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3 years ago

Delocalization which occurs through overlap between stigma and p orbitals

Chemistry

1 answer:

elixir [45]3 years ago

7 0

Answer:

Single covalent bonds that form between nuclei are created from the "head-to-head" overlap of orbitals and are called stigma (s) bonds. ... Another type of bond, a pi (p) bond is formed when two p orbitals overlap. Pi bonds are found in double and triple bond structures

Explanation:

Delocalization happens when electric charge is spread over more than one atom. For example, bonding electrons may be distributed among several atoms that are bonded together.

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A mixture of nitrogen and hydrogen gases, at a total pressure of 663 mm Hg, contains 3.46 grams of nitrogen and 0.156 grams of h

STALIN [3.7K]

Answer: The partial pressure of nitrogen gas is 405.76 mmHg and that of hydrogen gas is 257.24 mmHg

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

For nitrogen gas:

Given mass of nitrogen gas = 3.46 g

Molar mass of nitrogen gas = 28 g/mol

Putting values in above equation, we get:

$\text{Moles of nitrogen gas}=\frac{3.46g}{28g/mol}=0.123mol$

For hydrogen gas:

Given mass of hydrogen gas = 0.156 g

Molar mass of hydrogen gas = 2 g/mol

Putting values in above equation, we get:

$\text{Moles of hydrogen gas}=\frac{0.156g}{2g/mol}=0.078mol$

Mole fraction of a gas is calculated by using the formula:

$\chi_{A}=\frac{n_{A}}{n_{A}+n_{B}}$ ......(1)

For nitrogen gas:

Putting values in equation 1, we get:

$\chi_{\text{nitrogen gas}}=\frac{0.123}{0.123+0.078}=0.612$

For hydrogen gas:

Putting values in equation 1, we get:

$\chi_{\text{hydrogen gas}}=\frac{0.078}{0.123+0.078}=0.388$

The partial pressure of a gas is given by Raoult's law, which is:

$p_A=p_T\times \chi_A$ ......(2)

where,

$p_A$ = partial pressure of substance A

$p_T$ = total pressure = 663 mmHg

$\chi_A$ = mole fraction of substance A

For nitrogen gas:

$p_{\text{Nitrogen gas}}=663mmHg\times 0.612\\\\p_{\text{Nitrogen gas}}=405.76mmHg$

For hydrogen gas:

$p_{\text{Hydrogen gas}}=663mmHg\times 0.388\\\\p_{\text{Hydrogen gas}}=257.24mmHg$

Hence, the partial pressure of nitrogen gas is 405.76 mmHg and that of hydrogen gas is 257.24 mmHg

4 0

3 years ago

PLZZZ HELP MEEEE!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!

Alja [10]

Answer:

PV ∝ T

Explanation:

Charles’ law states that, at constant pressure, volume is proportional to

temperature. Gay-Lussac’s law states that, at constant volume, pressure is proportional to

temperature. Therefore, the product of pressure and volume is proportional to temperature.

This is also consistent with Boyle’s law, which states that pressure is inversely proportional

to volume when temperature is constant

Dis was easy as hell

4 0

3 years ago

Different enzymes that catalyze the same reaction are known as _____.

maw [93]

Answer:

Isozymes

Explanation:

Isozymes are enzymes that differ in amino acid sequence but catalyze the same chemical reaction. These enzymes usually display different kinetic parameters, or different regulatory properties.

7 0

3 years ago

Balance these equations :

vfiekz [6]

Answer:

H2+O2_____2H20
2/8 S8_____2S8O3
2HgO_____2Hg+O2
Zn+2HCl____ZnCl2+H2
2Na+2H2O___2NaOH+H2
C10H16+4Cl2___5C+8HCl
4Fe+3O2____2Fe2O3
C6H12O6+2O2___2Co2+2H2O
Fe2O3+3H2____2Fe+3H2O
2Al+3FeO____Al2O3+3Fe

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3 years ago

The kind of hazardous waste disposal that most clearly resemble recycling is

nydimaria [60]

that would be waste exchange

3 0

3 years ago