Element is Gold use 6.02 x 1023 for Avogadro's number or you may be counted wrong!!! 1. What is the symbol for your element? (Must be after Xe in Periodic Table). Au 2. What is the molar mass of your element? (include units). 197 g/mol 3. How many atoms are in a mole of your element? (No calculation needed) 4. If you have 2.15 x 1024 atoms of your element, how many moles is that? 5. If you have 2.15 x 1024 atoms of your element, how many grams is that? 6. Theoretically speaking, if your element was in the gas state at STP, how many liters is 56.87 grams of your element? (Most elements are not gases at STP so this question is just theoretical) You must solve this using CHM 130 knowledge only.

Element is Gold use 6.02 x 1023 for Avogadro's number or you may be counted wrong!!! 1. What is the symbol for your element? (Must be after Xe in Periodic Table). Au 2. What is the molar mass of your element? (include units). 197 g/mol 3. How many atoms are in a mole of your element? (No calculation needed) 4. If you have 2.15 x 1024 atoms of your element, how many moles is that? 5. If you have 2.15 x 1024 atoms of your element, how many grams is that? 6. Theoretically speaking, if your element was in the gas state at STP, how many liters is 56.87 grams of your element? (Most elements are not gases at STP so this question is just theoretical) You must solve this using CHM 130 knowledge only.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter9: Chemical Quantities

Section: Chapter Questions

Problem 2CR: erhaps the most important concept in introductory chemistry concerns what a mole of a substance...

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One chocolate chip used in making chocolate chip cookies has a mass of 0.324 g. (a) How many chocolate chips are there in one mole of chocolate chips? (b) If a cookie needs IS chocolate chips, how many cookies can one make with a billionth (1109) of a mole of chocolate chips? (A billionth of a mole is scientifically known as a nanomole.)
substance A2B is 60% A by mass. Calculate the present B (by mass) for AB2 .
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