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Papessa [141]
3 years ago
12

What is the hydronium ion concentration of a solution whose pH is 7.30

Chemistry
1 answer:
Assoli18 [71]3 years ago
6 0
[ H₃O⁺] = 10 ^ - pH

[ H₃O⁺ ] = 10 ^ - 7.30

[ H₃O⁺ ] = 5.011 x 10⁻⁸ M

hope this helps!
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A plane travels at 600 km/hr. How far will it travel in 3 hrs 15 min ?
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1950 km in 3 hrs 15 min
step-by-step explanation:
600 • 3.25
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f a cup of coffee is at 90°C and a person with a body temperature of 36°C touches it, how will heat flow between them?
coldgirl [10]

The heat flows between the two by the cup. The cup gives the coffee heat to the person and vise versa.

Hope this helps!

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What is energy conversion​
strojnjashka [21]

Answer:

Energy transformation,also known as energy conversion,is the process of changing energy from one form to another.

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For which of the following will the entropy of the system increase?
snow_lady [41]

Answer :  The correct option is, (d) sublimation of dry ice.

Explanation :

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The order of entropy will be,

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As we are moving from gaseous state to liquid state to solid state, the entropy will be decreases due to the decrease in the disorderedness.

(a) Condensation of steam.

Condensation : It is a type of process in which the phase changes from gaseous state to liquid state at constant temperature.

In this process, phase changes from gaseous state to liquid state that means the degree of disorderedness decreases. So, the entropy will also decreases.

(b) Reaction of magnesium with oxygen to form magnesium oxide.

Mg(s)+O_2(g)\rightarrow MgO(s)

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(d) Reaction of nitrogen and hydrogen to form ammonia.

N_2(g)+H_2(g)\rightarrow NH_3(g)

In this reaction, the randomness of reactant molecules are more (2 moles of gas) and as we move towards the formation of product the randomness become less (1 mole of gas) that means the degree of disorderedness decreases. So, the entropy will also decreases.

(d) Sublimation of dry ice.

Sublimation : It is a type of process in which the phase changes from solid state to gaseous state without passing through the liquid state at constant temperature.

In this process, phase changes from solid state to gaseous state that means the degree of disorderedness increases. So, the entropy will also increases.

3 0
3 years ago
I need help with everything
maria [59]
For the hypothesis put what you think will happen
6 0
3 years ago
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