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fredd [130]
3 years ago
13

If I have 0.75 moles of gas at a temperature of 105 K and a pressure of 3.75 atmospheres, what is the volume of the gas

Chemistry
1 answer:
gladu [14]3 years ago
8 0

Answer:

the volume is 20 just subtract

Explanation:

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3 years ago
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You have a 250. -ml sample of 1. 28 m acetic acid (ka = 1. 8 x´ 10–5). calculate the ph of the best buffer.
Nadya [2.5K]

The ph of the best buffer is 4.74

The given acetic acid is a weak acid

The equation of the pH of the buffer

pH = pKa + log ( conjugate base / weak acid ).

For best buffer the concentration of the weak acid and its conjugate base is equal.

pH = pKa + log 1

pH = pKa + 0

pH = pKa

given Ka = 1.8 × 10⁻⁵

pKa = - log ka

pH = -log ( 1.8 × 10⁻⁵ )

pH = 4. 74

Hence the pH of the best buffer is 4.74

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2 years ago
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Which will have the lowest boiling point between pure water, 0.5NacI, 1.0 NaCi or 2.0 NaCi?
Andru [333]

Answer:

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3 0
3 years ago
While doing a lab a student found the density of a piece of pure aluminum to be 2.85 g/cm3 the accepted value for the density of
____ [38]

Answer:

THE PERCENT ERROR IS 5.55 %

Explanation:

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Percent error = Found value - accepted value / accepted value * 100

Found value = 2.85 g/cm3

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Solving for the percent error, we have:

Percent error = 2.85 g/cm3 - 2.70 g/cm3 / 2.70 g/cm3 * 100

Percent error = 0.15 / 2.70 * 100

Percent error = 0.05555 * 100

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In conclusion, the percent error is 5.55 %

3 0
4 years ago
How many atoms of germanium<br> are present in a sample<br> containing 1.65 moles Ge?
otez555 [7]

Answer:

9.9363 x 10^23  atoms

Explanation:

1.65   x   Avagadro's Number

1.65 * 6.022 x 10^23 =

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2 years ago
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