Busy highway thats why they build sound barriers when a residetial area is directly next to a highway
A carpet is most similar to a rectangle.Therefore the length and width of the carpet can be multiplied for a cumulative sum of 198
Answer:
There are a couple of tricks you can use when taking the IB:
Don't underestimate the time. ...
Don't waste time on note taking. ...
Don't take notes a month before the finals. ...
Do your homework and be attentive in class. ...
Start your projects on time. ...
Pay attention to your teacher. ...
Don't dedicate too much time to CAS.
Explanation:
Hope this helps
-A Helping Friend
Answer:
- 484 KJ/mol
Explanation:
The reaction equation is;
CH4(g) + F2 (g) ------> CH3F(g) + HF(g)
The enthalpy of the reaction can be calculated from bond energies using the formula;
ΔHreaction = Bond energy of reactants - bond energy of products
or
ΔHreaction = Bonds broken - bonds formed
[4(413) + 1(155) - 3(413) + 1(485) + 1(567)]
[(1652 + 155) - (1239 + 485 + 567)]
[1807 - 2291]
= - 484 KJ/mol
Sight or visual information
