so, you have 75 grams
How many moles of bentoite is that?
Note that each mole of bentoite contains 3 moles of Si.
In 1985 benitoite became the California “state gemstone.” Found only in a tiny mine near Coalinga, California, it is a silicate of barium and titanium with trace impurities that cause a range of hues from colorless to blue to pink. Its general formula is BaTi(SiO3)3. If a 15-carat stone were pure BaTi(SiO3)3, how many moles of silicon would it contain? (There are exactly 5 carats per gram)
4 answers
I'm having a hard time setting it up to figure out the answer
15 carat*1gram/5carats=3 grams.
moles bentoite=3grams/molmassbentiote
mol mass is= 1Ba+1Ti + 3SI+9O3
look up the atomic mass of each of those...
mol mass= 137 + look these up and add them.
Calculate the moles of bentoite.
now for moles Si, multiply by three
moles bentoite=3grams/molmassbentiote
mol mass is= 1Ba+1Ti + 3SI+9O3
look up the atomic mass of each of those...
mol mass= 137 + look these up and add them.
Calculate the moles of bentoite.
now for moles Si, multiply by three
I got ba-137 ti-48 si-28 and o-16. Now to get mol mass I understand I need to add these up but am I suppose to be multiplying o by 9 and si by 3 based on the formula for mol mass or just o times 3 and si by 3 after?