Ask your own question, for FREE!
Chemistry 55 Online
OpenStudy (anonymous):

Naturally occurring silicon has an atomic mass of 28.086 and consists of three isotopes. The major isotope is 28Si , natural abundance 92.23%, relative atomic mass 27.97693. The next most abundant isotope is 29Si , relative atomic mass 28.97649. The third isotope is 30Si whose natural abundance is in the ratio of 0.6592 to that of 29Si. Find the relative atomic mass of 30Si

OpenStudy (anonymous):

This is essentially a weighted percentages problem. If I have a final mass m, and it is made of of percentages of mass A, B and C, then: m = (%A * mass of A) + (%B * mass of B) + (%C * mass of C) Make sure you use the decimal form of the percentage in your calculations, i.e. that 78% = .78. Does that help?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!