There are three naturally occurring isotopes of magnesium: 24
12Mg, 25
12Mg, and 26
12Mg. In
a weird parallel universe, the percentages of
these isotopes are
Magnesium Natural
Isotopes Abundance
24
12Mg / 43.1%
25
12Mg / 19%
26
12Mg / 37.9%

You can assume the masses are equal to the
mass number. Calculate the weight of “naturally” occurring magnesium in this weird
parallel universe.
Answer in units of g/mol. Your answer
must be within ± 0.015%

Heat energy, carbon dioxide, and water are released through which process? a. photosynthesis b. depolymerization c. digestion d. cellular respiration

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.