Taken from a dictionary: "in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it."
If a lightbulb is powered by something like a C battery, the chemical energy from the battery acid is transformed into light and heat energy in the lightbulb. If it's powered by a potato (a common science project for kids) the stored chemical energy that the potato gets from sunlight does the same thing as the acid.
When the reaction N₂ + 3 H₂ ⇌ 2 NH₃ is at dynamic equilibrium, Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
The reaction is at dynamic equilibrium.
N₂ + 3 H₂ ⇌ 2 NH₃
Which statement is correct?
- The solution has the same concentrations of nitrogen gas and ammonia. NO. Even though we don't know the equilibrium constant, it is unlikely that N₂ and NH₃ have the same concentrations at equilibrium.
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Nitrogen and hydrogen combine at the same rate that ammonia breaks down. YES. At the equilibrium, the forward rate is equal to the reverse rate.
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The solution has the same concentrations of nitrogen and hydrogen gases. NO. Even though we don't know the equilibrium constant, it is unlikely that N₂ and H₂ have the same concentrations at equilibrium.
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Both directions of the reaction have stopped. NO. The reactions don't stop because the equilibrium is dynamic.
When the reaction N₂ + 3 H₂ ⇌ 2 NH₃ is at dynamic equilibrium, Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
Learn more: brainly.com/question/17433141
M (O) = M x n
M (O) = 16g/mol
n (O) = 3 x n (NaHCO3)
n (NaHCO3) = m/M
m (NaHCO3) = 0.72g
M (NaHCO3) = 23 + 1 + 14 + 16 x 3 = 86g/mol
n (NaHCO3) = 0.72/86 = 0.008372mol
n (O) = 3 x 0.008372 = 0.02512
m (O) = 16 x 0.02512 = 0.402g
