Suppose that gas at -30°C is stored inside a 1-cm-radius spherical container (k = 50 W/m. K) with a wall thickness of 2 cm. Inside and outside convective heat transfer coefficients are 1250 and 25 W/m2.K. If the ambient temperature is 25°C, a. Calculate overall heat transfer coefficient for the inner area (Ui). Determine heat transfer
rate using Ui.
b. Repeat part a for overall heat transfer coefficient for the outer area (Uo).

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

the answer is either b or c

the answer to this question is 3.

i don,t know so just answer mine