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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
A student obtains 15.0 mL of 0.65 M phosphate solution and reacts it with excess ammonium and magnesium (Mg2+) under basic conditions. Upon reaction completion, she isolates and dries the product, and finds its mass to be 1.9426 g. Calculate the %..
FeCl3 and Mg3(PO4) to give FeSO4 and MgCl2 I need to know what are the : Molecular Equation? Ionic Eq? Net Ionic Eq? What is the name of this type of reaction. Which ions are spectator ions
when given a molecule how do you draw the fisher projection? how do you know which atoms or groups should go back and
Problem- Glucose is pumped into some animal cells by a symporter powered by the simultaneous entry of Na+. The entry of Na+ provides a free-energy input of 10.8kJ/mol under typical cellular conditions
Question- A. Calculate the ratio of solubility of Mg(OH)2 dissolved in pure H2O to Mg(OH)2 dissolved in a 0.180M NaOH solution.
An unknown amount of Lithium hydroxide is dissolved in 50.0 mL of water. If it take 14.7 mL of a 0.150 M solution of oxalic acid (H2C2O4) to neutralize the lithium hydroxide solution, what is the mass of lithium hydroxide (in grams) that was disso..
Which is the gas evolved when ammonium chloride reacts with calcium hydroxide? What happens when lead(II) nitrate crystals are heated? Why nitric acid stored in reagent bottle for long time show colour change? Explain the laboratory synthesis of Nitr..
Write the reaction for the hydrolysis of propionyl propionate (an ester) -- that is, the reaction of this ester with water, yielding a carboxylic acid and an alcohol.
how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction. 4Na + O2 yields 2Na2O
A common by-product in this reaction is biphenyl, which is generated through a coupling reaction of phenylmagnesium bromide with unreacted bromobenzene. Draw the structure of biphenyl. Which part of your workup removed this by-product
If your methanol was wet (contained water), what compound would be formed and isolated along with trityl methy ether. Explain and what effect would that have on the melting point of the product
Concentrated HCl is 36.5% HCl by mass and has a density of 1.18 g/mL.What is the molality?What is the molarity?
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