The percent yield of this reaction is calculated as follows
Mg3N2 + 3H2O =2NH3 + 3Mgo
calculate the theoretical yield,
moles=mass/molar mass
moles Mg3N2= 3.82 g/100g/mol= 0.0382 moles(limiting regent)
moles of H2o= 7.73g/18g/mol = 0.429 moles ( in excess_)
by use of mole ratio between Mg3N2 to MgO which is 1:3 the moles of MgO = 0.0382 x3 = 0.1146 moles
mass =moles x molar mass
the theoretical mass is therefore = 0.1146mole x 40 g/mol = 4.58 grams
The % yield = actual mass/theoretical mass x1000
= 3.60/4.584 x100= 78.5%
<u>Answer:</u>
<em>Burning gas on a stove top transforms chemical energy into thermal energy.</em>
<u>Explanation:</u>
Cooking food involves in two types of energies. <em>They are chemical energy and thermal energy.
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We use gas for a gas stove.Here gas is chemical energy.when we light the stove the fire lits up and here the <em>chemical energy energy is converted into thermal energy.</em>
Breaking and combining of bonds during combustion gives heat and light.This thermal energy heats the vessels and cooks the food through the <em>process of conduction, convection and radiation.
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<span>386.65 g/mol is the answer
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The predominant elements that compose or make up sugar or similar molecules of glucose, fructose, sucrose etc, are mainly made of Carbon, Hydrogen, Oxygen.
Answer:
The dimerization of butadiene to 4-vinylcyclohexene folows second order kinetics and its rate law will be given by :
Explanation:
The rate of the reaction ;
As given in the question , that graph of time verses was linear but plots of or was curved.
Generally:
Graph of time verses for zero order reaction is linear with negative slope.
Graph of time verses for secon order reaction is linear with negative slope.
Graph of time verses for secon order reaction is linear with positive slope.
So, the dimerization of butadiene to 4-vinylcyclohexene folows second order kinetics and its rate law will be given by :