What is the osmotic pressure in atm of a 0,50 M urea solution at 25.0°C?
Assume R = 0.0821 Latm/molk
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Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

If an atom has 12 protons and 13 neutrons