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sukhopar [10]
3 years ago
7

The monomer of poly(vinyl chloride) has the formula C2H3Cl. If there are 1,565 repeat units in a single chain of the polymer, wh

at is the molecular mass (in amu) of that chain? Enter your answer in scientific notation.
Chemistry
1 answer:
monitta3 years ago
8 0

Answer:

\large \boxed{9.780 \times 10^{4}\text{ u}}

Explanation:

The molecular mass of a monomer unit is:

C₂H₃Cl = 2×12.01 + 3×1.008 + 35.45 = 24.02 + 3.024 + 35.45 = 62.494 u

For 1565 units,

\text{Molecular mass} = \text{1565 units} \times \dfrac{\text{62.494 u}}{\text{1 unit }} = \mathbf{9.780 \times 10^{4}}\textbf{ u}\\\\\text{The molecular mass of the chain is $\large \boxed{\mathbf{9.780 \times 10^{4}}\textbf{ u}}$}

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25.2 mL of water are placed in a graduated cylinder. A 22.6 g stone is dropped in, and the water level rises to 32.4 mL. Find th
VMariaS [17]
<span>Displaced volume :

final volume - initial volume

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Density = mass / volume

D = 22.6 g / 7.2 mL

D = 3.1388 g/mL

hope this helps!</span>
5 0
3 years ago
What is the minimum number of moles of potassium permanganate that would be required to completely oxidize 1.0 moles of benzalde
makvit [3.9K]
Mole ratio :

<span>5 C</span>₆<span>H</span>₆<span>CHO + 2 KMnO</span>₄<span> + 6 H</span>⁺ <span>= 5 C</span>₆<span>H</span>₆<span>COOH + 2 Mn</span>²⁺<span> + 3 H</span>₂<span>O + 2 K</span>⁺

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hope this helps!


7 0
3 years ago
Which has the lowest freezing point?
valkas [14]
E has indeed the lowest freezing point.
4 0
3 years ago
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80.0 grams of NaOH is dissolved in water to make a 6.00 L solution what is the molarity of the solution
Elanso [62]

Answer:

0.33 mol/ L

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer will help you. Have a nice day !

3 0
3 years ago
How many g of nacl do need to make 1.00L of 2.5% w/v solution of nacl in water?
iren2701 [21]
2.5 % w/v ( that means we have 2.5 grams of solute in 100 mL <span>solution )

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2.5 g ------------- 100 mL
?? --------------- 1000 mL

1000 x 2.5 / 100 => 25.0 g of NaCl</span>
7 0
3 years ago
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