Answer:
The unit of molar mass is kg/mol. Where, m = mass, v = velocity.
Hope that helps :)
1,2-dimbromopropane would be something like C which is the second best answer.
B would be correct if it had another carbon.
A is like C but incorrect for the same reason. 1,2-dibromoethane is what A is.
The answer has to be D where the bromines are right across from each other.
Answer:
DNA bases bonds with each other in this sequence
Explanation:
Guanine bonds triple bonds with cytosine respectively while Adenine bonds double bond with thymine .
Answer:
= 25.05°C
Explanation:
Given:
the value of ΔHcomb (heat of combustion) for dimethylphthalate (C10H10O4) is = 4685 kJ/mol.
mass = 0.905g of dimethylphthalate
molar mass = 194.18g dimethylphthalate
number of moles of dimethylphthalate = ???
= 21.5°C
= 6.15 kJ/°C
= ???
since we have our molar mass and mass of dimethylphthalate ;we can determine the number of moles as;
0.905g of dimethylphthalate × 
number of moles of dimethylphthalate = 0.000466 moles
Heat released = moles of dimethylphthalate × heat of combustion
= 0.000466 moles × 4685 kJ
= 21.84 kJ
∴ Heat absorbed by the calorimeter =

21.84 kJ =6.15 kJ/°C 
21.84 KJ = 
21.84 KJ =
- 132.225 kJ
21.84 KJ + 132.225 kJ = 
154.065 kJ = 
= 
=25.05°C