Answer: Nu = h Lc ÷ k
Explanation: The Nusselt number (Nu) can be defined as the ratio of convective to conductive heat transfer at a boundary in a fluid.
Nu = Convective Heat Transfer h Lc
-------------------------------------- = ---------
Conductive Heat Transfer k
Where h = conductive hear transfer
Lc = length of the surface
k = thermal conductivity of the fluid
C2H5OH + 3O2 = 2CO2 + 3H2O
Answer:
6.02 × 10²³ atoms.
Explanation:
According to the Avogadro number, the one mole of any substance have 6.02 × 10²³ atoms.
The number 6.02 × 10²³ is called Avogadro number. it is the number of atoms, ions or molecules in one gram atoms of element, one gram ions of substance or one gram molecules of a compound.
For one mole of magnesium.
24.305 g of Mg = 1 mole of magnesium = 6.02 × 10²³ atoms of magnesium.
Other example includes:
18 g of water = one mole of water = 6.02 × 10²³ molecules of water.
23 g of sodium = one mole of sodium = 6.02 × 10²³ atoms of sodium.
Answer:
predation
Explanation:
Predation An interaction in which one organism kills another for food. Prey An organism that is killed and eaten by another organism.
