- What is the ammonium ion, Tin(II) ion, Chromate ion, and nitrate ion?

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What is the discriminant for 9x^26x+1=0? How many and what type of solutions does this equation have? How can i be a agent of new product ? Where can I get a list of all the rhino fossils found over the world with short descriptions of each? Does the "All" detergent contain borax? If Z is a standard normal random varialbe, find the following probabilities
a) P(Z<= -1.77)
b) P(Z>=-1.96)
c) P(.35<= Z.<=.85)?