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3 years ago

What could reduce the heat island effect around cities?

Chemistry

1 answer:

melamori03 [73]3 years ago

5 0

Answer: (D.) Planting Roof gardens

Explanation: I'm really hoping you get this right but the reason of my answer is because Trees, green roofs, and vegetation can help reduce urban heat island effects by shading building surfaces, deflecting radiation from the sun, and releasing moisture into the atmosphere.

You might be interested in

How many equivalent lewis structures are necessary to describe the bonding in no2cl?

bogdanovich [222]

Answer:

The correct answer is "two".

Explanation:

The main bondings that has an effect in a Lewis structure in NO2Cl are the double bondings occurring between the Oxygen atoms and the Nitrogen atom. Since the NO2Cl compound has two oxygen atoms attached to the nitrogen atom, two equivalent lewis structures will be necessary to describe it. I attached an example of two equivalent Lewis structure corresponding to a NO2 molecule.

6 0

3 years ago

You were rushing to get to school on time and dropped your breakfast food! Choose one atom in that food item and explain the sto

OLga [1]

Answer:

I am going to chose your apple on your breakfast plate. Somebody plantes the apple seed. The apple tree takes time to grow. Once the apples are ready to be picked they are picked. Then the apples are sorted and go off to different schools like your school. Which is where you pick the apple up and put it on your plate.

Explanation:

3 0

3 years ago

In an investigation that uses the scientists method, which step immediately follows asking a question

Otrada [13]

The answer to your question is:

~Creating a hypothesis.

I hope this helps!!!

5 0

3 years ago

Complete the following paragraph.

gladu [14]

Explanation:

the stationary phase in TLC is a silica gel coated metal plate or paper.

The individual component of the mixure will travel a greater distance up the plate, resulting in a Rf value for the component.

the p-Xylene spot will travel a greater distance as it is the lighter component

Bromobenzene will travel least as it is the heavier component.

thin layer chromatography (TLC) is a type of chromatographic seperation technique that is based on the molecular size of components. the Rf value is the distance covered by the component relative to that travelled by the solvent which is the mobile phase

3 0

4 years ago

Calculate the energy released when 24.8 g Na2O reacts in the following reaction.

gizmo_the_mogwai [7]

Answer:

= 48.077 kcal

Explanation:

The balanced equation is :

$Na_{2}O(s)+2HI(g)\rightarrow 2NaI(s)+H_{2}O(l)$

$\Delta H=-120Kcal$

Since the stoichiometric coefficient of Na2O = 1 hence its heat is

-120 Kcal/mol rather -120 Kcal only.

This means when 1 mole of the Na2O is burned , then 120 kcal of energy is released .

Molar mass of Na2O = 2(mass of Na) + 1(mass of O)

= 2(22.98)+16

=61.97 gram/mol

Molar mass = mass of the substance in grams present in 1 mole of it.

In 1 mole of Na2O , 61.97 gram of it is present.

Hence

61.97 gram of Na2O = -120 Kcal of heat is released

1 gram of Na2O =

$/frac{-120kcal/mol}{61.9gram/mol}$

So,

24.8 gram of Na2O will produce,

$/frac{-120kcal/mol}{61.9gram/mol}/times 24.8$

= -48.077 kcal of heat

You can also proceed through mole concept:

Calculate number of moles in 24.8 gram Na2O

$Moles=\frac{given\ mass}{Molar\ mass}$

Moles of Na2O = 24.08/61.9 = 0.4007 moles

So these many moles will produces:

0.4007 x 120

=-48.07

7 0

4 years ago