Given the balanced equation _ca(oh)2+_(nh4)> _caso4+_nh3+_h2o
what is the sum of the coefficients when the equation is completely balanced using the smallest whole-number coefficients?

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

8. what happens to matter during a chemical reaction

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.