What mass of oxygen can be obtained from heating 439.09 g of potassium chlorate?
2KClO3 → 2 KCl + 302
Select one:
O a. 172.0
O b. 76.44
O c. 3855
O d. 114.7

Why is the melting of ice a physical change ?

Which of the following is a possible formula unit? (2 points) select one: a. pbo b. li2b c. al2pb3 d. clo

Which of the following observations indicates that an atom has neutrons? some uncharged particles are scattered by a beryllium atom when it hits a gold foil. some uncharged particles bounce back from a gold foil when it is bombarded with alpha particles. a radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms. a radiation which attracts electrons is produced when a beryllium atom is bombarded with alpha particles.