D i took the test Enjoy :))))
The isotopes 55Fe and 58Fe are both Iron, but have a different atomic mass due to the added number of neutrons. Both isotopes have 26 protons, but 55Fe has more neutrons.
Formula of Molarity =
Molarity = no. of moles /volume of solution in L
Given, 0.45M= no. of moles/0.750L
Therefore, no. of moles = 0.45M x 0.750L= 0.3375
It’s pretty simple actually anything that moves has energy say you threw a ball u transferd your kinetic energy into that ball it’s really simple anything that moves has energy