The Diels Alder reaction is a concerted reaction, which means Group of answer choices The product contains a cyclic ring. The diene must be in the s-cis conformation to react. Both exo and endo products are formed. It is an endothermic reaction. All changes in bonding (bond making and bond breaking) occur simultaneously.

Which of the following is most likely true about water in chemical solutions?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

How can a mixture of salt water be separated into salt and water