- Please Help Me Answer All Of Them Correctly 1 (211.22 KiB) Viewed 29 times
Please help me answer all of them correctly.
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answerhappygod
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Please help me answer all of them correctly.
Please help me answer all of them correctly.
(a) Atoms are very small compared to objects on the macroscopic scale. The radius of a niobium atom is 143 pm. What is this value in meters and in centimeters? m (b) The mass of a single niobium atom is 1.54x10-22 g. Suppose enough Nb atoms were lined up like beads on a string to span a distance of 42.5 cm (17 inches). How many atoms would be required? atoms What mass in grams of Nb would be used? g How many niobium atoms does this represent? cm Could you weigh out this amount of niobium using a typical laboratory balance? (c) Taking the density of niobium metal to be 8.57 g/cm3, calculate the mass of metal needed to form a piece of Nb wire with the same length as the distance in b, but with a diameter of 1.50 mm. Hint: The volume of a cylinder is n times its radius squared times its height. (V = n r² h) g atoms
(a) Atoms are very small compared to objects on the macroscopic scale. The radius of a niobium atom is 143 pm. What is this value in meters and in centimeters? m (b) The mass of a single niobium atom is 1.54x10-22 g. Suppose enough Nb atoms were lined up like beads on a string to span a distance of 42.5 cm (17 inches). How many atoms would be required? atoms What mass in grams of Nb would be used? g How many niobium atoms does this represent? cm Could you weigh out this amount of niobium using a typical laboratory balance? (c) Taking the density of niobium metal to be 8.57 g/cm3, calculate the mass of metal needed to form a piece of Nb wire with the same length as the distance in b, but with a diameter of 1.50 mm. Hint: The volume of a cylinder is n times its radius squared times its height. (V = n r² h) g atoms