Solve the following problems. Make sure to show your answer using correct units and sig figs. 1. How many molecules are in 65 mol H_SOG?
2. How many moles is 3.47x10 molecules of water?
3. How many moles is 6.74x10^formula units of CaSO,?
4. How many moles are in 3.2x10- atoms of bromine?
5. How many atoms is 8.23 moles of copper (ll) chloride?

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which fact represents evidence for the big bang theory?