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Kaylis [27]
3 years ago
14

A cell is placed in a salt solution that has the same concentration as the inside of the cell. What will happen to the cell?

Chemistry
1 answer:
nata0808 [166]3 years ago
4 0

Answer:

d

Explanation:

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A 0.334 g sample of an unknown halogen occupies 109 mL at 398 K and 1.41 atm. What is the identity of the halogen?
kolezko [41]
We can use the ideal gas law equation for the above reaction to find the number of moles present 
PV = nRT 
P - pressure - 1.41 atm x 101325 Pa/atm = 142 868 Pa
V - 109 x 10⁻⁶ m³
R - 8.314 Jmol⁻¹K⁻¹
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substituting the values in the equation 
142 868 Pa x 109 x 10⁻⁶ m³ = n x 8.314 Jmol⁻¹K⁻¹ x 398 K
n = 4.70 x 10⁻³ mol
number of moles = mass present / molar mass
molar mass = mass / number of moles  
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halogens exist as diatomic molecules 
Therefore atomic mass - 71.06 / 2 = 35.5 
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unknown halogen is Cl
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Why is the melting of ice a physical change? It changes the chemical composition of water. It does not change the chemical compo
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