Answered

Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

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 :

Alex19
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
nicolehoward03

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

We hope this was helpful. Please come back whenever you need more information or answers to your queries. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. We're here to help at Westonci.ca. Keep visiting for the best answers to your questions.