What is the mass of(a)6x1023 atoms of O(b)6x1023atoms of O2(c)one mole of carbon dioxide,CO2(d)two mole of silver,Ag(e)0.2 moles of silver,Ag 相关知识点: 试题来源: 解析 a)6x1023即是1mol,即1mol原子的氧元素.质量为16×1=16gb)1mol氧原子的氧气质量为 16×1=16gc)1mol的CO2 ...
A gas mixture has 1.00% by mass CO2 and 99.0% O2. What is the partial pressure of each gas if the total pressure of the mixture is 0.977 atm? A sample of N2O gas has a density of 2.65 g/L at 298 K. What must be the pressure of the gas?
Molar mass is the mass of one mole of a substance. We determine the molar masses from values on the periodic table. Answer and Explanation: Become a Study.com member to unlock this answer!Create your account View this answer Before we can sum all of the molar mass of the elements in ac...
What is the mass in grams of 1.89 x 10^25 carbon atoms? How many grams of carbon, C, would contain the same number of atoms as 39.948 g of argon, Ar? What is the mass of 1 mole of atoms of carbon? What is the mass of 7.80 x 1018 carbon atoms? How many atoms are ...
What is the heat of combustion of ethane,C_2H_6, in kilojoules per mole of ethane? Explain. What is the balanced equation for the combustion of gaseous benzene (C6H6), a natural constituent of crude oil, in which it combines with gaseous oxygen to form gaseous carbo...
The rest is 0,78 l nitrogen and 0,02 l other Gases, like CO2, noble Gases, etc. Logged yingyang New Member Posts: 7 Mole Snacks: +0/-0 Re: What does percent by volume of "GAS" really mean? « Reply #2 on: January 15, 2024, 12:04:47 PM » So, O2 that is in ...
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Using the electronegativity values on p 263, how would you know if the bond between two atoms is ionic? Show how you determine the mass of one mole of Mg (C2H3O2)2 Mass of one mole = Molar Mass Count elements and atoms Mg-1 @ 12 grams/mole= 24.3 C - 4 @ 12 grams/mole= 48.04...
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The flame is applied for 20 minutes. The test apparatus measures the following: •Temperature of exhaust gases •Volume flow in the exhaust •Light attenuation (for measurement of smoke density) •O2and CO2 mole fraction of the exhaust gases. ...