What is a cell membrane
2 answers:
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Answer:
a) CO₂: <em>21,9%; </em>CO: <em>7,0%; </em>CH₄: <em>18,2%; </em>H₂: <em>0,8%; </em>N₂: <em>52,1%</em>
b) 24,09 g/mol
Explanation:
a) It is posible to obtain the composition of the gas mixture in weight% using molecular mass of each compound, thus:
12% CO₂× = <em>528,1 g</em>
6% CO× = <em>168,1 g</em>
27,3% CH₄× = <em>438,2 g</em>
9,9% H₂× = <em>20,0 g</em>
44,8% N₂× = <em>1254,4 g</em>
The total mass of the gas mixture is:
528,1g + 168,1g + 438,2g + 20,0g + 1254,4g = <em>2408,8 g</em>
Thus composition of the gas mixture in weight% is:
CO₂: ×100 = <em>21,9%</em>
CO: ×100 = <em>7,0%</em>
CH₄: ×100 = <em>18,2%</em>
H₂: ×100 = <em>0,8%</em>
N₂: ×100 = <em>52,1%</em>
b) The average molecular weight of the gas mixture is determined with mole % composition, thus:
0,12×44,01g/mol + 0,06×28,01g/mol + 0,273×16,05g/mol + 0,099×2,02g/mol + 0,448×28g/mol = <em>24,09 g/mol</em>
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There will be 89.865 grams of Ar. If you put it in sig figs, it will be rounded to 89.9g At.
Answer:
In the three-dimensional structure of methane, CH₄, the hydrogen atoms attached to a carbon atom are aligned <span><u>at the corners of a Tetrahedron</u>.
Explanation:
In Methane (CH</span>₄) the central atom (carbon) is bonded to four hydrogen atoms. So, the central atom is having four electron pairs and all pairs are bonding pairs and lacks any lone pair of electron. According to Valence Shell Electron Pair Repulsion (VSEPR) Theory the central atom with four bonding pair electrons and zero lone pair electrons will attain a tetrahedral geometry with bond angles of 109°. Hence, the shape of CH₄ is tetrahedral.
In the three-dimensional structure of methane, CH₄, the hydrogen atoms attached to a carbon atom are aligned <span><u>at the corners of a Tetrahedron</u>.
Explanation:
In Methane (CH</span>₄) the central atom (carbon) is bonded to four hydrogen atoms. So, the central atom is having four electron pairs and all pairs are bonding pairs and lacks any lone pair of electron. According to Valence Shell Electron Pair Repulsion (VSEPR) Theory the central atom with four bonding pair electrons and zero lone pair electrons will attain a tetrahedral geometry with bond angles of 109°. Hence, the shape of CH₄ is tetrahedral.