Show how to work it out 1. 32.5grams of NaOH (sodium hydroxide) reacts an excess of CO2 (carbon dioxide). 2NaOH(s) + CO2(g) → Na2CO3(s) + H2O(1)

a. What is the theoretical yield of Na2CO3 in grams? 43.1g Na2CO3

b. If 16.45 g of Na2CO3 is formed, what is the percent yield? 38.2%

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

How many molecules are in 6.0 moles of methane