I. For the chemical reaction : C4H10 + O2 ------> CO2 + H2O
a) Balance the equation.
b) Why do we have to balance chemical equations?
c) What is the type of reaction?
d) If you start with 3 moles of Butane with enough oxygen, how many moles of water will be formed?
II. John has burned 756 g of log completely in his fire place to heat up his house. At the end of this process, John was left with 106g of ashes.Describe in detail whether matter was destroyed or not during this process?
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A)2,13,8,10
ReplyDeleteB)you must balance an equation so that there willbe the same numbers on both sides so that the equation will be balanced.
C)cumbustion reaction
D)it would change to 30
2. when john was burning the wood it would have been some of the woods matter lost because some of the woods mass was lost when burning the wood those ashes were the woods mass.
why do you have to have same numbers both sides? How some of the woods matter lost in what form it was lost?
ReplyDeletea) 2,13,8,10
ReplyDeleteb)we have to balance equations in order to know how, much of the reactants products the products.
c) combustion
d) 15 H20 is produces
II. Matter was not destroyed 650g that is missing, is in the chemey of the fire place, in the form of suet. When the wood was being burned the smoke carried the suet up to the chemey.
A. 2,13,8,10
ReplyDeleteB. We have to balance the equations so the reactants and products will be equal.
C. Combustion
D. 15
2. Matter can not be destroyed. It can only change forms.
1.a)2,13,8,10
ReplyDeleteb)You must balance chemical equations because of the law of conservation of mass states that in any physical change or chemical reaction, mass is conserved, and neither created nor destroyed. This means the mass of the products is equal to the mass of the reactants.
c)combustion reaction
d)2 moles of Butane= 10 moles of water, so 3 moles of Butane= 15 moles of water.
2.When applying heat to something that is flammable, it is natural for it to give off gases. Therefore, when John was burning the wood, gases let off the chemical reaction of the wood and fire decreased the mass of the product. So, mass was not destroyed, it just went into the air, and was not able to be measured.
The reason that the number should equal the same amount. Is because there is no mass created or destroyed so that would mean there is an even amount.
ReplyDeleteThere is mass lost so that would mean there is some matter lost.
A.)The balanced equation would be 2,13,8 and 10.
ReplyDeleteB.)It is essential to balance an equation so that you will be able to determine the quantities of reactants of products.
C.)This is a combustion reaction
D.)15. 2 moles of butane=10 moles of water. 1x5=5 2x5=10 therefore 3x5=15 moles of water being formed.
2.)Mass cannot be created nor destroyed, but it can change forms. So the 650g of mass that is lost must've taken the form of gas and evaporated.
a. 2,13, 8, 10
ReplyDeleteb. We have to balance equations to make sure that each side of the equation has the same number of atoms of each element.
c. combustion reaction
d. 15
2. When John was burning the log in his fire place, matter was neither created, nor destroyed. So that means that the gas that he had lost vanished away.
1.A)2,13,8,10
ReplyDeleteB)You must balance the equation so that the side will be eqaul. The reactant and product will be equal.
C)combustion reacion
D)15
2.As the fire was burning, mass was not created nor was destroyed. The mass that was lost have turned into the form of gas and have evaporated.
A) 2,13,8,10
ReplyDeleteB) We must balance the equation because we must follow the law of conservation of matter. this isnt't based off of moles but off of mass on the reactants and products side.
C) This is a combustion reaction.
D) 3/2=1.5 1.5*10=15. therefore 15 moles of H2O would be produced.
II) Matter was not destroyed. It just changed its state. Not all of the log was turned into ash, it was burned off and turned into a gas. If you gather the ashes, and all the gases that were released, then it should equal back up to 756g.