MgO(s)+2HCl(aq) -> MgCl2(aq) + H20(l)

Please explain how I find the enthalpy of this equation?

Chef Potato's body has a cylinder in the middle and two half spheres that make up his bottom and head. He has the two dimensional shape measurements as follows: 20 cm in total length, 5 cm between the end of the cylinder and the top of the top sphere. Reduce Chef1.) Potato by a scale factor of 0.5.2.) Chef Potato needs to be converted from a two dimensional shape to a three dimensional object and then enlarged to 300% of his original size. The three dimensional chef potato is similar in shape to a capsule made of a half sphere at the top, and a half sphere at the bottom and a cylinder in between. Determine the surface area of the enlarged three dimensional chef potato and the scale factor.3.) What are possible dimensions of a box that could be used to deliver the enlarge model of chef potato to store? Justify your answer.

4(d+3) - 3(d-2)=1.2

$60=\sqrt{252d\left(0.72\right)}$60=√252d(0.72) 

I need help with a 20-1 source analysis for social studies. I cannot remember the template for it, nor can I understand the source. Please help. 

Match each structure in the reflex arc numbered above with its description given below. 

Which of the descriptions of the processes is ONLY part of mitosis?

Dividing genetic information into half the orignal amount

Growth and devlpoment

Reclicating DNA

Combining genetic information from two parents

prove the following conjecture.

between any two real numbers, there exists another real number

the proof may be started with "let x and y represent two different real numbers"

During an immune response, some cells of the immune system release antibodies and, thereby, cause pathogens to be immobilized and form clumps. Which cells of the immune system have this function?