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HACTEHA [7]
3 years ago
13

Gently boiling water had the ____ temperature as rapidly boiling water. What is the blank?

Chemistry
1 answer:
Dmitrij [34]3 years ago
6 0
Water always boils at 100˚C under atmospheric pressure so no matter how rapidly the water is boiling, it will always have the SAME temperature.
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What's reaction kinetics?<br>​
telo118 [61]

Answer: a branch of chemistry concerned with the rate of chemical reactions, the factors that influence these rates, and the use of rate studies to clarify reaction mechanisms

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1 year ago
The constant
Zigmanuir [339]

Answer:

75 kJ/mol

Explanation:

The reactions occur at a rate, which means that the concentration of the reagents decays at a time. The rate law is a function of the concentrations and of the rate constant (k) which depends on the temperature of the reaction.

The activation energy (Ea) is the minimum energy that the reagents must have so the reaction will happen. The rate constant is related to the activation energy by the Arrhenius equation:

ln(k) = ln(A) -Ea/RT

Where A is a constant of the reaction, which doesn't depend on the temperature, R is the gas constant (8.314 J/mol.K), and T is the temperature. So, for two different temperatures, if we make the difference between the two equations:

ln(k1) - ln(k2) = ln(A) - Ea/RT1 - ln(A) + Ea/RT2

ln (k1/k2) = (Ea/R)*(1/T2 - 1/T1)

k1 = 8.3x10⁸, T1 = 142.0°C = 415 K

k2 = 6.9x10⁶, T2 = 67.0°C = 340 K

ln(8.3x10⁸/6.9x10⁶) = (Ea/8.314)*(1/340 - 1/415)

4.8 = 6.39x10⁻⁵Ea

Ea = 75078 J/mol

Ea = 75 kJ/mol

4 0
2 years ago
WORTH 28 points MUST ANSER ALL 3 Easy POINTS
Vadim26 [7]
What question are you talking about?
3 0
3 years ago
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I think it’s gathering food or maintaining structure.
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How could you use the physical properties of melting and boiling point to identify a substance?
weeeeeb [17]

Answer:

Since the chemical composition of the substance stays the same, such as that of water in the above mentioned example, melting and boiling are physical changes. And hence, boiling points and melting points are physical properties. Since they are a property of the material, they can be used to identify it.

Explanation:

4 0
3 years ago
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