@X@user.full_name@X@ @GMU: A compound contains only magnesium and astatine. A sample weighing 52.1 g of this compound contained 2.85 g of magnesium. How many grams of astatine would there be in another sample of this compound containing 7.79 g of magnesium?

@X@user.full_name@X@ @GMU: How many decimeters are there in 15.04 centimeters?

@X@user.full_name@X@ @GMU: A compound contains only magnesium and fluorine. A sample weighing 5.98 g of this compound contained 2.33 g of magnesium. How many grams of fluorine would there be in another sample of this compound containing 4.55 g of magnesium?

@X@user.full_name@X@ @GMU: A gas mixture contains 0.1789 mol of C2H6 and 0.2497 mol of NO. What is the partial pressure of C2H6, if the total pressure is 771.39 mm Hg?

@X@user.full_name@X@ @GMU: What is the atomic number of an element if the mass of one atom is 1.674e-24 g?

@X@user.full_name@X@ @GMU: What is the atomic number of an element if the mass of one atom is 1.995e-23 g?

@X@user.full_name@X@ @GMU: What is the arrangement of charge clouds (electron pairs) around the central atom in KrF2?

@X@user.full_name@X@ @GMU: What is 3.47 K on the Fahrenheit scale?

@X@user.full_name@X@ @GMU: How many grams of NO must one react with a stoichiometric amount of O2 to produce -10.78 kJ?2NO(g) + O2(g) → 2NO2(g) ΔH = -114 kJ

@X@user.full_name@X@ @GMU: Which of the elements given will have a big jump in the 8th ionization energy?