Posted by Brooke on Sunday, January 10, 2010 at 4:25pm.
You REALLY should read questions you post. The typos make this almost useless; however, I will assume you meant to write, ".....and 21.0 g Mg(OH)2 is recovered?"
Mg + 2HOH ==> Mg(OH)2 + H2
1. Convert 10.1 g Mg to moles. Moles = grams/atomic mass.
2. Using the coefficients in the balanced equation, convert moles Mg to moles Mg(OH)2.
3. Now convert moles Mg(OH)2 to grams. grams = moles x molar mass.The value, in grams, which you obtain here is the THEORETICAL YIELD.
4. Now that you have the theoretical yield, you can calculate the percent yield.
%yield = (grams obtained/theoretical yield)*100 =??
For the second part, start with 24 g Mg and determine the theoretical yield. Then multiply by 0.95 to obtain the actual yield if the process is 95% efficient.
What is the percentage yield of 10.1g mg reacts with an excess of water and 21.0 g Mg(OH)2 is removed ?
Related Questions
Chemistry (Stoichiometry) - Magnesium powder reacts with steam to form magnesium...
Chemistry - When hydrochloric acid reacts with magnesium metal, hydrogen gas and...
Chemistry - Hydrochloric acid reacts with Magnesium to form Magnesium Chloride ...
AP Chemistry - When hydrochloric acid reacts with magnesium metal, hydrogen gas ...
Chemistry - A 4.5 g piece of magnesium ribbon undergoes combustion in air to ...
chemistry - Magnesium reacts with HCl to produce magnesium chloride and hydrogen...
chemistry - When magnesium is heated in air, it reacts with oxygen to form ...
Chemistry - Magnesium metal reacts with hydrochloric acid to form magnesium ...
Chemistry - How many liters of hydrogen gas can be made from 65.5g of magnesium...
chemistry hw question - Magnesium hydroxide + hydrogen chloride-----> ...
For Further Reading
