Discover Questions

How many moles are there in a 82.1 sample of aspirin, C9H8O4? If the radius of a neutron is 1.0×10−13cm, calculate the density of a neutron in g/cm3. (volume of a sphere = 43πr3)? How many gold atom in gram? On the basis of periodic trends, choose the larger atom in each pair (if possible)
a. Sn or I b. Ge or Po c. Cr or W d. F or Se? Mass of 1g of C?