What mass of glucose (C6H12O6) should be dissolved in 12. 0 kg of water to obtain a solution with a freezing point of -5. 8 ∘C?.

Answers

Answer 1

Answer:

6.7 kg

Explanation:

(0) - (-5.8)= 5.8ºC

5.8 / 1.86 = 3.12 m C6 H12 O6

The molar mass of C6 H12 O6 is: 180.156 g/mol

3.12 * 12 kg * 180.156 g/mol = 6,745.041 g = 6.7 kg.

Answer 2

The mass of glucose solute dissolved in the solution is 6.739 Kg.

Recall that;

ΔT = K m i

ΔT = Freezing point depression

K =Freezing point depression constant = 1.86°C/mol

m = molality of the solution

i = Van't Hoff factor = 1 (molecular solution)

We have to find the freezing point depression from;

Freezing point depression = Freezing point of pure solvent - Freezing point of solution

Freezing point of pure water = 0°C

Freezing point of solution = -5. 8 ∘C

Freezing point depression = 0°C - (-5. 8 ∘C) = 5. 8 ∘C

Now;

m = ΔT/K i

m = 5. 8 ∘C/ 1.86°C/mol × 1

m = 3.12 m

But molality = number of moles of solute/mass of solvent in Kg

Molar mass of solute = 180 g/mol

Let the mass of solute be m

3.12 = m/180/12

3.12 = m/180 × 12

m = 3.12 × 180 × 12

m = 6739 g or 6.739 Kg

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yes that makes good sense good sir and i understand what you are talking about

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Answer:

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A normal fault is cause by a plates pulling away from each other, resulting in one side slipping down.

Explanation:

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The statement which best describes the difference between the first law of thermodynamics in comparison with the second law of thermodynamics is that: A. The first law describes how thermal energy is conserved but not the direction it moves.

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On the other hand, the Second Law of Thermodynamics states that the entropy (disorderliness) of an isolated system always increases and can never be decreased. Thus, the direction of an energy is described by the Second Law of Thermodynamics.

In conclusion, the difference between the First Law of Thermodynamics in comparison with the Second Law of Thermodynamics is that the first law describes how thermal energy is conserved but not the direction in which thermal energy moves.

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Answer:

A is the answer

Explanation:

This is for people who don't like reading long answers :)

~Hope it helps!

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Answers

Answer:

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Explanation:

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Answers

by learning from past mistakes

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Answers

Answer: 14.49 m/s

Explanation:  you would have to use  kinematic equations to solve for the original speed.

v^2 = v0^2 + 2 (a) (x)  where v = 0 since the car stopped

then you would get v0 = sqrt (2(a)(x))

plug in the known values

v0 = sqrt(2(3.50)(30.0))

v0 = 14.49 m/s

So the answer would be 14.49 m/s

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Answers

Answer:

conventional moral reasoning

Explanation:

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Answer:

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Explanation:

Answer:

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Answer:

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The person uses catfishing in order to appear as a better version of themselves by using a fake identity.

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Answers

Answer:

A: y=32,000(1.08x)

Explanation:

correct on edge <3

How will you make a cheer dance routine in a solo performance essay.

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Some of the essential skills which a graphic designer must possess in order to be a proficient, well-rounded designer includes:

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Answer:

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Creativity and communication abilities

Color usage that is appropriate

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With this in mind, we can see that a graphic designer must be able to properly communicate with his clients in order to get a good idea of what he would design for them, as well as be creative and come up with new, exciting ways to make designs.

Explanation:

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Answer:

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Explanation:

If a dog has 72 chromosomes how many chromosomes will each daughter cell have.

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Answer:

36

Explanation:

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Imagine that you are directing a production of Hamlet. Whom would you cast to play the role of Hamlet? an actor or actress who can deliver a diverse perspective of the character an actor or actress who does not stray from the script an actor or actress who mixes modern and classical interpretation of the plot an actor or actress who remains true to the setting and era in all forms.

Answers

The person that I will cast to play the role of Hamlet will be an actor or actress who remains true to the setting and era in all forms.

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a 250-kg crate is on a rough ramp, inclined at 30 degrees above the horizontal. The coefficient of kinetic friction between the crate and the ramp is 0.22. A horizontal force of 4222 N is applied on the crate, pushing it up the ramp

Answer:

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Explanation:

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Explanation:

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Answer:

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Answer:

Son

Explanation:

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Answers

Answer:

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Explanation:

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Answers

Woodrow Wilson was of the opinion that when it came to power over the b, Big Business had too much of it.

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The Federal Trade Commission Act Clayton Antitrust Act

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In conclusion, Wilson was against big business.

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Explanation:

on edge 2021

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Answers

The factor which affected the US economy during the 1970s is: A. stagflation

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Answers

basically they work out the finer details and set up guidelines for congress passed bills

Answer:

to help rebuild foreign nations after a natural disaster

Explanation:

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Answers

Answer:

Plastic materials do not decompose easily and most end up in the ocean where they can potentially harm animals. Some plastics also release carcinogens when burnt. By reducing its usage, we look for a more sustainable alternative to plastic materials. Reuse old plastic containers, bags, etc. if they can are still in good condition. Recycling will repurpose plastics that are no longer in proper condition to be used how it was originally intended to be.

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Answers

Answer:

4

Step-by-step explanation:

2 (6 x + 4) - 6 + 2 x = 3 (4 x + 3) + 1

12x + 8 - 6 + 2x = 12x + 9 + 1

12x + 2 + 2x = 12x + 10

2x + 2 = 10

2x = 10 - 2

2x = 8

x = 4

Predict the missing component of each reaction. ? 2 upper N a upper B r right arrow 2 upper N a upper C l plus upper B r subscript 2. HCl Cl2 Na HBr right arrow upper M g upper O plus upper H subscript 2. ? CHO C2H2 CO2 CO2 2H2O C 2H2O.

Answers

The given reactions are; First reaction is a displacement reaction, Second

reaction is the production of MgO and hydrogen gas.

1. The missing component is Cl₂.

2. The missing component is H₂O.

Reasons:

1. The given reaction can be presented as follows;

? + 2NaBr [tex]\longrightarrow[/tex] 2NaCl + Br₂

The above reaction has both 2 Na and 2 Br on the side of the reactants, and 2 Na, 2 Br, and 2 Cl on the side of the products, therefore

The missing component is Cl₂

2. The possible given reaction is presented as follows;

Mg + ? HBr [tex]\longrightarrow[/tex] MgO + H₂

The elements in the reactant side of the reaction are one Mg and unknown element (?)

The elements in the product side are one Mg one O and  two H

Therefore;

The the missing elements in the reactants are, 2 H and 1 O, which gives;

The missing component = H₂O

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Answer:

1- B

2- C

Explanation:

Peep the attachment, give the other guy props for giving me the idea

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