Fertilizer contain nitrogen, which plants need to help them grow. One important fertilizer which is rice in nitrogen is ammonium nitrate, which formula given below. Calculate the percentage of nitrogen, hydrogen and oxygen.

1) this is the structure in the cell nucleus that houses a cell's genetic information

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite