If 2.34 g of nacl was formed how many moles of nahco3 must have been used in the reaction? (report only the numerical portion of your answer [i.
e. leave off the units] to 3 significant digits)

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

When balancing a chemical equation:

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?