Answer:
D. It is extremely reactive.
Explanation:
Hello!
In this case, since potassium is an alkali metal, it is known those are extremely reactive because the energy required to ionize them is very low, it means they react so easily. For instance, even in the presence of water, potassium is able to react and form a purple flame as a product of the reaction:
As well as potassium, the rest of the elements belonging to the alkali metals series are extremely reactive; therefore the answer is D. It is extremely reactive.
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The rate constant is 4.84 * 10^11 s-1.
From the Arrhenius equation;
k = Ae^-Ea/RT
k = rate constant = ?
A = frequency factor = 4.99×1011 s−1
Ea = Activation energy = 86.4 kJ/mol
R = gas constant = 8.314 J/K/mol
T = Absolute temperature = 74.0 °C + 273 = 347 K
k = 4.99×10^11e^- 86.4/8.314 * 347
k = 4.84 * 10^11 s-1.
The rate constant is 4.84 * 10^11 s-1.
Learn more: brainly.com/question/626780
Answer:
See attached picture.
Explanation:
Hello,
In this case, given the IUPAC name, we can infer we have a seven-carbon carboxylic acid that has a bromine at the fifth carbon, an isopropyl at the fourth carbon and the carboxyl functional group (COOH) at the first carbon, thus, on the attached document, you will find the correct structure.
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Answer:
The hardness is more than 2.5. Hope this helps.
Answer:
Overview. A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. In empirical formulae, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, by ratios to the key element
Explanation: