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2 years ago

What type of central-atom orbital hybridization corresponds to each electron-group arrangement:

Chemistry

1 answer:

skad [1K]2 years ago

5 0

the type of central-atom orbital hybridization corresponds to each electron-group arrangement:

trigonal planar

What is trigonal planar molecular geometry?

A trigonal planar molecular geometry model has one atom in the centre and three atoms at the corners of an equilateral triangle, known as peripheral atoms, all in the same plane.

All three ligands in an ideal trigonal planar species are identical, and all bond angles are 120°. Molecules with three ligands which are non-identical deviate from this idealised geometry.

The trigonal planar molecular geometry has 0 lone pairs. When there are 1 lone pair and 2 bond pairs present, the molecular geometry becomes bent or angular, whereas the electron geometry remains the same – trigonal planar.

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Describe the green house effect

eimsori [14]

Answer:

The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere. Radiatively active gases in a planet's atmosphere radiate energy in all directions.

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3 years ago

Calculate how many grams of hydrogen can be burned if 40. liters of oxygen at 200. k and 1.0 atm. show work pls.

Wittaler [7]

The grams of hydrogen gas can be burned if 40. liters of oxygen at 200. k and 1.0 atm is 4.88 grams.

<h3>How do we calculate grams from moles?</h3>

Grams (W) of any substance will be calculated by using their moles (n) through the following equation:

n = W/M, where

M = molar mass

And moles of the gas will be calculated by using the ideal gas equation as:

PV = nRT, where

P = pressure = 1atm

V = volume = 40L

n = moles = ?

R = universal gas constant = 0.082 L.atm / K.mol

T = temperature = 200K

On putting these values on the above equation, we get

n = (1)(40) / (0.082)(200) = 2.439 = 2.44 moles

Now grams of hydrogen gas will be calculated by using the first equation as:

W = (2.44mol)(2g/mol) = 4.88g

Hence required mass of hydrogen gas is 4.88g.

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7 0

3 years ago

Why does the dilution equation, M 1 V 1 = M 2 V 2, work?

valentina_108 [34]

Answer:

d) The dilution equation works because the number of moles remains the same.

Explanation:

Let’s say that you have 1 mol of a solute in I L of solution. The concentration is 1 mol·L⁻¹. and M₁V₁ = 1 mol.

Now, you dilute the solution to a volume of 2 L. You still have 1 mol of solute, but in 2 L of solution. The new concentration is 0.5 mol·L⁻¹.

The volume has doubled, but the volume has halved, and M₂V₂ = 1 mol.

b) Wrong. The molar concentration changes on dilution.

c) Wrong. The volume changes on dilution.

a) Wrong, although technically correct, because if the moles don’t change, the mass doesn’t change either. However, the formula M₁V₁ has units mol·L⁻¹ × L = mol. Thus, in the formula, it is moles that are constant.

6 0

4 years ago

Read 2 more answers

How does an increase in volume affect equilibrium

Irina18 [472]

Answer:

there will be more miles of reactants