You do an experiment in which you need 0.5 mole of tyrosine (c9h11no3) .

how many grams must you weigh out?

65 g

90.5 g

181 g

272 g

90.5 g

Explanation:

we know 1 mole of thyrosine = 181g

so 0.5 mole thyrosine =181*0.5

                                      =90.5g

Option (b) is the correct answer.

Explanation:

Number of moles given are 0.5 mol and molar mass of tyrosine () is 181.19 g/mol.

Therefore, calculate the mass of given molecules follows.

   No. of moles of tyrosine =

                              0.5 mol =

                           mass = 90.595 g

Therefore, we can conclude that mass of 0.5 mole of tyrosine () is 90.5 g.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

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