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Nata [24]
3 years ago
12

Which of the following statements is true? The boiling point is higher for 100 liters of water than for 10 liters. During deposi

tion, a gas changes directly into a solid. The condensation points for oxygen and hydrogen are the same. All of the above.
Chemistry
2 answers:
mart [117]3 years ago
7 0

Answer:

During deposition, a gas changes directly into a solid

Explanation:

Mariulka [41]3 years ago
5 0

Answer:C.

Explanation:

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The atomic number of an atom is always equal to the number of its what ??
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The acid-dissociation constant for benzoic acid (C6H5COOH) is 6.3×10−5. Calculate the equilibrium concentration of H3O+ in the s
raketka [301]

Answer : The equilibrium concentration of H_3O^+ in the solution is, 2.1\times 10^{-3}M

Explanation :

The dissociation of acid reaction is:

                       C_6H_5COOH+H_2O\rightarrow H_3O^++C_6H_5COO^-

Initial conc.        c                                 0                0

At eqm.             c-x                                 x                x

Given:

c = 7.0\times 10^{-2}M

K_a=6.3\times 10^{-5}

The expression of dissociation constant of acid is:

K_a=\frac{[H_3O^+][C_6H_5COO^-]}{[C_6H_5COOH]}

K_a=\frac{(x)\times (x)}{(c-x)}

Now put all the given values in this expression, we get:

6.3\times 10^{-5}=\frac{(x)\times (x)}{[(7.0\times 10^{-2})-x]}

x=2.1\times 10^{-3}M

Thus, the equilibrium concentration of H_3O^+ in the solution is, 2.1\times 10^{-3}M

4 0
2 years ago
Which element would you expect to have properties similar to Chlorine (Cl)
jeyben [28]

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It's in the same group as chlorine.

5 0
3 years ago
What is the main difference between a homogeneous mixture and a heterogeneous mixture?
Sholpan [36]
The answer is <span>The components of a homogeneous mixture are evenly distributed.

In a homogeneous mixture, all components are evenly distributed. They are known as solutions. In a heterogeneous mixture, components are not evenly distributed. It consists of visibly different components. For example, milk is the homogeneous mixture, you cannot see its particles. But milk and cereals are the heterogeneous mixtures.</span>
7 0
3 years ago
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