Find the molecular formula of a substance with empirical formula CH3 and a molecular weight of 30.05 amu. Write the answer in the format CxHy without subscripting the number of atoms x, and y such as in "C3H8".

i think its 5049.

i hope this !

plasma - state of matter made up of electrically charged particles

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.