Your answer is going to be b
Answer:
Reptiles, marsupials, dogs, and cats
Explanation:
Answer:
23
Explanation:
we do not care about electrons, so 11 + 12 = 23
The net ionic equation of the reaction could be determined by cancelling out the like ions between both sides of the reaction. These ions are called spectator ions. They are called as such because they do not actively participate in the reaction. The spectator ions are Na+ and Cl-. When you cancel those, the equation would become letter D.
Atomic mass of helium is 4.002642g/mol
(542000g)/(4.002642g/mol)*6.02*10^23 = 8.15*10^28 atoms
