Explain why people are building green roofs to live healthier lives.

Chemistry

1 answer:

zubka84 [21]2 years ago

4 0

Answer:

Green roofs help reduce the Urban Heat Island Effect, a condition in which urban environment absorb and trap heat. A green roof's plants remove air particulates produce oxygen and provide shade. Another important benefit of green roofs is their ability to reduce and slow stormwater runoff in urban environment.

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In a boys hostel, 1206 eggs were bought for breakfast for the students. How many moles of eggs does this represent?

Evgen [1.6K]

Answer:

6.022×1023

Here, it has been asked how many eggs are in one mole of eggs. The eggs represent the unit which can be atom, ion or molecule. So by the definition of mole, 6.022×1023number of eggs are present in one mole of eggs.

8 0

2 years ago

Fill in the blanks and balance with the correct coefficient

MrRissso [65]

$\huge\mathrm{ \underline{Answer}}࿐$

The Balanced equation will be :

$\mathrm{ \boxed2Fe + \boxed3Cl_2 \rightarrow \boxed2FeCl_3}$

The Coefficients are :

$Fe - 2$

$Cl_2 - 3$

$FeCl_3 - 2$

_____________________________

$\mathrm{ \#TeeNForeveR}$

4 0

3 years ago

White phosphorus is composed of tetrahedral molecules of P4 in which every P atom is connected to three other P atoms. In the Le

Dmitrij [34]

Answer:

In the Lewis structure of P4 there are 6 bonding pairs and 4 lone pairs of electrons.

Explanation:

The structure of tetrahedral molecule of P4 is provided below.

Each phosphorus atom has 5 valence electrons out of which 3 electrons involve in bonding and the rest 2 electrons exist as a lone pair that does not involve in bonding.Hence each phosphorus atom has one lone pair.In P4 molecule there are phosphorus atoms and hence 4 lone pairs in total.

As you can see in the figure, each phosphorus atom is bonded to the other three atoms.A bond is formed when two atoms share one electron each and the pair is called bonding pair.

From the figure we can see that there are 6 bonds in total.Each bond consist of one bonding pair of electrons and hence in total there are 6 bonding pairs of electrons.

Hence in a P4 molecule there are six bonding pairs and 4 lone pairs of electrons.