I would say C. (2,3). If you input the values into the equation, it works out. If you put 2 in as x and y as 3, it’s 2 + 1 = 3 which obviously works. Also, if you plot the point (2,3) on the graph, the line intersects it.
According to the Gibbs Free Energy equation, some reactions only occur spontaneously at very high temperatures. At high temperatures, the reaction becomes spontaneous if both the entropy as well as the enthalpy are positive.
Changes in Enthalpy, Entropy, as well as Free Energy, Remember that such temperature in the Gibbs free energy equation would be the Kelvin temperature, and as such, it can only be positive. The reaction will constantly be spontaneous at any and all temperatures when H is negative and S is positive, and G's sign is going to be negative.
If a reaction happens without any outside influence, it has been said to as spontaneous. This reaction can release energy and only takes place in the specific circumstances.
Therefore, At high temperatures, the reaction becomes spontaneous if both the entropy as well as the enthalpy are positive.
To know more about spontaneous
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Answer:
Freezing T° of solution = - 7.35 °C
Explanation:
This is about the freezing point depression, a colligative property which depends on solute.
The formula is: Freezing T° pure solvent - Freezing T° solution = m . Kf . i
Freezing T° of pure solvent is -3.1°C
At this case, i = 1. As an organic compound the urea does not ionize.
We determine the molality (mol/kg of solvent)
We convert mass to moles:
12.3 g . 1mol / 60.06 g = 0.205 moles
0.205 mol / 0.3 kg = 0.682 mol/kg
We replace data in the formula:
-3.1°C - Freezing T° of solution = 0.682 mol/kg . 6.23 kg°C/mol . 1
Freezing T° of solution = 0.682 mol/kg . 6.23 kg°C/mol . 1 + 3.1°C
Freezing T° of solution = - 7.35 °C
The periodic trend of reactivity depends on whether the elements are metals or nonmetals. For metals, reactivity increases down a group and from right to left across a period. Nonmetals do the opposite. For nonmetals, reactivity increases up a group and from left to right across a period. Therefore, the rank is as follows:
Fluorine
Selenium
Neon
Hope this answers the question. Have a nice day.
At atmospheric pressure water boils at 100 degC.
So the water would be gas/vapor/steam.
