27. The first five ionization energies of an element, X, are shown in the table. Ionization energy 1st 2nd 3rd 4th 5th Value / kJ mol-1 631 1235 2389 7089 8844 What is the mostly likely formula of the oxide that forms when X burns in oxygen A. X20 O B. XO I C. X203 D. XO2

3

explanation:

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101

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.