Answer:
According to the definitions given, atomic mass which is also called atomic weight is the measured total mass of an element's atom. Whereas, atomic number is nothing but the total number of neutrons and protons in the nucleus of an atom....
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Answer is: precipitation requires fewer Ag⁺<span> ions in AgBr than in AgCl.
Chemical reactions:
Ksp(KBr) = 5,3</span>·10⁻¹³.
Ksp(KCl) = 1,8·10⁻¹⁰.
Ksp is <span>solubility product constant. The higher the Ksp value, substance is more soluble. KBr has lower Ksp, so it is easier to form precipitant of KBr than KCl.</span>
The reaction is endothermic as energy is absorbed to break a bond.
Answer : Option B) The molecules in the thermometer’s liquid spread apart.
Explanation : When a thermometer was placed in water to measure the water’s temperature. the molecules in the thermometer liquid which is often mercury spreads apart and rises, this shows a temperature increase in the thermometer.
