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When performing a mass to mass stoichiometry problem, explain why masses must be converted to moles rather than directly using the mass of reactants to predict the mass of products. Consider the synthesis reaction of Mg and O2 below. If equal masses of these reactants are allowed to react, explain how you would know which reactant is the limiting reactant and which reactant is the excess reactant. (Lesson 8)
2 Mg + O2 → 2 MgO
Calculate the value of K for the reaction at this temperature. Give your answer in scientific notation
An important space shuttle mission has been interrupted with an emergency that will delay the return of the crew to earth indefinitely. You are an emergency team that has been assigned the task of determining how long the crew can survive before c..
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse. Why. Why should the recieveing flask be submersed under an ice bath when collecting isopropanol or acetone
Determine the chemical formula of each compound and refer to the formula to calculate the mass percent composition of each constituent element.
What mass of NaHCO3 must be added to 1.00 L of 0.10 M Na2CO3 to make a buffer solution whose pH=9.85? pKa2(H2CO3)=10.33
Shown below are 1 H-NMR spectra for two isomers of a compound with molecular formula C 5 H 12 O. Both compounds show strong and broad peaks at 3500 cm -1 in their IR spectrum. For each spectrum, provide the correct structure.
Hypervenilation raises the pH of the blood in a condition known as respiratory alkalosis. Common treatment is to have the patient breathe into a paper bag,
Calculate the mass of calcium carbonate formed when 25 mL of a solution of calcium chloride at 0.10 M react with sodium carbonate in excess
An important component of seawater is salinity or salt. In the same way that we can describe the hydrologic cycle.
How many grams of solid barium sulfate form when 10.2 mL of 0.160 M barium chloride reacts with 68.6 mL of 0.055 M sodium sulfate. Aqueous sodium chloride is the other product.
The Law of Conservation of Mass states that matter is neither created nor destroyed in a chemical reaction. How do you explain iron nails getting heavier as they rust?
the partial pressure of water vapor in an atmosphere at 35 degree celsius and 740 mm hg pressure is 37 mm hg. what is
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