Assign oxidation numbers in the following corrosion reactions for copper. Tell which substances are oxidized and which are reduced. 2Cu (s) + 1⁄2 O2 (g) → Cu2O (s) Cu2O (s) + 1⁄2 O2 (g) → 2CuO (s)

What electron configurations so atoms usually achieve by sharing electrons to form covalent bonds

Which is an indicator of poor air quality? salt bacteria fertilizer smog

What is the average atomic mass of titanium

What is the molar concentration of Cu2 + in a solution that is labelled 5 ppm Cu2+? a) 7.9x10^ (-5) M b) 7.9x10^ (-6) M c) 5.1x10^ (-6) M d) 5.5x10^ (-4) M

Which is NOT a property of metals? A. brittleness B. conductivity C. ductility D. luster

Based on your observations in the lab, what do you think happens to the majority of water (not, ice) at the poles? at the equator?

How do organisms interact with each other and how can one organism be dependent upon other species

Check Sodium inside a star is most likely formed by which process? fission fusion <<--? alpha emission Beta emission

Which of these is the main goal of any titration? to observe the effect of indicators on acids to observe the effect of indicators on bases --> (((to determine the concentration of one of the reactants))) <--- to determine the effects of a base on

How can a sea cave become a sea arch?