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IgorLugansk [536]
3 years ago
15

Copernicus believed the planetary motions were due to:

Chemistry
1 answer:
RSB [31]3 years ago
6 0

Answer:circular heliocentric orbits.

Explanation:

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Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other h
aleksandrvk [35]

Answer:

Concentration = 1.32 m

Boiling point = 83.44^{0}C

Explanation:

Let the boiling point of two solutions = T

Let the molal concentration of the two solutions= m

The relation between elevation in boiling point and molal concentration is:

elevationinboiling point=K_{b}Xmolality

i) For benzene

T-80.1=2.53Xm

T=2.53m+80.1 ....(1)

ii) For carbon tetrachloride

T-76.8=5.03Xm

T=5.03Xm+76.8 ...(2)

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5 0
3 years ago
The equilibrium constant, Kc, for the reaction N2O4(g)⇌2NO2(g) is 5.0×10−3. If the equilibrium mixture contains [NO2] = 0.050 M
Sergeu [11.5K]

Answer:

0.50 M is the molar concentration of N_2O_4.

Explanation:

The equilibrium constant of the reaction = K_c=5.0\times 10^{-3}

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Equilibrium concentration of NO_2 = 0.050 M

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[N_2O_4]= x

The equilibrium constant of the reaction is given aSL:

K_c=\frac{[NO_2]^2}{[N_2O_4]}

K_c=\frac{(0.050 M)^2}{x}=5.0\times 10^{-3}

x = 0.50 M

0.50 M is the molar concentration of N_2O_4.

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4 years ago
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