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GaryK [48]
2 years ago
15

1. It is the place near the coast where sea water and fresh water mixes and is called “nurseries

Chemistry
1 answer:
lawyer [7]2 years ago
4 0

Answer:

Estuaries are often called the “nurseries of the sea”

Explanation:

Because so many marine animals reproduce and spend the early part of their lives there.

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An aqueous solution of a certain chemical is found to boil at 104.5 oC. At what temperature is this solution likely to freeze? T
xeze [42]

Answer:

16.4 °C

Explanation:

Boiling point elevation is the phenomenon in which the boiling point of a solvent will increase when another compound is added to it; meaning that athe resultant solution has a higher boiling point than its pure solvent.

Using the ebullioscopic constant,

ΔT = m * i * Kb

Where,

Δ T is the temperature difference between the boiling point of the solution, Temp.f and boiling point of the pure solvent, Temp.i

Kb is the ebulliscope factor of water = 0.510 °C.kg/mol

i is the van hoffs number = 1

m is the molality in mol/kg.

Calculating the molality of the solution,

Temp.i = 100°C

Temp.f = 104.5 °C

= 4.5/(1*0.510)

= 8.8235 mol/kg

Freezing point depression is defined as the decrease in the freezing point of a solvent on the addition of a solute.

Using the same equation, but kf = 1.86 °C.kg/mol

ΔT = m * i * Kf

Temp.i = freezing point of water = 0°C

Temp.f = (8.8235*1.86) - 0

= 16.412 °C

Freezing point of the solution = 16.4 °C

3 0
3 years ago
Why must chemical equations be balanced?
Elina [12.6K]

Answer:

to validate the law of conservation of mass as total no. of reactants must be equal to the total no. of products

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Which of the following is a product of the photosynthesis reaction?
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A.glucose is a product of the photosynthesis reaction carbon dioxide is a reactant.

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What may be expected when K < 1.0?
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The reaction will generally form more reactants than products.
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Sulphur Dioxide. Toxic. Don't eat it.
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