An isotope contains 8 protons and 10 neutrons. Construct the symbol for the isotope. How would I do that and what would it be?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it