Consider the following enthalpy diagram. What is the overall enthalpy change DHrxn for the system?

A. -1,300 kJ

B. -300 kJ

C. 300 kJ

D. 1,300 kJ

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.