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3 years ago

What is transpiration

2 answers:

7 0

Answer: Transpiration is a process process in which plants absorb the water through their roots and then release it in the form of water vapour through small pores located in the leaves of the plants.

Explanation:

Transpiration is very important for the life in our planet.

Transpiration is define as a process in which plants absorb the water through their roots and then release it in the form of water vapour.

The process of transpiration occurs through small pores which are located in the leaves of the plants.

Therefore, this process is essential to cool plants and it helps them to mantain their temperature.

The rate of transpiration depends on the following factors:

1. The humidity.

2. The light.

3. The temperature.

4. Water in the soil.

5. Wind.

6. Soil water.

olganol [36]3 years ago

7 0

Answer AND Explanation:

Transpiration is the process by which plants lose water in the form of water vapour into the atmosphere. Water loss from plants occurs at the following sites: stomata, cuticle and lenticels. Stomatal transpiration accounts for 80-90% of the total transpiration through stomata. Most stomata are found on the leaves but may occur on epidermis of young herbaceous plants. Cuticle transpiration occurs through cuticle and constitute 20%.

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2 years ago

What is the electronegativity of this and how do you get it?

MrMuchimi

Answer:

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3 years ago

7.00 of Compound x with molecular formula C3H4 are burned in a constant-pressure calorimeter containing 35.00kg of water at 25c.

beks73 [17]

Answer:

$\Delta H_{f,C_3H_4}=276.8kJ/mol$

Explanation:

Hello!

In this case, since the equation we use to model the heat exchange into the calorimeter and compute the heat of reaction is:

$\Delta H_{rxn} =- m_wC_w\Delta T$

We plug in the mass of water, temperature change and specific heat to obtain:

$\Delta H_{rxn} =- (35000g)(4.184\frac{J}{g\°C} )(2.316\°C)\\\\\Delta H_{rxn}=-339.16kJ$

Now, this enthalpy of reaction corresponds to the combustion of propyne:

$C_3H_4+4O_2\rightarrow 3CO_2+2H_2O$

Whose enthalpy change involves the enthalpies of formation of propyne, carbon dioxide and water, considering that of propyne is the target:

$\Delta H_{rxn}=3\Delta H_{f,CO_2}+2\Delta H_{f,H_2O}-\Delta H_{f,C_3H_4}$

However, the enthalpy of reaction should be expressed in kJ per moles of C3H4, so we divide by the appropriate moles in 7.00 g of this compound:

$\Delta H_{rxn} =-339.16kJ*\frac{1}{7.00g}*\frac{40.06g}{1mol}=-1940.9kJ/mol$

Now, we solve for the enthalpy of formation of C3H4 as shown below:

$\Delta H_{f,C_3H_4}=3\Delta H_{f,CO_2}+2\Delta H_{f,H_2O}-\Delta H_{rxn}$

So we plug in to obtain (enthalpies of formation of CO2 and H2O are found on NIST data base):

$\Delta H_{f,C_3H_4}=3(-393.5kJ/mol)+2(-241.8kJ/mol)-(-1940.9kJ/mol)\\\\\Delta H_{f,C_3H_4}=276.8kJ/mol$

Best regards!

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2 years ago

Which is the best explanation for what keeps a balloon inflated Select one: a. gas particles colliding with the inside of the ba

goldfiish [28.3K]

The best explanation would be A. The reason the balloon is inflated is because its filled with gas, and the gas particles collide with the interior of the balloon to give it its shape.

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3 years ago