How many moles would 1.00 x10^23 molecules of methane represent

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Me i dont know what to do! 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.