Question

What mass of ilmenite (in grams) is required if you wish to obtain 450 g of titanium? The mass of percent of titanium is 31.6%

Answer 1

Mass of ilmenite=x
We can suggest this equation:
31.6% of x=450 
(31.6/100)x=450
x=(450*100)/31.6=1424.05

Answer: we need 1424.05 g of ilmenite to obtain 450 g of titanium.