Problem Page A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 18.1 nm. What is the total width of a crystal in millimeters 105 molecules across? Write your answer as a decimal.

Question

Felix Huynh

Chemistry

7 July, 19:34

Problem Page A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 18.1 nm. What is the total width of a crystal in millimeters 105 molecules across? Write your answer as a decimal.

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Answers (1)

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Jonah Salinas · Answer 1

The total width of the crystal is determined by multiplying the spacing which is equal to 18.1 x 10^-9 m by the total number of molecules.

Width = (18.1 x 10^-9 m) (108)

The simplification of the operation above will give us an answer of 1.958 x 10^-6 m. We can convert this to millimeters as below,

(1.958 x 10^-6 m) (1000 mm/1 m)

= 1.9548 x 10^-3 mm

Answer: 1.9548 x 10^-3 mm