Which ion is part of every amino acid?

If you started with 50.0 grams of h2s and 60.0 grams of o2, how many grams of s8 would be produced, assuming 98 % yield?

What type of candy would disolve in dry ice or boiling water

Which of the following is primarily responsible for holding water molecules together in the liquid state? Dispersion forces Hydrogen bonds Ionic bonds Polar covalent bonds

Which process of a volume of solution of known concentration to determine the concentration of another solution

Which procedure could a student use to examine an intensive property of a rectangular block of wood? Find the mass. Record the length. Measure the volume. Determine the density.

Which usually has a higher temperature? A city or the areas around the city?

Toluene and pyridine form ideal solutions. Consider a solution of toluene and pyridine prepared at 25°C. Assuming that the mole fractions of toluene and pyridine in the vapor phase are equal, calculate the composition of the solution.

Formula for water what does the lack of a subscript after those O indicate

Why do the chemical properties cycle through each period? Every eighth element starting with hydrogen restarts the transition from metal to inert gas. Elements with atomic numbers which are multiples of eight start a new period.

Which statement correctly describes the Ka of a weak acid? The Ka is large, and the equilibrium favors products. The Ka is large, and the equilibrium favors reactants. The Ka is small, and the equilibrium favors products.