HELP PLZ! CHEM!
“While calculating the empirical formula for a compound containing elements X and , Annette found the element ratio to be X(1) Y(1.3) how would the empirical formula be written properly?”
-X1Y8
-X5Y8
-X3Y4
-X3Y8
-X2Y3

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3