Respuesta :

Set up your units to algebraically cancel out the original unit, and end up with the units of the answer in the final numerator. We'll first convert to moles by using Avogadro's number, then the atomic mass of tungsten (W) from the periodic table, since the mass, in grams, of one mole of any element is the atomic mass number:
2.1x10∧24 atoms W x (1 mole/6.022x10∧23 atoms) x (183.84g/1 mole) = 641.089 grams
Since your given number has only two significant figures (2.1), your answer should also only express in 2 sig figs: 6.4x10∧2 grams

okpalawalter8

We have that the mass (in g) of 2.1 x 1024 atoms of W  is mathematically given as

M= 641.089 grams

Mass

Generally the equation for the Mass  is mathematically given as

M=N*1/Av*atomic mass number

Therefore

M=2.1x10e24x (1 mole/6.022x10∧23 atoms) x (183.84g/1 mole)

M= 641.089 grams

For more information on Mass visit

https://brainly.com/question/15959704

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