Answer:
Step-by-step explanation:
To convert from grams to moles, we must use the molar mass, which can be found on the Periodic Table.
- Titanium (Ti): 47.87 g/mol
Use this number as a fraction.
Multiply by the given number of grams: 23.9
Flip the fraction so the grams of titanium cancel out.
Divide.
The original measurement had 3 significant figures, so our answer must have the same. For the number we calculated, that is is the thousandth place. The 2 in the ten thousandth place tells us to keep the 9.
There are 0.499 moles of titanium in 23.9 grams.