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Shalnov [3]
4 years ago
9

Relationship between boiling temperature and vapour pressure

Chemistry
1 answer:
Ronch [10]4 years ago
3 0

Answer:

The higher the vapor pressure of a liquid at a given temperature, the lower the normal boiling point of the liquid.

Explanation:

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What amount of heat is removed to lower the temperature of 80 grams of water from 75º C to 45º C? The specific heat of liquid wa
Sindrei [870]

Answer:The correct answer option A.

Explanation:

Q= m\times c\times \Delta T

Q= heat removed from the water

m= mass of the water = 80 grams

c = heat capacity of water= 4.18 J/g°C      

\Delta T={\text{Change in temperature}}=45^oC-75^oC=-30^oC  

Q=80g\times 4.18J/g^oC\times(-30^oC)

Q = -10,032 joules \approx -10,000 Joules

Negative sign indicates that heat was removed from the water.

Heat removed from the water of 80 gram of water is 10,032 Joules.Hence, the correct answer option A.

8 0
3 years ago
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Calculate the percent yield of a reaction where a student collected 16.8 grams of product and was expecting to collect 49.7 gram
masya89 [10]

Answer:

\boxed{\text{33.8 \%}}

Explanation:

\text{\% yield} = \dfrac{\text{actual yield}}{\text {theoretical yield}} \times\text{100 \%}

Data:

        Actual yield = 16.8 g

Theoretical yield = 49.7 g

Calculation:

\text{\% yield} = \dfrac{\text{16.8 g}}{\text {49.7 g}} \times\text{100 \%} = \boxed{\textbf{33.8 \%}}

8 0
3 years ago
How many Oxygen Atoms &amp; Lithium Atoms Are in 4Li2O?<br> Please Help!
Advocard [28]

Answer:

8 lithium atoms and 4 oxygen atoms

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3 years ago
How does water affect the growth of a plant?
irina1246 [14]

Answer:

Water transports important nutrients throughout the plant.

Explanation:

Much like blood in an animal, water is necessary for a plants survival, as it transports important nutrients from the soil all through the plant's stems and leaves.

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4 years ago
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Which of the following compounds is an electrolyte?
docker41 [41]
The best and most correct answer among the choices provided by the question is the second choice , b. sodium hydroxide .
Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.
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4 years ago
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