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
Answer:
120.44 × 10²³ molecules
Explanation:
Given data:
Moles of C₃H₈ = 5.0 mol
Molecules of water produced = ?
Solution:
Chemical equation:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Now we will compare the moles of C₃H₈ and water.
C₃H₈ : H₂O
1 ; 4
5 : 4×5 = 20 mol
Molecules of water:
1 mole = 6.022 × 10²³ molecules
20 mol×6.022 × 10²³ molecules / 1 mol
120.44 × 10²³ molecules
Explanation:
An element just has one-type atoms/atom (e.g. O2). Meanwhile, a compound is a variety of atoms (e.g. H2O).
