For the reaction 2 N2(g) + 3 H2(g) ? 2 NH3(g) which of the following can be determined using only the coefficients of the balanced chemical equation?
A) the number of molecules of NH3 obtained if 4.2 mol of N2 react completely to form NH3
B) the number of moles of NH3 obtained if 4.2 mol of N2 react completely to form NH3
C) both a and b
D) neither a nor b
B
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What happens to the surface area of exposed rock if a rock is fractured?
A) There are more pieces, but the surface area does not change. B) The surface area does not change because the volume does not change. C) The surface area increases as the rock is fractured. D) The surface area decreases as the rock is fractured.
A paper or digital record of surface and body wave motion is called a
A) seismogram. B) seismologist. C) seismic wave. D) seismometer.
Referring to Map 9.8.5, which countries would be more likely to be able to pay their loans back?
A) Brazil and India B) Mexico and Argentina C) Kazakhstan and Sudan D) Peru and Mongolia E) Papua New Guinea
A(n) ____________________ is a mass of exposed bedrock
Fill in the blank(s) with correct word