Answer:
You have to put energy into a molecule to break its chemical bonds. The amount needed is called the bond energy. After all, molecules don't spontaneously break
Step-by-step explanation:
42.5%
17/40=0.425
0.425*100=42.5%
Helen should of put 0 first, because if you're gonna divide, you need to put the product first, then one of the factoes.
So instead it should be 0÷(-7)=0
Im assuming that the difference is 78:-
2a + c = 180 ( Note 2a = a +b because we are given that a = b))
c - a = 78 Subtract:-
3a = 102
a = 34
So a=34, b=34 and c = 112 Answer.
Answer:
339.336 m^2
Step-by-step explanation:
Given data
Radius= 6meters
We know that the surface area of a half-sphere is given as
A=3πr^2
A= 3*3.142*6^2
A= 3*3.142*36
A=339.336 m^2
