\text{Density} = \frac{\text{Mass}}{\text{Volume}}\\ The way to figure the weight of air in a typical room, maybe 10 feet by 12 feet by 8 feet high, is to find the volume of the room which is filled with the air and find the weight of each small unit of volume and then apply the definition of density which is equal to mass divided by volume. The equivalent molar mass of air (82%N2 and 18% O2) is 28.7 g/mol. 56 neutrons b. } - Lesson for Kids, Law of Conservation of Matter Lesson for Kids, Changing States of Matter Lesson for Kids, Mixtures & Solutions Lesson for Kids: Definitions & Examples, States of Matter: Solids, Liquids, Gases & Plasma, Density Lesson for Kids: Definition & Facts, Gravity Lesson for Kids: Definition, Facts & Law, Physical Change Lesson for Kids: Definition & Examples, Chemical Change Lesson for Kids: Definition & Examples, Mass and Volume: Formulas, Unit Conversion & Practice Problems, How to Read a Thermometer: Lesson for Kids, FTCE Biology Grades 6-12 (002): Practice & Study Guide, SAT Subject Test Biology: Practice and Study Guide, Alberta Education Diploma - Science 30: Exam Prep & Study Guide, Human Anatomy & Physiology: Help and Review, DSST Health & Human Development: Study Guide & Test Prep, High School Biology: Homework Help Resource, UExcel Anatomy & Physiology: Study Guide & Test Prep, Biological and Biomedical All rights reserved. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. The compound K2O2 exists. {/eq} are the dimensions of the room are. Given that, Universal gas constant R = 8.314 J/ mol K, Boltzmann’s constant kB = 1.38 x 10-23 J/K Services, Working Scholars® Bringing Tuition-Free College to the Community. PV=nRT. Which of the following compounds is not an ionic... 90Sr2+ has: a. \rho = \frac{m}{V} If you react 22.05 grams of A and obtain 91.27... A particular oral contraceptive contains 0.046 mg... What atom has 15 electrons and 19 neutrons? Number of molecules in a room 24 m 3, N = 5 x 10 26. Therefore, Mass of an air molecule = 28.2 / 5 x 10-26 = 5.6 x 10-26 kg. You may need to download version 2.0 now from the Chrome Web Store. where am i going wrong? • answer! The temperature in the room was 293 deg K. The atmospheric pressure was 1.00 atm. Which ionic formula is incorrect? This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here! All other trademarks and copyrights are the property of their respective owners. Find out the mass of the air in a room 3.00m by 4.00m by 5.00m given that the temperature is 200 C at atmospheric pressure (1atm = 101000 Pa) Given that, Universal gas constant R = 8.314 J/ mol K, Boltzmann’s constant kB = 1.38 x 10-23 J/K Mass to mole ratio of air = 0.029 kg/mol © copyright 2003-2020 Study.com. © BrainMass Inc. brainmass.com October 1, 2020, 4:26 pm ad1c9bdddf, Best Restaurants in the US: 5-Number Summary, Boxplots, and Correlation Coefficients, Pressure, Temperature and Absolute Zero Calculations. Your IP: 136.243.145.137 A chemist can determine... How many moles of methanol (CH3OH) are in a... How many grams of ethanol (CH3CH2OH) are there in... What is Volume in Science? Cloudflare Ray ID: 5f174978db801ea5 Another way to prevent getting this page in the future is to use Privacy Pass. Answer in MS Word format. • Mass of an air molecule. Answer to: Calculate the mass of air in a room measuring 5 m \times 8 m \times 10 m if the density of air is 1.3kg/m cube. {/eq}, Become a Study.com member to unlock this Calculate the mass of air in a room measuring {eq}5 m \times 8 m \times 10 m Calculate the mass of air in the room, the height of which is 2.3m. As is turns out, the approximate density of air at sea level (and at 20 C) is 1.2 kilograms per cubic meter. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. Take the density of air as 1.3 kg m-3. {/eq} if the density of air is 1.3kg/m cube. Sciences, Culinary Arts and Personal {eq}l\times b\times h = 5\ m \times 8\ m\times 10\ m Previously calculated room to be 1.0 x 10 -2m by 1.5 x 10 -2 m Density = mass / volume volume = (1.0 x 10 - 2) x (1.5 x 10 - 2) x 2.3 x 1.3 = 4.485 x 10 - 4 kg it's meant ot be 51.8 kg. Create your account. or\\ Density gives an idea about the amount of matter present in a given volume. Performance & security by Cloudflare, Please complete the security check to access. Find out the mass of the air in a room 3.00m by 4.00m by 5.00m given that the temperature is 200 C at atmospheric pressure (1atm = 101000 Pa) Dimensions of room=4.5 m x 3.5 m x 2.5m So ,the volume= length x breadth x height = 4.5 x 3.5 x 2.5 = 39.375 m3 Given that density of air =1.3 kg m-3 We have a relation: Mass= denstiy x volume = 1.3 x 39.375 =51.188 kg If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. When students know more about the structure of air (mainly nitrogen and oxygen) then the mass of their atoms can be estimated (they are fairly close in mass). Mass to mole ratio of air = 0.029 kg/mol, Please see the attached document for the well formatted asnwer. How to calculate the mass of air in a room ? Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. n= PV/RT = … Our experts can answer your tough homework and study questions. Figure out the cubic meters of the room and multiply that by the mass of a cubic meter of air. Step by step answer in an easy to understand format. It is given by: {eq}\displaystyle{ Mass of air molecules in a room 24 m 3, M = Vp = 24 x 1.2 kg = 28.2 kg. Which of the following compounds would you expect... An iron-56 nucleus contains: a.
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