the atomic mass of the second isotope is 70.9249u. what is the average atomic mass of the element.
2006-06-12 10:16:58 · 5 answers · asked by shernitalbanks 2 in Science & Mathematics ➔ Chemistry
68.9257 X .604 = 41.6311228
70.9249 X .396 = 28.0862604
Answer: 69.7173832u
2006-06-12 10:22:47 · answer #1 · answered by Black Sabbath 6 · 0⤊ 0⤋
The average atomic mass = 60.40% * 68.9257 + 39.60% * 70.9249
The average atomic mass = 41.6311 + 28.0863 = 69.7174 u
2006-06-12 17:42:13 · answer #2 · answered by Munir B 3 · 0⤊ 0⤋
69.9253u
And the element is Gallium
2006-06-12 17:23:48 · answer #3 · answered by jedisoldier195 1 · 0⤊ 0⤋
69.7174 u I think.... not sure.... Maybe you can decide if my math is correct. 68.9257 * .6040 = 41.6411228 and 70.9249 * .394 = 28.0862604 and 41.6411228 + 28.0862604 = 69.7174
2006-06-12 17:22:46 · answer #4 · answered by Drazir 2 · 0⤊ 0⤋
69.716
2006-06-12 17:23:51 · answer #5 · answered by goldengal 2 · 0⤊ 0⤋