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In-s [12.5K]
2 years ago
8

BRAINIEST PLS HELPP

Chemistry
1 answer:
Akimi4 [234]2 years ago
4 0

Answer:

0.179kg/m3 hope that helps you out

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Calculate the vapor pressure at 35ºC of a solution made by dissolving 20.2 g of sucrose (C12H22O11)in 60.5 g of water. The vapor
sukhopar [10]

Answer:

P' = 41.4 mmHg → Vapor pressure of solution

Explanation:

ΔP = P° . Xm

ΔP = Vapor pressure of pure solvent (P°) - Vapor pressure of solution (P')

Xm = Mole fraction for solute (Moles of solvent /Total moles)

Firstly we determine the mole fraction of solute.

Moles of solute → Mass . 1 mol / molar mass

20.2 g . 1 mol / 342 g = 0.0590 mol

Moles of solvent → Mass . 1mol / molar mass

60.5 g . 1 mol/ 18 g = 3.36 mol

Total moles = 3.36 mol + 0.0590 mol = 3.419 moles

Xm = 0.0590 mol / 3.419 moles → 0.0172

Let's replace the data in the formula

42.2 mmHg - P' = 42.2 mmHg . 0.0172

P' = - (42.2 mmHg . 0.0172 - 42.2 mmHg)

P' = 41.4 mmHg

5 0
3 years ago
Type the correct answer in the box. Express your answer to two significant figures. An industrial vat contains 650 grams of soli
SashulF [63]

88.98 %

The Balance Chemical Equation is as follow,

                                  2 HCl + Pb(NO₃)₂     →    2 HNO₃ + PbCl₂

According to equation,

          331.2 g (1 mole) Pb(NO₃)₂ produces  =  278.1 g (1 mole) PbCl₂

So,

                 870 g of Pb(NO₃)₂ will produce  =  X g of PbCl₂

Solving for X,

                     X  =  (870 g × 278.1 g) ÷ 331.2 g

                     X  =  730.5 g of PbCl₂

Therefore,

               Theoretical Yield =  730.5 g

Also as given,

                Actual Yield =  650 g

So using following formula for percentage yield,

                        %age Yield  =  (Actual Yield / Theoretical Yield) × 100

Putting values,

                        %age Yield  =  (650 g / 730.5 g) × 100

                        %age Yield  =  88.98 %

Brianliest please and thank you.

4 0
3 years ago
The people in a coastal location are packing emergency supplies and evacuating their homes. Which of these statements best expla
Iteru [2.4K]

Answer:

They want to escape from the fury of a hurricane.

Explanation:

Your welcomeeeeeeeeeeeee

6 0
2 years ago
Read 2 more answers
Label A-F based on the table using C for concentrated and D for dilute. A 3-column table with 3 rows. Column 1 is labeled Acid s
stellarik [79]

Answer:

A) C

B) D

C) D

D) C

E) D

F) C

Explanation:

3 0
3 years ago
Read 2 more answers
Which is the strongest interparticle force in a sample of brf?<br><br> Kr<br> BrF<br> H2SO4
Serhud [2]

Answer:In a sample of BrF the strongest interparticle force is the dipole-dipole force.

While Kr is the dispersion force.

And H2SO4 is hydrogen bonding

Explanation:

Brf is polar with a known dipole moment of 1.4D,dipole - dipole force and dispersion force are both present,the dipole-dipole force is the strongest interparticle force action on Brf considering its high boiling points

The bond formed by Kr will be non polar due to greater atomic size and low electronegativity.The force of attraction between the non polar is the dispersion force which is the strongest.

H2SO4 has a great polarity with a very strong hydrogen bonding.

5 0
3 years ago
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