Pick all of the above processes that are endothermic. Group of answer choices warming the ice to -10 degrees Celsius decreasing the temperature to 101 degrees Celsius mixing in nitrogen gas the ice melting deposing the water vapor freezing the liquid

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond