djyoungfly6
Answered

Discover a world of knowledge at Westonci.ca, where experts and enthusiasts come together to answer your questions. Join our platform to get reliable answers to your questions from a knowledgeable community of experts. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of bromine? Hint - consider the mass of both atoms of bromine in your calculation. A.43% B.87% C.13% D.63%

Sagot :

samueladesida43

Answer:

B. 87%

Explanation:

First, we calculate the molecular mass of magnesium bromide (MgBr2) as follows;

MgBr2 = 24.3 + 79.9(2)

= 184.1g/mol

Since 1 atom of bromine contains 79.9g, then the mass of two atoms of bromine (Br2) is 79.9 × 2 = 159.8g

Hence, the percentage of bromine (Br2) in MgBr2 is calculated as follows:

% mass of Br2 = mass of Br2/ molecular mass of MgBr2 × 100

% mass of bromine = 159.8/184.1 × 100

% mass of bromine = 0.8680 × 100

% mass of bromine = 86.8%

Approximately, % mass of bromine is 87%

We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Stay curious and keep coming back to Westonci.ca for answers to all your burning questions.