Can someone please fill in the blanks?

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?