phosphorus has an atomic mass of 31 and an atomic number of 15, so the number of nuetrons must be?

Three solutions are mixed together to form a single solution; in the final solution, there are 0.2 mol pb (ch3coo) 2, 0.1 mol na2s, and 0.1 mol cacl2 present. part a what solid (s) will precipitate? express your answer as a chemical formula.

A solution has a hydronium concentration of 1.3x10^-3 M. what is the pH of the solution?

A car is traveling down the interstate at 37.1 m/s. The driver sees a cop and quickly slows down. If the driver slows to 29.8 m/s in 3 seconds, what is the acceleration of the car?

Which best explains the relationship between parent rock and soil composition?

Which of the following represents a compound? C20 H2O O2 H2

Which state of the West produces the widest varieties of fruits, vegetables, and nuts? A) California B) Colorado C) Wyoming D) Alaska

A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out the haber reaction under four different conditions.

What type of Bond exist in a molecule of hydrogen Iodide

Which common material is an example of a polyamide?

A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘ C. How many grams of this gasoline would fill a 12.8 gal tank (1US gal=3.78L) ?