N(Cu) = 7.8x10^21/6.02x10^23
n(Cu)=0.013moles of copper
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Answer:
Doubling the volume of the reaction vessel and adding more oxygen to the reaction vessel will change the concentrations and will affect equilibrium concentrations.
Explanation:
The answer of this question is Oxygen
The number of significant figures within a number are the amount digits that are required to specify a number to a certain degree of accuracy. In the number, 0.0645 g, the 6 is the most significant figure and 4 is the second most significant figure. Therefore, rounding to two significant figures yields 0.064g.
