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3 years ago

There are three naturally occurring isotopes

Physics

1 answer:

mote1985 [20]3 years ago

7 0

Explanation:

$^{41}\text{Hi}: 41.000\:\text{g/mol}×0.283 = 11.603\:\text{g/mol}$

$^{42}\text{Hi}: 42.000\:\text{g/mol}×0.429 = 18.018\:\text{g/mol}$

$^{44}\text{Hi}: 44.000\:\text{g/mol}×0.288 = 12.672\:\text{g/mol}$

Adding all the weighted values on the right hand side, we get

$\text{Hi}: 42.293\:\text{g/mol}$

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Answer:

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Explanation:

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y component of the vector $=7sin30^{\circ}=7\times 0.5=3.5$

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Now other vector of length of 7 units and makes an angle of 120° with positive x-axis

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Now sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j

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