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General Chemistry 2

General Chemistry 2

Q 1.What length of a cylindrical piece of tungsten wire having a radius of 3.79 mm has a mass of 39.7 g? The density of tungsten is 19.25 g/cm3 and Volume = ?r2h. 2.What is the ground-state electron configuration of nitrogen (N)? 3.What is the molarity of an NaI solution that contains 5.3 g of NaI in 41 mL of solution? 4. Calculate the number of moles in 0.48 g of copper. 5.What is the correct formula for calcium nitrate?

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1.4.57 × 10–2 m 2.[He]2s22p3 3.0.86 M