The manufacture of nitrogen trifluoride is a growing industry, due to its use as a plasma etchant in the semiconductor industry. Nitrogen trifluoride can be synthesized by passing a currentthrough a high-temperature mixture of ammonium fluoride and hydrogen fluoride, withhydrogen gas as a byproduct. In one synthesis, 1.20x103g ammonium fluoride is reacted with 1.20x103g hydrogen fluoride to produce 5.00x102g nitrogen trifluoride. What is the limitingeactant, excess reactant, theoretical yield of nitrogen trifluoride, percent yield, and mass ofxcess reactant remaining after the reaction?

Your lab partner accidentally mixed some sodium chloride with your sample of Epsom salts (MgSO₄･7H₂O). You want to make a standard solution of magnesium ion, and this is the only sample of a magnesium salt you have. To determine the amount of magnesium salt in the mixture, you heat 100.00 g to drive off the water of hydration and find that the anhydrous mixture has a mass of 57.75 g. How many grams of the original salt mixture must you add to 1.000 L of water to make a 0.100 M solution of Mg²⁺ ion?

The human body burns glucose (C6H₁2O6) for energy according to this chemical reaction: C6H12O6 +60₂-6CO₂ + 6H₂O The products of the reaction are carbon dioxide (CO₂) and water (H₂O). Interestingly, all of the carbon dioxide and much of the water exits the body through the lungs: on every breath, the average person exhales 500. mL of air, which is typically enriched to 4% CO₂ and 5% water vapor by volume. In short, when a person loses weight by dieting, the weight that is lost actually departs his body as a gas, every time he exhales. Each kilogram of body fat lost requires exhaling about 2.9 kg of carbon dioxide. Calculate how many breaths it takes an average person to "exhale" 1.00 kg of fat. Round your answer to the nearest thousand. You'll need to know that the density of CO₂ is 2.0 kg/m³. 0 ☐ ☐x10 X

Consider the reaction. heat 2 Al(s) + Fe,0,(s) Al, 0,(s) + 2 Fe(1) If 10.7 kg Al reacts with an excess of Fe, O3, how many kilograms of Al,O, will be produced? mass of Al, O, produced: kg * TOOLS x10