Converting mols to molecules and molecules to mols PLEASE HELP!!! 3. How many moles of oxygen atoms are present in 8.42 x 1024 molecules of lithium carbonate (LiCO3) ?

4. How many moles of nitrogen are present in 5.3 moles of tin (IV) nitrate (N4O12Sn)?

5. How many molecules of tin (IV) nitrate (N4O12Sn) would contain 6.17 moles of oxygen atoms?

6. How many moles of aluminum sulfate (Al4(SO4)3 )would contain 3.54 x 1025 sulfur atoms?

7. How many rubidium atoms would be present in 9.47 moles of rubidium sulfide (Rb2S)?

8. How many carbon atoms would be present in 2.95 moles of sucrose (C12H22O11)?

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

How does concentration affect reaction rate