Answer:
The correct answer is - the first object, the animal skull. The radiocarbon dating, also referred to as carbon -14 dating, is used for the determining of the age of an object containing organic matter based on the properties of the radiocarbon.
Explanation:
<h2>Answer:</h2>
Atoms of Cr in 0.86 mol of K2CrO4 = 0.86 × 6.02*10^23 = 5.177 * 10^23 atoms.
<h3>Explanation:</h3>
- One mol of K2CrO4 contains 6.02*10^23 molecules of K2CrO4.
- One K2CrO4 contains 1 atom of Cr.
- So 0.86 mol of K2CrO4 contain 0.86 * 6.02*10^23.
- Which is equal to 5.177 * 10^23 atoms.
7.64x10^3
I don’t know if this is right, I just solved it like it was math.
A strong electrolyte dissociates completely into its ions but in weak electrolyte only certain number of ions are dissociated so pH depends upon the dissociated ions.
Definition of pH
An evaluation of how basic a substance or solution is its pH is determined. pH is measured on a scale from 0 to 14. A pH value of 7 is considered to be neutral on this scale, which implies it is neither acidic nor basic. If the pH value is less than 7, it is considered to be acidic and if the pH value is greater than 7, it is considered to be basic.
pH < 7 for NH₃ and HClO₄ since the acid is strong acid and the base is weak base.
The pH value for NaOH and Benzoic acid is pH > 7, since the base is strong base and acid is a weak acid .
pH = 7 for HBr and KOH since both are strong acid and strong base
pH < 7 or pH > 7 since both are neutral.
Learn more about acids and bases from the given link given below.
brainly.com/question/28382743
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The appropriate response would be British physicist, Sir Joseph John Thomson OM PRS. He was an English physicist and Nobel Laureate in Physics, credited with the disclosure and known of the electron; and with the revelation of the main subatomic particle.
