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Alona [7]
3 years ago
5

"All is strange and vague."

Chemistry
2 answers:
MrRissso [65]3 years ago
5 0

Answer:

WHERE YOU AT

Explanation:

TPAT

AveGali [126]3 years ago
4 0

Answer:

This is Ohio.

Explanation:

(no dude im dead i live in kentucky XP)

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What is the hypothetical van't Hoff factor of magnesium nitrate, Mg(NO3)2?
vovangra [49]

Answer:

The hypothetical van't Hoff factor of magnesium nitrate,Mg(NO_3)_2 is <u>3 .</u>

Explanation:

Lets calculate -

Mg(NO_3)_2\rightarrow Mg^2^+ +2NO_3^-

We know that ,

i=\alpha n+(1-\alpha )

Dissociation should be 100% for the hypothetical vant hoff factor , that is

\alpha =1 and n=3 for  Mg(NO_3)_2

Therefore , putting the given values ,

i=1\times3+(1-1 )

i=3+0

i=3

<u>Hence , the answer is 3.</u>

4 0
3 years ago
If 200 g of benzoyl peroxide are used with 38 Kg of PTFE monomer, calculate the expected molecular weight of the polymer if (i)
den301095 [7]

Explanation:

The molecular weight of benzoyl peroxide is 242.23 g/mol.

Therefore, number of moles present in 200 g of benzoyl peroxide are as follows.

            No. of moles = \frac{mass}{\text{molar mass}}

                                  = \frac{200 g}{242.23 g/mol}

                                  = 0.825 mol

Molecular weight of PTFE is 100 g/mol.Hence, calculate the number of moles of PTFE in 38 kg as follows.

As 1 kg = 1000 g. So, 38 kg = 38000 g.

             No. of moles = \frac{mass}{\text{molar mass}}

                                  = \frac{38000 g}{100 g/mol}

                                  = 380 mol

As it is given that the initiator is 15% active. So, actual number of moles of benzoyl peroxide are as follows.

                        0.15 \times 0.826

                           = 0.124 mol

For combination, 1 mol of benzoyl peroxide produces 1 chain. Therefore, degree of polymerization will be calculated as follows.

                    DP = \frac{380 mol}{0.124 mol}    

                          = 3065.33 mol

Average molecular weight of monomer is as follows.

       \frac{0.124}{0.124 + 380} \times MW_{benzoyl} + \frac{380}{0.124 + 380} \times MW_{PTFE}

       = 100.05 g/mol

Therefore, calculate the expected molecular weight of polymer as follows.

                   3065.33 \times 100.05 g/mol

                     = 306675.23 g/mol

Hence, for disproportion 1 mole benzoyl peroxide produces 2 chains.

                     DP = \frac{2 \times 380}{0.124}

                           = 6129.03

Therefore, calculate the expected polymer weight as follows.

                     6129.03 \times 100.05

                   = 613209.68 g/mol

Thus, we can conclude that the the expected polymer weight is 613209.68 g/mol.

6 0
3 years ago
What quantity of potassium phosphate, in grams, is required to prepare 500.0 ml of solution where you the concentration of potas
Readme [11.4K]

Answer: 3.54

Explanation:

You're forgetting to divide by 3 for the 3 moles of potassium that are in potassium phosphate.

Potassium Phosphate= K3PO4

3 0
3 years ago
In equation δhsoln=δh1+δh2+δh3 which of the energy terms for dissolving an ionic solid would correspond to the lattice energy?
LekaFEV [45]
The dissolution of a solute in a solvent to form a solution usually occur in three steps, which are delta H1, delta H2 and delta H3. 
For dissolving an ionic solid, the lattice energy, which is the energy that is holding the ionic particles in place correspond to DELTA H2 and it is the energy that must be conquered. The higher the charge in the ionic solid, the higher the lattice energy. The lattice energy must be overcome in order for the solid to dissolve.
4 0
3 years ago
Which of the following is usually done last in the scientific method of investigation?
Kitty [74]
The answer is C because you must do all the other things first to get to the that’s part hope that helps
8 0
3 years ago
Read 2 more answers
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