2 years ago

Why is it necessary for Agricultural student to study home science.

Chemistry

1 answer:

sveta [45]2 years ago

7 0

Answer:

Hope it's help uu.. thankuu

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Boron has two naturally-ocurring isotopes. Boron-10 has an abundance of 19.8% and actual mass of 10.013 amu, and boron-11 has an

aniked [119]

Answer:

Average atomic mass = 10.812 amu

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$

Given that:

For first isotope, Boron-10:

% = 19.8 %

Mass = 10.013 amu

For second isotope, Boron-11:

% = 80.2 %

Mass = 11.009 amu

Thus,

$Average\ atomic\ mass=\frac{19.8}{100}\times {10.013}+\frac{80.2}{100}\times {11.009}=1.982574+8.829218=10.811792$

Average atomic mass = 10.812 amu

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3 years ago

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How many significant figures are in 0.00375

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How many moles of H2O will be required to make 17.6 moles of O2

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What is the solubility of NH4CL at 50 degrees C?

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3 years ago

Why is it necessary for Agricultural student to study home science.​

Why is it necessary for Agricultural student to study home science.