Abag contains a mixture of copper and lead bbs. the average density of the bbs is 9.60g/cm3.assuming that the copper and lead are pure, determine the relative amounts of each kind of bb.
express your answers numerically separated by a comma.

Explanation:

Let the percentage of copper by weight present is x. Hence, then the percentage of lead will be (100 - x).

So, total mass = 100 g

Therefore, volume occupied by copper will be as follows.

                 Volume =

                               =

Volume occupied by lead will be as follows.

                 Volume =

                               =

Total density =

        9.60 =  

                     x = 50.34

Therefore, percentage of lead will be (100 - 50.34) = 49.66.

Thus, we can conclude that percentage of copper is 50.34% and percentage of lead is 49.66%.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

yes

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