Question

Upon balancing the equation below, how many moles of calcium chloride are needed to react completely with 6.2 moles of silver nitrate?

AgNO3 + CaCl2 yields AgCl + Ca(NO3)2

3.1 moles
6.2 moles
9.3 moles
12.4 moles

Answer 1

@asib1214

Answer 2

balance the reaction

Answer 3

then use this
\[\frac{ mole~of~AgNO_3 }{ coefficient~ of~AgNO_3 } =\frac{ mole~of~CaCl_2 }{ coefficient~of~CaCl_2 }\]

Answer 4

you know mole of AgNO3 and you will know coefficient when you balance the reaction
mole of CaCl2 = X
and coefficient again you will see it when u balance the equation

Answer 5

6.2 moles

Answer 6

??

Answer 7

@Somy

Answer 8

did u balance the equation?

Answer 9

please balance it and show it to me

Answer 10

mole of CaCl2 = X
111=X
is this what you mean?

Answer 11

NO

Answer 12

Please write the balanced equation first
i'll show the rest in another way

Answer 13

mole of AgNO3coefficient of AgNO3=mole of CaCl2coefficient of CaCl

Answer 14

im sorry
i meant reaction <.<

Answer 15

AgNO3 + CaCl2 yields AgCl + Ca(NO3)2

this
balance it

Answer 16

169.87+110.98 yields 143.32+164.088

Answer 17

no.... i did not ask for molecular mass

Answer 18

you dont know how to balance reactions?

Answer 19

i guess not :l

Answer 20

i see well look
AgNO3 + CaCl2------> AgCl + Ca(NO3)2

look at each atom on left of the arrow and right of the arrow

Answer 21

you have to make it so that number of particular atom on the right is equal to the left

Answer 22

lets take NO3
on left side there is only 1 NO3
on right side there are 2 NO3
do u see it?

Answer 23

no i dont can you please set it up so i can see it

Answer 24

Ca(NO3)2
(NO3)2
2- means there are 2 of NO3

Answer 25

i think you better watch this
http://www.youtube.com/watch?v=RnGu3xO2h74
and learn
only then we can proceed

Answer 26

ok

Answer 27

@Abmon98 i need to leave now, can you explain him/her how to do it?
explain about ratio and coefficients better and try doing it in steps, ok?

@superhelp101 he will help you, if you don't get something - just ask him :) he is really good in chem :D

Answer 28

thank you!

Answer 29

make sure to watch the video i gave you, if something not clear ask him ok?
because before going any further you need to know how to balance chemical reactions

Answer 30

alright

Answer 31

@Somy Thank you for choosing me :) and sure i ill
AgNO3 + CaCl2 yields AgCl + Ca(NO3)2
Write down the number of atoms that you have on each side of the equation.
On the Reactant Side: Ag:1 N:1 O:3 Ca:1 Cl:2
On the product side: Ag:1 N:2 O:6 Cl:2
Add a coefficient of 2 to AgCl
AgNO3 + CaCl2 yields 2AgCl + Ca(NO3)2
On the Reactant Side:Ag:1 N:1 O:3 Ca:1 Cl:2
On the product side: Ag:2 N:2 O:6 Cl:2
now add a coeffcient of 2 to AgNO3
2AgNO3 + CaCl2 yields 2AgCl + Ca(NO3)2
On the Reactant Side:Ag:2 N:2 O:6 Ca:1 Cl:2
On the product side: Ag:2 N:2 O:6 Ca:1 Cl:2
A mole ratio is ratio between the amounts in moles of any two compounds involved in a chemical reaction.
Ratio of mole of AgNO3 to CaCl2
2:1
6.2:x moles of CaCl2
Cross multiplication happens here
6.2*1/2=3.1 moles of CaCl2 are required to react completely with 6.2 moles of AgNO3

Answer 32

omg for you help @Abmon98 and @Somy after watching the video and your explanation it works out prefectly!

Answer 33

Good to hear that :D

Answer 34

thats good :))