Answered

IDNLearn.com: Your trusted source for finding accurate and reliable answers. Get thorough and trustworthy answers to your queries from our extensive network of knowledgeable professionals.

Calculate the atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundances of 27.9769 amu (92.2297%), 28.9765 amu (4.6832%) and 29.9738 amu (3.0872%). Show your work.

Sagot :

Alex19idn
The atomic mass would be 28.08535 amu. Multiply 27.9769 by .92297 = 25.803. Multiply 28.9765 by .046832 to get 1.357. Multiply 29.9738 by .03872 to get .925351136. Add 25.803 + 1.357 + .03872 to get 28.08535 amu
Nicolehoward03idn

Answer:

Converting the percent abundance into decimal form, we get:

Si-28: 92.21% = 92.21/100 = 0.9221

Si-29: 4.70% = 4.70/100 = 0.0470

Si-30: 3.09% = 3.09/100 = 0.0309

Average atomic mass of silicon is:

(27.98) x (0.9221) + (28.98) x (0.0470) + (29.97) x (0.0309)

= 25.800 + 1.362 + 0.926

= 28.08 amu

Explanation:

From PLATO

Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. IDNLearn.com has the answers you need. Thank you for visiting, and we look forward to helping you again soon.