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VLD [36.1K]
4 years ago
13

Please help me!!! 12pts

Chemistry
2 answers:
Basile [38]4 years ago
8 0

The correct answer is "The objects have the same temperature."

If two objects are in thermal equilibrium both will have the same temperature. Heat flows from a hot to a cold body. Only in the absence of a thermal equilibrium, heat will flow from a body at a high temperature to a body at low temperature. As heat keeps flowing between the hot and cold bodies, finally both will achieve the same final temperature. This is when the two bodies are at thermal equilibrium .

Olenka [21]4 years ago
5 0

Answer: Option (c) is the correct answer.

Explanation:

When two substances does not exchange any energy with each other then they are said to be in thermal equilibrium with each other.

This means the temperature of both the substances will be equal, that is why, there is no exchange of energy between them.

Thus, we can conclude that when the objects have the same temperature then you can tell the two objects are in thermal equilibrium.

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What is the molarity of a solution of Cu2SO4 if 250.0 mL of solution contains 14.1 g of Cu2SO4?
balu736 [363]
Copper(I) compounds in aqueous solutions are unstable and disproportionate:
Cu₂SO₄ = Cu + CuSO₄
Necessary for dissolution of non-aqueous solvent.

M(Cu₂SO₄)=223.16 g/mol
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v=0.250 L

n(Cu₂SO₄)=m(Cu₂SO₄)/M(Cu₂SO₄)

c=n(Cu₂SO₄)/v=m(Cu₂SO₄)/(vM(Cu₂SO₄))

c=14.1/(0.250*223.16)=0.253 mol/L

0.253 M

5 0
3 years ago
Read 2 more answers
Consider the following reaction where Kc = 1.80×10-2 at 698 K:2 HI (g) H2 (g) + I2 (g)A reaction mixture was found to contain 0.
Iteru [2.4K]

Answer:

Answer for the given statements: (1) T , (2) F , (3) T , (4) F , (5) F

Explanation:

At the given interval, concentration of HI = \frac{0.304}{1}M=0.304M

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species inside third bracket represents concentrations at the given interval.

So, Q_{c}=\frac{(5.07\times 10^{-2})\times (4.57\times 10^{-2})}{(0.304)^{2}}=2.51\times 10^{-2}

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As Q_{c}> K_{c} therefore reaction must run in reverse direction to reduce Q_{c} and make it equal to K_{c}. That means HI(g) must be produced and H_{2} must be consumed.

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3 years ago
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Oksana_A [137]
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4 years ago
I need help.connect now
olya-2409 [2.1K]
And the help is.....?!
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