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dimulka [17.4K]
3 years ago
9

Experiments in which electricity was discharged into a vessel containing hydrogen gas, water vapor, methane, and ammonia were co

nducted by _____.
Chemistry
1 answer:
alexdok [17]3 years ago
7 0

Answer:

Stanley Miller and Harold Urey

Explanation:

Experiments in which electricity was discharged into a vessel containing hydrogen gas, water vapor, methane, and ammonia were conducted by Miller and Urey.

Biochemists Stanley Miller and Harold Urey conducted an experiment in the 1950s which revealed many organic compounds can be spontaneously formed by simulating the early atmosphere conditions of Earth.

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A salad including lettuce, tomatoes, and onions would be classified as a _________.
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The compound gallium phosphide (Ga P) is a compound semiconductor having mixed ionic and covalent bonding. The electronegativiti
alexandr1967 [171]

Answer:  The fraction of the bonding that is ionic is 0.08875.

Explanation:

Percentage ionic character is calculated using the formula:

% ionic character =[16\times \Delta E_N + 3.5\times (\Delta E_N)^2]

Where, \Delta E_N = electronegativity difference

Given : The electronegativities for Ga and P are 1.6 and 2.1 respectively.

Thus \Delta E_N = electronegativity of phosphorous - electronegativity of galium = 2.1 -1.6 = 0.5

Therefore,

%ionic character  = [16\times 0.5 + 3.5\times (0.5)^2]=8.875

Fraction of ionic bond =\frac{8.875}{100}= 0.08875

The fraction of the bonding that is ionic is 0.08875.

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3 years ago
Describe the properties of the compound in sugar, and Compare the properties of the
kogti [31]

Answer: Sodium chloride is an ionic solid, and when it dissolves in water, its individual sodium and chloride ions are dissociated from one another. Sugar molecules, on the other hand, maintain the bonds between their constituent atoms when dissolved, and thus remain as whole molecules in the solution.

Explanation: Here's why: Salt is about 25% more dense than sugar. Therefore a teaspoon of salt weighs more than a teaspoon of sugar by almost 25%. Your dissolving test would not be accurate because you would be starting out with a larger mass of salt than sugar.

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3 years ago
Why can’t the calvin cycle run if the light reactions don’t occur?
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Answer:

Because the Calvin cycle is dependent on the the product from light reaction.

Explanation:

The Calvin cycle is the light independent phase of photosynthesis during which carbon is fixed. This step requires energy generated during the light dependent phase of the photosynthesis.

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4 years ago
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