Calculate each of the following for the hydrated 'compound':           Mg5Al4(P3Se7)3⋅⋅6H2O NA = 6.022 x 1023 a. What is the mass percent of phosphorus in the hydrated 'compound' reported to 4 significant figures?  % b. How many magnesium ions are in 753.0 micrograms of the hydrated 'compound'?  magnesium ions

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.