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jeka94
3 years ago
15

A certain chemical compound has a molar mass of 106.05 g/mol. Calculate the mass in grams of 2.58 moles of this compound.

Chemistry
1 answer:
tatuchka [14]3 years ago
7 0

Answer:

273.609

Explanation:

1 mole of a substance is equal to molar mass of the substance

1 mole of substance = 106.05

2.58 moles = x

then you cross multiply to get your answer

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A buffer solution is composed of 4.00 4.00 mol of acid and 3.25 3.25 mol of the conjugate base. If the p K a pKa of the acid is
Reika [66]

<u>Answer:</u> The pH of the buffer is 4.61

<u>Explanation:</u>

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

pH=pK_a+\log(\frac{[\text{conjuagate base}]}{[\text{acid}]})

We are given:

pK_a = negative logarithm of acid dissociation constant of weak acid = 4.70

[\text{conjuagate base}]} = moles of conjugate base = 3.25 moles

[\text{acid}]  = Moles of acid = 4.00 moles

pH = ?

Putting values in above equation, we get:

pH=4.70+\log(\frac{3.25}{4.00})\\\\pH=4.61

Hence, the pH of the buffer is 4.61

8 0
3 years ago
Consider the reaction 2 S + 3 O2 → 2 SO3 , which has a 75.1% yield. How much O2 is consumed if 583 g of SO3 are produced?
Ymorist [56]

Answer:

A/1.      10.9 mol O2

Explanation:

583 g x 1 mol SO3 x 3 mol O2 /

      80.057 g mol SO3 x 2 mol SO3

- You just need to find molar mass of SO3, which is 80.057 g.

- Everything else came from formula. Further explanation...

- Always start with what they give, such as 583 g. Then find 1 mol of what is being produced, in this it is SO3. We already found this because we did molar mass above. Next. find how many moles of what they want, which is O2. Look in equation and you can see 3 mol in from of O2. Next, do the same for SO3 and you can find 3 mol in front of that. Lastly, just do the math.

- If you need a further explanation or more help on any problems I would be happy to help, just let me know.

4 0
3 years ago
All of the Gathered in an investigation must be recorded. (Fill in the blank)
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The answer is "Incidents"
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Answer:

c

Explanation:

plants decrease the levels of carbon dioxide in the atmosphere due to the process of photosynthesis

6 0
2 years ago
The International Union of Chemistry (IUC) developed a specific set of rules for chemists to follow. What were these rules calle
vampirchik [111]

im just seeing something

sorry egnor me ok?

8 0
2 years ago
Read 2 more answers
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