I think our health habits in middle childhood do affect our health as adults
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
Answer:
The correct answer is C: A spring tide can occur for both position A and position B.
Explanation:
The explanation for the above is very straightforward.
When the moon is between the sun and the earth and when the earth is between the sun and the moon, the gravitational forces of both the sun and the moon tend to exert a pull the earth whose surface is 70% water thus creating higher tides.
These types of tides are called spring tides and occur when the moon is full and when there is a new moon.
Full moon occurs when the earth is inbetween moon and the sun while the new moon occurs when moon is between the sun and the earth.
Cheers
Japan- has high youth dependency ratio because their is not enough working young people to sustain the amount of old people in the society. As a result, Japan wants to introduce Pro-natalist and pro immigration policies to promote population growth and to sustain their economy.
Africa- The problem is they have an unsustainably large population. So, they’d want to promote anti natalist and anti immigration policies.
