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Leokris [45]
1 year ago
13

Use Hess's law to calculate AG° rxn using the following information.

Chemistry
1 answer:
PIT_PIT [208]1 year ago
3 0

Answer:

AG rxn=+394.4 kJ

Explanation:

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Compare the compressibility of gases and liquids. Support your answer by describing the arrangement of particles in gases and li
Leokris [45]

Answer:

Gases are more compressible

Explanation:

The particles of gases have weak forces of attraction making them move in constant random motion making them easier to compress

6 0
3 years ago
I NEED HELP<br>Only the smallest particles of soil can be displaced by suspension because
Sidana [21]

Answer:

It's because they are easily carried by the wind.

<u><em>Hope I helped :)</em></u>

6 0
3 years ago
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Its silver tarnishing physical or chemical change.
Mrac [35]
Yes it is a chemical change because it is changing color which shows a chemical change, plus it changes into another element
3 0
3 years ago
Calculate the pH of a solution prepared by dissolving 0.150 mol of benzoic acid and 0.300 mol of sodium benzoate in water suffic
jok3333 [9.3K]

Answer : The pH of a solution is, 4.50

Explanation : Given,

K_a=6.30\times 10^{-5}

Concentration of benzoic acid (Acid) = 0.150 M

Concentration of sodium benzoate (salt) = 0.300 M

First we have to calculate the value of pK_a.

The expression used for the calculation of pK_a is,

pK_a=-\log (K_a)

Now put the value of K_a in this expression, we get:

pK_a=-\log (6.30\times 10^{-5})

pK_a=5-\log (6.30)

pK_a=4.20

Now we have to calculate the pH of buffer.

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[Salt]}{[Acid]}

Now put all the given values in this expression, we get:

pH=4.20+\log (\frac{0.300}{0.150})

pH=4.50

Thus, the pH of a solution is, 4.50

8 0
3 years ago
How many grams of N2 is needed to produce 2000 grams NH3?
BlackZzzverrR [31]

Answer:

1644 g

Explanation:

Step 1: Write the balanced equation

N₂ + 3 H₂ ⇒ 2 NH₃

Step 2: Calculate the moles corresponding to 2000 g of NH₃

The molar mass of NH₃ is 17.03 g/mol.

2000 g × 1 mol/17.03 g = 117.4 mol

Step 3: Calculate the moles of N₂ needed to produce 117.4 moles of NH₃

The molar ratio of N₂ to NH₃ is 1:2. The moles of N₂ needed are 1/2 × 117.4 mol = 58.70 mol

Step 4: Calculate the mass corresponding to 58.70 moles of N₂

The molar mass of N₂ is 28.01 g/mol.

58.70 mol × 28.01 g/mol = 1644 g

8 0
3 years ago
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