You add 9.3 g iron to 29.40 mL of water and observe that the volume of iron and water together is 30.58 mL . Calculate the density of iron.

7,881 g/L

Explanation:

Iron volume = 30.58 mL - 29.40 mL = 1.18 mL

1.18 mL / 1000 mL = 0.00118 L

Iron density = mass/volume

                    = 9.3g / 0.00118 L

                    = 7,881 g/L

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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