1. Find the molar mass of uranium:
* The molar mass of uranium (U) is approximately 238.03 g/mol. This means 1 mole of uranium weighs 238.03 grams.
2. Convert grams to moles:
* Divide the mass of uranium (1 gram) by its molar mass:
1 g / 238.03 g/mol = 0.00420 mol
3. Use Avogadro's number:
* Avogadro's number tells us that there are 6.022 x 10²³ atoms in one mole of any substance.
* Multiply the number of moles of uranium (0.00420 mol) by Avogadro's number:
0.00420 mol * 6.022 x 10²³ atoms/mol = 2.53 x 10²¹ atoms
Therefore, there are approximately 2.53 x 10²¹ atoms in 1 gram of uranium.
