Mixture in which particle size average between 1 nm and 1000?

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

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.

If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?