1 Activity (7.80) A teacher fills a bucket with sand and small pieces of gravel. The teacher pours
several cups of black coffee into the bucket as students observe the demonstration.
The setup is shown below.
Black coffee
Bucket filled with
sand and small
pieces of gravel

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Can someone me with questions 12 and 13 plz.

Label a-f based on the table using c for concentrated and d for dilute