please show work so i can lean how to do it. Thank you :)

41. Give the empirical formula that corresponds to each molecular formula. (a) C2H6 (b) N2O4 (c) C4H6O2 (d) NH3

45. Classify each compound as ionic or molecular. (a) Sodium chloride (b) Hydrogen Sulfide (c) Carbon tetrachloride (d) Ammonium chloride

49. What are the basic unitssingle atoms, molecules, or formula unitsthat compose each substance? (a) BaBr2 (b) Ne (c) I2 (d) CO

53. Write a formula for the ionic compound that forms from each pair of elements. (a) sodium and sulfur (b) strontium and oxygen (c) aluminum and sulfur (d) magnesium and chlorine

57. Write formulas for the compounds formed from the element on the left and each of the elements on the right. (a) Li N, O, F (b) Ba N, O, F (c) Al N, O, F

61. Name each ionic compound. In each of these compounds, the metal forms more than one type of ion. (a) FeO (b) CoF3 (c) SnF4 (d) HgCl2

65. Name each ionic compound containing a polyatomic ion. (a) Ba(NO3)2 (b) Pb(C2H3O2)2 (c) NH4I (d) KClO3 (e) CoSO4 (f) NaClO4

69. Write a formula for each ionic compound. (a) copper(II) bromide (b) silver nitrate (c) potassium hydroxide (d) sodium sulfate (e) potassium hydrogen sulfate (f) sodium hydrogen carbonate.

73. Write a formula for each molecular compound. (a) carbon monoxide (b) disulfur tetrafluoride (c) dichlorine monoxide (d) phosphorus pentafluoride (e) boron tribromide (f) diphosphorus pentasulfide

77. Determine whether each acid is a binary acid or an oxyacid and name each acid. If the acid is an oxyacid, provide the name of the oxyanion. (a) HNO2(aq) (b) HI(aq) (c) H2SO4(aq) (d) HNO3(aq)