How come some metals loose their shine but gold doesn't

A solution of pH 3 was mixed with a solution of pH 9. What is the final pH could be?

Explain the energetic benefits of making the enzyme active site complementary to the transition state rather than to the substrate conformation. Also explain how multiple weak interactions contribute to enzyme action.

What is study of the origin and structure of the universe

How do you write a polynomial in standard form?

Which of the following has six electrons in its valence shell? oxygen nitrogen sodium neon

How many protons does one atom of sulfur have

Which shows the electron configuration for zinc (Zn) ? [Kr]5s24d10 [Kr]5s24d6 [Ar]4s23d9 [Ar]4s23d10

What is the oxidation number of chromium in the ionic compound ammonium dichromate (nh4) 2cr2o7?

Draw an ecosystem with 10 biotic and 5 abiotic factor

Which organism is responsible for cleanup in this ecosystem? coyote vulture prairie dog grasshopper or prairie grass