lease ASAP HELP NEED

Determine the empirical and molecular formulas for a compound that gives the following mass percentages on analysis: 85.59% Carbon 14.41% Hydrogen The molar mass is known ts be 28g/mol. QUESTION 8 Consider the following balanced equation: C4H8(g)+6O2(g)4CO2(g)+4H2O(g) A) If 18.00g of C4H8 are burned in 75.0g of oxygen, how many grams of H2O will be formed? B) Which species is the excess reagent and how many grams will be left over? Click Save and Submit to save and submit click Sowe All Arswers tosawe all ansurers. Classify each of the following as being a strong electrolyte, weak electrolyte or nonelectrolyte. A. HBr B. HNO2 C. C6H12O6 D. KOH E. Nal For the toolbar nrese Al T+F1n (PCI or AIT+FN+F1n (Mar) QUESTION 10 Calculate the molanty of a solution prepared by dissolving 1.56gNaCl in enough water to make 100.0mL solution. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). How many grams of KCl need to be weigher out to prepare 250.mL of a 0.425M solution? For the toolbar, press ALT+F10(PC) or ALT+FN+F10(Mac). QUESTION 12 Complete and balance the following molecular equation (including states of matter). Then write the ionic and net ionic equations. You must write all 3 on your paper for credit. However. Just submit the net ionic equation on blackboard Na2S+ZnCl2