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The Ideal Gas Law is one of the Equations of State. Although the law describes the behavior of an ideal gas, the equation is applicable to real gases under many conditions, so it is a useful equation to learn to use. The Ideal Gas Law may be expressed as: PV = NkT.
But gas is gas. There's really no such thing as gas that's bad for your car, said Earl Baker, AAA of Oregon and Idaho's automotive expert. All retail fuel must meet federal, state and industry environmental and quality standards, Baker said. It's OK to buy based on the price..