How many grams in 120 moles of iron (Fe)?

Mass = 6702 g

Explanation:

Given data:

Number of moles of iron = 120 mol

Mass of iron = ?

Solution:

Formula:

Number of moles =mass/molar masa

Molar mass of iron = 55.85 g/mol

By putting values,

120 mol = mass/ 55.85 g/mol

Mass = 120 mol ×55.85 g/mol

Mass = 6702 g

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in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.