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Y psoriasis is banned in gamca test for gulf country visa.. It is not contagious and y they are banning inspite of it..? How much butter is equal to 2 tablespoons of oil? Could a black hole exist within the event horizon of a bigger black hole? Naphthalene sublimation rate=3*10^-5/min. Volume of room=60m^3. How would I calculate the naphthalene concentration in the air of the room? If I save 300 dollars every 2 weeks for 6months how much will I have?