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Questions in chemistry

📝 Answered - Which formula represents an unsaturated hydrocarbon? Picture I How many pairs of electrons are shared between the two nitrogen atoms? Picture II I NEED EXPLANATION FOR BOTH QUESTIONS, PLEASE HELP ME! :)

📝 Answered - 50 grams of acetic acid [tex]C_2H_4O_2[/tex] are dissolved in 200 grams of water. Calculate the weight percentage and mole fraction of the acetic acid in the solution.

📝 Answered - Ammonium phosphate, [tex](NH_4)_3PO_4[/tex], is a strong electrolyte. What will be the concentration of all the ions in a 0.9 M solution of ammonium phosphate?

📝 Answered - What is the oxidation number of Mn in [tex]$KMnO_4$[/tex]? A. -7 B. -3 C. 0 D. +3 E. +7

📝 Answered - How might radar images help to reduce damage from an approaching storm?

📝 Answered - What does the number next to isotopes signify?

📝 Answered - How can you tell isotopes of the same element apart?

📝 Answered - How can you tell just by looking whether a mixture in water is a solution or a suspension?

📝 Answered - What happens to the average kinetic energy of the water molecules in your body when you have a fever?

📝 Answered - Five liters of gas at STP have a mass of 12.5 g. What is the molecular mass of the gas? A. 12.5 g/mol B. 25.0 g/mol C. 47.5 g/mol D. 56.0 g/mol E. 125 g/mol