НСPSThe table lists the properties of four different samples.SampleProperties1always boils at 100° Ccan be separated by physical means3.the entire sample has the density of 1.2 g/cm4consists of a substance dissolved in waterWhich two samples can be classified as a pure substance?O Sample 1Sample 2O Sample 3Sample 4PreviousType here to search近

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The table lists the properties of four different samples. Sample Properties 1 always boils at 100° C can be separated by physical means 3. the entire sample has the density of 1.2 g/cm2 4 consists of a substance dissolved in water Which two samples can be classified as a pure substance? O Sample 1 O Sample 2 Sample 3 O Sample 4

The table lists the properties of four different samples. Sample Properties 1 always boils at 100° C can be separated by physical means 3. the entire sample has the density of 1.2 g/cm2 4 consists of a substance dissolved in water Which two samples can be classified as a pure substance? O Sample 1 O Sample 2 Sample 3 O Sample 4

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter2: The Kinetic Theory Of Gases

Section: Chapter Questions

Problem 78AP: The air inside a hot-air balloon has a temperature of 370 K and a pressure of 101.3 kPa, the same as...

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The air inside a hot-air balloon has a temperature of 370 K and a pressure of 101.3 kPa, the same as that of the air outside. Using the composition of air as 78% N2, 21% O2, and 1% Ar, find the density of the air inside the balloon.
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If we have 16.42L of O2 gas at STP, how many moles of this gas do we have? Note: it is understood that the unit of your answer is some number of moles, however do not explicitly include units in your answer. Enter only a number. If you do enter a unit ("mol" in this case), you answer will be counted wrong. (STP means "standard temperature and pressure," which is 1 atmosphere of pressure or 101,325 Pa, and 273K).