1 N2 (g) + 3 H2 (g) --> 2NH3(g). What volume of hydrogen gas (at STP) is required to produce 25 grams of ammonia (NH3)? *
33 Liters
1.1 Liters
O 49 Liters
25 Liters

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0172 m solution. if the ph of the resulting solution is 2.39 at 20 °c, determine the pka for the acid.

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false