The label of a fertilizer states that the fertilizer contains 18.1% p4o10 by mass. what is the mass percentage of phosphorus in the fertilizer?

The fertilizer contains 7.90 % P by mass.

Assume you have 100 g of fertilizer.

Mass of P₄O₁₀ = 100 g fertilizer × 18.1 g P₄O₁₀/100 g fertilizer = 18.1 g P₄O₁₀

M_r of P₄O₁₀ = 4 × 30.97 + 10× 16.00 = 123.88 + 160.00 = 283.88

Mass of P = 18.1 g P₄O₁₀ × (123.88 g P/283.88 g P₄O₁₀) = 7.90 g P  

Mass % P = mass/total mass × 100 % = 7.90 g /100 g × 100 % = 7.90 %

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

the correct answer is:

a. formation of precipitation