How would you predict the chemical reactions between another type of acid (e.g., HNO3, H2SO4, etc.) and sodium carbonates?

Chemical Reaction In a chemical reaction a certain compound changes into another compound at a rate proportional to the unchanged amount. There are 40 grams of the original compound initially and 35 grams after 1 hour. When will 75 percent of the compound be changed?

Modeling Data The predicted cost C (in hundreds of thousands of dollars) for a company to remove p% of a chemical from its waste water is shown in the table.

 

 

A model fat the data is given by

for . Use the model to find the average cost of removing between 75% and 80% of the chemical.