How many grams are in .0079 moles of uranium

Convert moles of uranium into grams by using the molar mass of uranium, found on the periodic table: it's 238.03 grams/mole. Use that and multiply 0.0079 by 238.03 to get your answer, which should be 1.880437. If you want that in sig figs, it should be 1.880 grams.