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Anvisha [2.4K]
3 years ago
14

The adult blue whale has a lung capacity 5.0\times10^3 5.0 Ã 10 3 l. calculate the mass of air (assume an average molar mass of

28.98 g/mol) contained in an adult blue whale's lungs at 0.0^\circ c 0.0 â c and 1.0 atm, assuming the air behaves ideally.
Chemistry
1 answer:
Andre45 [30]3 years ago
8 0
For this item, we need to assume that air behaves like that of an ideal gas. Ideal gases follow the ideal gas law which can be written as follow,
    PV = nRT
where P is the pressure, 
V is the volume,
 n is the number of mols,
R is the universal gas constant, and 
T is temperature

In this item, we are to determine first the number of moles, n. We derive the equation,
       n = PV /RT
Substitute the given values,

    n = (1 atm)(5 x 10³ L) / (0.0821 L.atm/mol.K)(0 + 273.15)
    n = 223.08 mols

From the given molar mass, we calculate for the mass of air.
   m = (223.08 mols)(28.98 g/mol) = 6464.9 g

<em>ANSWER: 6464.9 g</em>
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<h3>Further explanation</h3>

Given

ph = 2

Required

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Solution

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pH=-log[H⁺]

2=-log[H⁺]

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pH+pOH=14

pOH=14-2

pOH=12

pOH=-log[OH⁻]

12=-log[OH⁻]

[OH⁻]=10⁻¹²

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7 0
4 years ago
1. In the investigation of an unknown alcohol, there was a positive Jones test and a negative Lucas test. What deductions may be
pogonyaev

Answer:

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Jones reagent behaves like a strong oxidant, where it transforms the primary alcohols into carboxylic acids and the secondary alcohols into ketones. Tertiary alcohols do not react.

With the Lucas test, tertiary alcohols react immediately producing turbidity, while secondary alcohols do so in five minutes. Primary alcohols do not react significantly with Lucas reagent at room temperature.

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3. (see the attached drawing)

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nataly862011 [7]

Answer:

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Explanation:

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The balance equation shoes mass is conserved thus followed the law of conservation of mas.

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According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

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For example:

In given photosynthesis reaction:

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