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3 years ago

How many chlorine aHow many chlorine atoms are there in 4 molecules of CH2Cl2?

Chemistry

1 answer:

timurjin [86]3 years ago

8 0

If there is 4 of CH2CI2, then there is 8 of CI. There is already 2 in each one and there is 4 sets so 2x4=8

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3 years ago

Calculate the unit cell edge length for an 87 wt% Ag- 13 wt% Pd alloy. All of the palladium is in solid solution, and the crysta

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Answer:

Explanation:

Since the crystal structure is FCC , every unit cell will have 4 atoms . If a be the edge length

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3 years ago

Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050-M solution of trichl

Nataly [62]

Answer:

Ka = 0.16

Explanation:

HClO₄ is a strong acid and it will dissociate completely to give hydrogen ion and the conjugate base.

The pH of HClO₄ will be calculated as:

pH = -log[H⁺]

pH = -log[0.04] = 1.4

The trichloroacetic acid is a weak acid and it will not dissociate completely.

The dissociation will be:

$CCl_{3}COOH---> CCl_{3}COO^{-} + H^{+}$

Initial 0.05 0 0

Change -x +x +x

Equilibrium 0.05-x x x

Ka = $\frac{[H^{+}][ClO_{4}^{-}]}{[HClO_{4}]}$

As pH of the acid = 1.4 it means the concentration of hydrogen ion is 0.04.

Therefore

x = 0.04

Putting values

Ka = $\frac{(0.04)(0.04)}{0.05-0.04}=0.16$

6 0

3 years ago