Fast ! the density of aluminum is 2.70 g/cm3. how large a cube, in cm3, would contain 2.00 x 10^24 atoms of aluminum? use dimensional analysis to solve and show all work including units on every number

33.2 cm³

We are given;

Density of Aluminium is 2.70 g/cm³

Number of atoms of Aluminium is 2.00 × 10^24 atoms

We are required to calculate the volume of the cube;

We know that 1 mole of a compound or an element contains a number of particles equivalent to the Avogadro's constant.

Therefore;

1 mole of Aluminium contains 6.022 × 10^23 atoms

But, 1 mole of Al = 27 g

Therefore;

27 g of Al contains 6.022 × 10^23 atoms

We need to calculate the mass that contains 2.00 × 10^24 atoms

Moles of Al  = (2.00 × 10^24 atoms) ÷ (6.022 × 10^23 atoms)

                   = 3.32 moles  

Mass of Al = 27 g/mol × 3.32 moles

                 = 89.64 g

We can then calculate volume of Aluminium

Density = Mass ÷ Volume

Rearranging the formula;

Volume = Mass ÷ Density

            = 89.64 g ÷ 2.70 g/cm³

           = 33.2 cm³

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answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation: