This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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You're on a roll — 6. b) Calculate the relative atomic mass of element X. The relative atomic mass (Ar) is calculated using the mass numbers and abundances of its isotopes. Given: Isotope X₁: mass number = 35, abundance = 75% Isotope X₂: mass number = 37, abundance = 25% Step 1: Use the formula for relative atomic mass. Ar = (mass number of isotope 1 × abundance of isotope 1) + (mass number of isotope 2 × abundance of isotope 2)100 Step 2: Substitute the given values into the formula. Ar = ((35 × 75) + (37 × 25))/(100) Step 3: Perform the multiplication. Ar = (2625 + 925)/(100) Step 4: Perform the addition. Ar = (3550)/(100) Step 5: Perform the division. Ar = 35.5 The relative atomic mass of element X is 35.5. 7. a) ii) Define: Mass number The mass number is the total number of protons and neutrons in the nucleus of an atom. Got more? Send 'em!