- Simplify (3m^2n^4)^3?

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How many ground rods do I need for a short electric fence? What is the volume in L of 9.21 g sample of oxygen gas at 40.7 degree C that exerts 886.7 mmHg of pressure ? How many liters of oxygen gas are required to burn 2.97 L of acetylene (C2H2) at STP? An equation of motion is given by x=at^2+bt+c where a,b,c are unknown variables. If x=position and t= time, what are dimensions of a,b,c? ? What is the volume in mL occupied by 656 g of argon gas at STP?