At the end of the reaction, the catalyst is UNCHANGED.
:)
Answer 1:
Isomers are compounds with same molecular formula but different structure formula. Isomers are classified into two types
a) Structural/configurational isomers
b) Stereo isomers
In structural/configurational isomers atom and functional groups are attached in different fashion. Structural isomers may have different functional groups. Structural isomers are further classified as chain isomers, position isomers and functional isomers. In case of stereo-isomers, compounds have same functional group, but different orientation in space. They also have difference activity towards polarized light.
Answer 2:
Hexane has a molecular formula of C6H14. It exhibits following structural isomers
a) hexane<span>,
b) 2-methylpentane
c)3-methylpentane
d) 2,2-dimethylbutane
e) 2,3-dimethylbutane
Thus, in all there are 5 isomers of hexane
Answer 3:
</span><span>Butane has two possible isomers but that decane has 75 possible isomers. This can be attributed to the fact that butane has 4 carbon atoms, while decane has 10 carbon atom. As the number of carbon atom increases, there are higher possible sites of linkage, in different fashion. Therefore, as number 69 of carbon atoms increases, number of different possible isomers increases.
Answer 4:
It has been observed that, though isomers have same molecular formula, but the have different boiling points. Infact, branched isomers have lower boiling point as compared to linear isomers. For example, hexane has boiling point = 69 oC, 2 methyl pentane has boiling point = 60 oC, 2,4, dimethyl butane has boiling point = 58 oC and 2,2 dimethyl butane has boiling point = 50 oC. Thus, it can be observed that branched isomers have lower boiling points as compared to linear isomers. This can be attributed to lower van der Waal's forces of interaction in branched isomers as compared to linear isomers.
</span><span>
</span>
Answer:
613 mg
Explanation:
Number of fargday's 
Here, I = 9.20 A
t = 10.5 min
= 10.5 x 60 seconds
So, 
= 0.0208 F
Here, 2e, 2F
2F = 1 mol of Ni
1 mol = 59 gm of Ni
0.0104 mol = 59 x0.0104 gm Ni
= 0.613 gm Ni
= (0.613 x 1000 ) mg of Ni
= 613 mg of Ni
That Answer would be...
C. Fireworks exploding
because this is a chemicals change the creates the fireworks.
The balanced equation for the reaction is :-
CH₄(g) + 2O₂(g) ---------> CO₂(g) + 2H₂O(l)
Molar mass of CH₄ = 16 g/mole
Molar mass of O₂ = 32 g/mole
Molar mass of H₂O = 18 g/mole
Molar mass of CO₂ = 44 g/mole
Now we calculate the number of moles of reactants,
moles of CH₄ = mass of CH₄/molar mass of CH₄ = 10/16 =
0.625
Moles of O₂ = mass of O₂/molar mass of O₂ = 40/32 = 1.25
Now, as per the balanced reaction, for complete reaction
to occur, one mole of CH₄ require 2 moles of O₂
Thus, 0.625 moles of CH₄ requires 1.25 moles of O₂
both CH₄ and O₂ are present in the exact required
quantity.
Hence, moles of CO₂ formed = moles of CH₄ reacted = 0.625
Mass of CO₂ formed = moles of CO₂ x Molar mass of CO₂ =
0.625 x 44 = 27.5g
Moles of H₂O formed = moles of O₂ reacted = 1.25g
<span>Thus, mass of H</span>₂O formed = moles of H₂O x molar mass of
H₂O = 1.25 x 18 = 22.5g
