Homework 18-problems - stewart(jrs7354 Homework 18...

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stewart (jrs7354) – Homework 18 – erskine – (56175)1Thisprint-outshouldhave19questions.Multiple-choice questions may continue onthe next column or page – find all choicesbefore answering.00110.0pointsSuppose a new Jupiter-like planet is discov-ered which has an average radius of 10.93times as big as the Earth’s, and has a mass318.3 times the mass of the Earth. Comparethe mass density (densitymass/volume) ofthe new planet to that of the Earth. The newplanet’s mass density is approximately1.None of these2.the same as Earth’s3.0.01 times Earth’s density4.0.25 times Earth’s density5.4 times Earth’s density
friend blows up another balloon with heliumgas until it has a diameter of 13 inches. Airconsists mostly of O2and N2molecules, whilehelium gas consists of He atoms. Assume thepressure in each balloon is the same.What is the ratio the number of heliumatoms to the total number of O2and N2

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