Use the values below to answer the question that follows. ΔHsub of MgΔHf of MgCl2(s)1st ionization energy of Mg2nd ionization energy of MgBond energy of Cl2 Electron affinity of Cl=147.7 kJ/mol=−641.3 kJ/mol=737 kJ/mol=1450.7 kJ/mol=242 kJ/mol=−349 kJ/mol For the values given above, "sub" stands for sublimation and "f" stands for formation. What is the lattice energy (lattice enthalpy) of MgCl2? Your answer should have three significant figures.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.