Do mixtures have a set composistion

Which organism would be most likely to cause damage to a corn crop during a wet summer?

Molten sodium chloride is broken down in an electrolytic cell into the elements sodium and chlorine. Where do the products form? 1. Sodium forms at the cathode through oxidation, and chlorine forms at the anode through reduction. 2.

Because rusting is a spontaneous process under standard conditions, which of the following is a correct conclusion about the process

For the reaction BaSO3 (s) ↔ BaO (s) + SO2 (g), the equilibrium constant is 0.345 M. What is the concentration of SO2 at equilibrium? A. 0.035 M B. 0.070 M C. 0.280 M D. 0.420 M E. None of the Above

The student's lab manual says to mix 50 mL of his 2.0 M CaCl2 solution with 50 mL of a 3.0 M aqueous solution of sodium carbonate (Na2CO3) a. Write a balanced equation to show the reaction. Include state symbols b. What kind of reaction is this? c.

The atomic mass of carbon is 12.011 g/mol. how many atoms of carbon have that exact mass? why?

Which option is true about the effect of polarity on solubility? Select all that apply. Polar solutes dissolve better in water than in oil. Polar solutes have the greatest solubility in nonpolar solvents.

Which change results in a release of energy? 1. The melting of H₂O (S) 2. The boiling of water (L) 3. The evaporation of H₂0 (L) 4. The condensation of H₂0 (G)

What changes nitrogen gas in the air to nitrogen compounds that fall to the ground

Which element has an isotope mass number of 32 and is used as an ecological tracer?