Cách viết sau chỉ ý gì?
2NaCl, 5Cu, 3CO2, 5H2O, 6Zn, 8O2

How many atoms of oxygen are contained in 160 grams of n2o3

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?