SUPPORT: The bones support the main frame of the human body to keep its shape.
PROTECTION: The bones protect certain organs such as the brain protected by the cranium.
MOVEMENT: Allows strength in moving muscles.
PRODUCTION: Bone marrow produces red blood cells.
STORAGE: It stores minerals like calcium.
Answer:
election shock u
Explanation:
Wind (Movie, Quiz, Graphic Organizer & Challenge)
Answer:
10.5 moles of Nitrogen gas is produced
Explanation:
Number of moles = mass / molar mass
molar mass of Nitrogen = 14g/mol
mass produced= 147g
moles= 147/14= 10.5moles of Nitrogen gas produced
1 mole of NH4NO3 requires absorption of 25.7 kJ/mol.
Therefore; 1 kJ of heat energy is absorbed by dissolving 1/25.7 moles of NH4NO3.
Hence; For an energy of 73.0 kJ to be absorbed the moles of NH4NO3 that dissolves will be;
= (1/25.7 × 73)
= 2.84 moles
Hence; 73 kJ is absorbed by dissolving 2.84 moles of NH4NO3.
If the heating is done on one small area on the top, there will be convection. If the heating is restricted to a small fraction of the heating area, then within that area the heating will go deeper than anywhere else on the surface. Then unheated area will have a shallower region of high temperature. Then some convection will occur in the deeper layers, causing some motion on top.
This happens quite a bit during welding. Convection is very significant in welding, even when the heating is from the top.
