Analytical Question: During Calvin cycle, photosynthesizing green algae are provided with CO2 containing radioactive oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain radioactive 18O except __

Why is the melting of ice a physical change ?

How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.