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aliina [53]
3 years ago
8

How many moles of NH3 are there in 77.5 g of NH3?

Chemistry
1 answer:
Vanyuwa [196]3 years ago
4 0

Answer:

4.6 (Rounded)

Explanation:

Given: 77.5g of NH3

<u>77.5g of NH3</u>

         1

Plug in your units.

<u>77.5g of NH3</u>    x    <u>         mol of NH3  </u>

         1                                g of NH3

Since we are using grams, find the mass of NH3. To save you time, I'll tell you. It's 17.03052.

Now, plug is number into the equation with 1 on the top because you are trying to find 1 moles worth.

<u>77.5g of NH3</u>    x    <u>     1    mol of NH3  </u>

         1                     17.03052g of NH3

Now solve by multiplying the numbers across.

<u>    77.5x1    </u>    = <u>    77.5    </u>   = 4.55065377.

1x17.03052      17.03052

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Answer:

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Read 2 more answers
Propanoic acid, ch3ch2cooh, has a pka =4.9. draw the structure of the conjugate base of propanoic acid and give the ph above whi
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Conjugate base of Propanoic acid (CH_{3}CH_{2}COOH is propanoate where -COOH group gets converted to -COO^{1-}. The structure of conjugate base of Propanoic acid is shown in the diagram.

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8 0
3 years ago
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Answer: The molecular mass of this compound is 131 g/mol

Explanation:

Depression in freezing point:

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where,

\Delta T_f = depression in freezing point  = 3.9^oC

k_f = freezing point constant  = 20.8^0C/m

m = molality

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M_2 = molar mass of solute = ?

Now put all the given values in the above formula, we get:

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Therefore, the molar mass of solute is 131 g/mol

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