Answer:
G° would be negative when temperatures are above 691K
Explanation:
G° could be found as:
G° = H° - TS°
As <em>H° = 98.8 kJ and S° = 143 J/K</em>; G° would be negative when H° < TS°, that is:
H° < TS°
98800J < 143 J/K ₓ T
691K < T
That means <em>G° would be negative when temperatures are above 691K</em>
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There are 6.02 × 10²³ formula units of CaCl2 in 111 g CaCl2. Details about formula units can be found below.
<h3>What is a formula unit?</h3>
Formula unit refers to the empirical formula of an ionic compound for use in stoichiometric calculations.
According to this question, there are 111g of CaCl2. The formula units can be calculated by multiplying the number of moles by Avogadro's number.
no of moles in CaCl2 = 111g ÷ 111g/mol = 1mol
Formula units of CaCl2 = 1mol × 6.02 × 10²³ = 6.02 × 10²³ formula units.
Therefore, there are 6.02 × 10²³ formula units of CaCl2 in 111 g CaCl2.
Learn more about formula units at: brainly.com/question/21494857
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Catalysts are used up during chemical reaction is the one statement among the following statements that is true about catalysts. The correct option among all the options that are given in the question is the third option or option "c". I hope the answer comes to your help.