A student following the procedure for the "Which Alkali Metal Carbonate" lab collected and recorded the following data: Mass of flask Mass of flask+unknown = 97.85 g 99.86 g Mass of graduated cylinder+ HCI(aq) 37.470 g Mass of emptied graduated cylinder = 26.941 g Mass of flask containing reaction mixture 109.55 g What was the total mass in grams of all the reactants used? What was the mass in What was the mass in grams of the unknown? 9a blos grams of the HCl(a) solution? ㄧ邪.ZTy 37.470 or 819 was the measured mass in grams the products that remained in the flask after the What reaction was complete? 164,55 1,7 97,85 What was the mass in grams of the CO2 lost? How many moles of CO2 were lost in the reaction?, Remember, the molar mass of CO2 is 44.01 g/mol.00i9l gleso Use the stoichiometric coefficients in the balanced chemical equations to determine the number of moles of alkali metal carbonate required to produce the number of moles of CO2 lost. How many moles of carbonate did the unknown sample contain? Which alkali metal is "X"? What is the molar mass (in g/mol) of X2C03? What is the molar mass of the unknown alkali metal atom "X"? Li Cor 035 x73

Add formal charges to each resonance form of NCO¯. structure A structure B Select Draw Rings More Erase Select Draw Rings More Erase C N :N = C - ö: :o: || :z: :0:

I know you don't answer graded questions and I am not looking for you to straight up give me the answer to this but how do I even start? like I said before I know that the highest peak is 16amu which is Oxygen but do I just the vertical bar as a ratio? Like the next bar to the left (15amu?) is like 90% intensity? so like 9:10 ratio? There isn't even a 15amu element so please just give me some idea where to start. The place in the book it tells you to go to read has nothing about this stuff, its about finding empirical formulas from mass or percentages.... please help me!

Compare and Contrast any two microscopy techniques.