For which of the following reactions is S° > 0.1. CH4 (g) + H2O (g) 3H2 (g) + CO (g) 2. NH4HS (s) NH3 (g) + H2S (g) 3. C2H4 (g) + H2O (g) CH3CH2OH (g) 4. 2CO2 (g) + N2 (g) 2CO (g) + 2NO (g) 5. H2CO (g) + O2 (g) CO2 (g) + H2O (l)

Which of the following is a binary compound? A. NH4+ B. H2SO4 C. 02 D. Cao

What is the mass of 2.3 moles of aluminum (Al) ?

A linear graph with a slope of zero would indicate which of the following?

What is the symbol for molarity?

How many neutrons exist in the isotope sodium-23?

Which of these statements describes one way that a nonrenewable energy resource is obtained? A. Wind turbines are placed on a coastline. B. Trees are cut down in a forest. C. Water is dammed on a river. D. Uranium is mined from rock.

Octane, c8h18, is a component of fuel used in internal combustion engines. the dominant intermolecular forces in octane are

Element Y has two natural isotopes Y-63 (62.940 amu) and Y-65 (64.928 amu). Calculate the atomic mass of element Y, given the abundance of Y-63 is 69.17%?

FeCl3 (aq) + Na3PO4 (aq) - - > FePO4 (s) + NaCl (aq) [unbalanced]

How many 3d electrons are in an atom of each element? fe express your answer as an integer?