Hydrogen is generated by passing hot steam over iron, which oxidizes to form Fe3O4 according to the following equation. 3 Fe (s) + 4 H2O (g) ⟶ 4 H2 (g) + Fe3O4 (s)
How many moles of hydrogen will form by reaction of excess steam with 335 grams of iron?
a) 447
b) 6.00
c) 16.1
d) 8.00

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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