Calculate the pH of a buffer that is 0.205M in NaHCO3 and 0.285M in Na2CO3.

Earthquakes occur along the San Andreas Fault in California. Which statement best describes plate motion in that area during the time between earthquakes? a. Plate motion stops; stress and potential energy between the plates decrease. b.

Which K values would indicate that there is more B than A at equilibrium? A) K=2*10^5 B) K=.4 C) K=8000 D) 6*10^-7

This is a random error/change in the DNA sequence. These may be inherited or occur in cells during the lifetime of the organism.

Which term describes the conversion of a solid directly to a gas, without passing through the liquid state?

Name four metals and non-metals, and state one major use of each

Which earth cycle does the suns energy drive

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of

Why are the elements in groups 3 to 12 often used to make dyes?

What is not needed for corrosion of metals? a. oxygen c. water b. ions d. sunlight