QUESTION 3 What is the enthalpy change for the first reaction?
P4(s) + 6Cl2(g) - 4PC13(0) AH -
P4(s) + 10C12(g) - 4PC15(s) AH = -1.771.6
PC13(1) + Cl2 - PCs(s) AH - -128.1

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Which statement describes james chadwick’s discovery.