Hi John! 'Urethane prepolymer' contains the monomer units of urethane, which are also known as carbamates. If you look at the WIki pages for carbamate you'll notice R's in the chemical structure. It's
Hello Prashant! No, the elements at the bottom of the ocean and the elements in the Earth's crust are the same elements on the Earth's surface. You can go look for new ones, but you will not find them
Hi James! Well, you're right. The mole is a great starting point in chemistry, because it defines the amount of 'stuff' you're working with. A mole ( http://en.wikipedia.org/wiki/Mole_(unit)) is
Hi James! While the Periodic Table probably and the general chemical principles probably have not changed all that much since 1963, using your father's textbook could be detrimental to your grade for
Dear Prashant; While exploring the centres of stars, there are possibilities of discovering new elements. On Earth, scientists are pretty convinced we have discovered all the stable elements in the

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