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notsponge [240]
3 years ago
13

Need help asap Please help

Chemistry
1 answer:
storchak [24]3 years ago
7 0

Answer:

do u see my pfp its pico from newgrounds.com

Explanation:

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calculate the atomic mass of gallium if gallium has two naturally occurring isotopes with the following massess and natural abun
Mnenie [13.5K]

Answer: Atomic mass of gallium = 69.72304093 amu

Explanation:

We calculate the atomic mass of Gallium  by  using  the Relative abundance of the isotopes.

Atomic mass =mass x Natural Abundance of Isotope 1  +mass x Natural Abundance of Isotope 2

(60.11/100 x  68.9256) + (39.89/100 x  70.9247)

= 41.43117816 + 28.29186283 = 69.72304093 amu

4 0
3 years ago
A solution is prepared by adding .8 g of iron sulfate to 450mL of water
Anastasy [175]
Molar mass FeSO₄ =151.908 g/mol

Volume = 450 mL / 1000 = 0.45 L

1 mol ----------- 151.908 g
n mol ----------- 0.8 g

n = 0.8 * 1 / 151.908

n = 0.00526 moles 

M = n / V

M = 0.00526 / 0.45

M = 0.01168 mol/L⁻¹

hope this helps!
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4 years ago
Select the correct answer.
Anit [1.1K]

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D

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