Asolution of ammonia and water contains 3.10×1025 water molecules and 7.10×1024 ammonia molecules. how many total hydrogen atoms are in this solution?

Hydrogen atoms =

Explanation:

molecules

molecules

1 water molecule has 2 hydrogen atoms

1 ammonia molecule has 3 hydrogen atoms

Hydrogen atoms = 2*(water molecules) + 3(ammonia molecules)

Hydrogen atoms =

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.