanation:

Given:

Pressure of gas P = 100 kPa

Temperature T = 300 K

collision cross section, σ = 2.0*10^-20 m2

Boltzmann constant, k = 1.38*10^-23 J/K

To determine:

The mean free path, λ

Calculation:

The mean free path is related to the collision cross section by the following equation:

$\lambda =\frac{1}{n\sigma }------(1)$

where n = number density

$n = \frac{P}{kT}-----(2)$

Substituting for P, k and T in equation (2) gives:

$n = \frac{100,000 Pa}{1.38*10^{-23} J/K*300K} =2.42*10^{25}\ m^{3}$

Next, substituting for n and σ in equation (1) gives:

$\lambda =\frac{1}{2.42*10^{25}m^{-3}* .0*10^{-20}m^{2}}=2.1*10^{-6}m$

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3 years ago

Which quantity will increase if the temperature is raised?

Irina-Kira [14]

OD.......................

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3 years ago

What is the shape of a molecule containing three covalent bonds with one unshared pair?

Schach [20]

pyramidal, if you have a molecule kit, i would strongly recommend watching a video of someone using a kit explaining the different shapes and following along. It helps a lot!

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3 years ago