What is one result of a chemical change?

A. Energy is created.

B. A new material is formed.

C. Materials change from one state to another.

D. Elements are permanently destroyed.

Which species should have the shortest bond length? A.) N2 B.) O2 C.) SO2 D.) SO3

If one meter equals 100 million years than what does 1 cm equal to?

Calculate the mass of potassium sulfate needed to produce 115ml of a 1.34M solution (molarity problem)

For the reaction 2Co3 + (aq) + 2Cl - (aq) →2Co2 + (aq) + Cl2 (g). E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are [Co3+] = 0.765 M, [Co2+] = 0.369 M, and [Cl-] = 0.486 M, and the pressure of Cl2 is PCl2 = 9.

Tropical fish owners must keep the water in the tank from getting too warm or the fish will die. Why is this true?

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?