Anybody know number 7 ? Please help !!

Titania buys a bag of fertilizers at the store. it reads 30-15-10. how much phosphorous is in the fertilizer a. 30% b. 15% c. 10%

We just started a new lesson in chemistry and everyone hates it and i dont get it one bit. i hate school. h el p. balanced equationc3h8+5o2-> 3co2+4h2o1.) if you start with 14.8g of propane(c3h8) and 3.44g of oxygen, which is the limiting reactant -check my answer 2.)what mass of excess reagent is left over? 3.)what mass of carbon dioxide can be made? 4.)what mass of water is produced?

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?