What Is the Density of a Mixture of 90% Air

question 38

Multiple Choice

What is the density of a mixture of 90% air (density air 1.20 kg/m³) and 10% helium (density of 0.180 kg/m³) ?

• A) 0.680 kg/m³
• B) 0.750 kg/m³
• C) 0.980 kg/m³
• D) 1.098 kg/m³
• E) 1.103 kg/m³

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