Answer:
Mg -atomic number 12
electronic configuration -1s² 2s² 2p^6 3s²
The 2 main waves is body waves & surface waves & Scientists<span> use waves to </span>study<span> the different </span>layers of the earth. Usually, they are <span>to determine the depths of layers. Geologists </span>use<span> these records to establish the structure of </span>Earth's interior<span>.</span>
Answer:
82.18% is the mass percentage of bromine in the original compound.
Explanation:
Mass of AgBr = 1.1166 g
Moles of AgBr =
According to reaction, 1 mole of AgBr is obtained from 1 mole of bromide ions , then 0.0059466 moles of AgBr will be formed from :
of bromide ions
Mass of 0.005939 moles of bromide ions :
0.0059466 mol × 79.90 g/mol = 0.4751 g
Mass of the sample = 0.5781 g
Mass percentage of bromine in sample :
82.18% is the mass percentage of bromine in the original compound.
C half life..............................
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