Rock, metal, wood, glass, animals, and plants are all forms of what?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Word equation for k+ h2o yield koh + h2

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.