2 years ago

What is the name of a solution whose concentration of solute is equal to the maximum concentration that

Chemistry

1 answer:

Travka [436]2 years ago

7 0

Answer:

Explanation:

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What two structures would provide a positive identification of a plant cell under a microscope? a)cell wall, mitochondria b)plas

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Cell wall, Large central vacuole, Chloroplasts

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A turtle moves at a speed of 1.0km/h. How fast is the turtle moving in meter per second

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The speed of the turtle is 9.41 centimeters per second.

Explanation:

Speed of small turtle = 566 furlong/fortnight

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Speed of small turtle in centimeter per seconds:

The speed of the turtle is 9.41 centimeters per second.

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Calculate the maximum amount of useful work that can be obtained and comment on the spontaneity for the reaction at 25C :

harkovskaia [24]

Answer:

$1.41 *10^{3} kJ/mol$

Explanation:

First, we find in the tables the ΔH of formation of each compound. As you can see in the (image 1)

Then we solve the ecuation for ΔH°reaction

ΔH°reaction=∑ΔH°f(products)−∑ΔH°f(Reactants)

ΔH°reaction= (-2* 393.5 - 2*285.8) - (52.4 + 0) kJ/mol

ΔH°reaction = -1.41 *10^3 kJ/mol

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2 years ago

6. The given mass of helium occupies

marin [14]

Answer:

V2 = 35.967cm^3

Explanation:

Given data:

P1 = 0.2atm

P2 = 1.4atm

V1 = 250cm^3

V2 = ?

T1 = 10°C + 273 = 283K

T2 = 12°C + 273 = 285K

Apply combined law:

P1xV1/T1 = P2xV2/T2 ...eq1

Substituting values:

0.2 x 250/283 = 1.4 x V2/285

Solve for V2:

V2 = 14250/396.2

V2 = 35.967cm^3

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