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PolarNik [594]
2 years ago
15

Assume that the biocapacity of Earth does not change and that human population growth continues to increase. How will people's e

cological footprints need to change in order to most effectively sustain our population?

Chemistry
2 answers:
Alexandra [31]2 years ago
5 0
A. The Average Ecological footprint will need to decrease . 6-11-18
uranmaximum [27]2 years ago
3 0

Answer:The correct answer is option A.

Explanation:

Ecological foot print: The impact of the person or the community on the environment which is expressed in the terms of land required to sustain, use of natural resources done by them.

The ecological foot prints increases with an increase in the population of the group or nation.This is because with increase in population ,demand of basic necessities will increase which will further  increase use of all kind resources.The consecutive use of resources will decrease the amount resource or will lead to exhaustion of resource.

if the population of earth increases it will increase the average ecological foot print due to which sustaining on the Earth will become difficult and inefficient.

So in order to deal with this the average ecological footprint will required to decrease.Hence correct answer is option A.

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A student is given a sample of a blue copper sulfate hydrate. He weighs the sample in a dry covered porcelain crucible and got a
Nata [24]

Answer:

There are present 5,5668 moles of water per mole of CuSO₄.

Explanation:

The mass of CuSO₄ anhydrous is:

23,403g - 22,652g = 0,751g.

mass of crucible+lid+CuSO₄ - mass of crucible+lid

As molar mass of CuSO₄ is 159,609g/mol. The moles are:

0,751g ×\frac{1mol}{159,609g} = 4,7052x10⁻³ moles CuSO₄

Now, the mass of water present in the initial sample is:

23,875g - 0,751g - 22,652g = 0,472g.

mass of crucible+lid+CuSO₄hydrate - CuSO₄ - mass of crucible+lid

As molar mass of H₂O is 18,02g/mol. The moles are:

0,472g ×\frac{1mol}{18,02g} = 2,6193x10⁻² moles H₂O

The ratio of moles H₂O:CuSO₄ is:

2,6193x10⁻² moles H₂O / 4,7052x10⁻³ moles CuSO₄ = 5,5668

That means that you have <em>5,5668 moles of water per mole of CuSO₄.</em>

I hope it helps!

5 0
2 years ago
The enthalpy of formation of water is –285.8 kJ/mol. What can be inferred from this statement?
LiRa [457]
A negative formation enthalpy means that the reaction is exothermic, or that heat is released during the process.
(C,)
4 0
2 years ago
Read 2 more answers
In a closed system, how will a decrease in pressure affect the following reaction: 2A(g) +2B(g) ⇌ 2C(g) + 2D(g)?
DochEvi [55]

As number of gaseous moles in reactant and prodict are same that is 4

So No change will occur

3 0
2 years ago
Read 2 more answers
Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300 °C, [
serious [3.7K]

Answer: The rate of disappearance of NO_2 is 3.5\times 10^{-5}M/s

Explanation:

The given chemical reaction is:

2NO_2\rightarrow 2NO+O_2

The rate of the reaction for disappearance of NO_2 is given as:

\text{Rate of disappearance of }NO_2=-\frac{\Delta [NO_2]}{\Delta t}

Or,

\text{Rate of disappearance of }NO_2=-\frac{C_2-C_1}{t_2-t_1}

where,

C_2 = final concentration of NO_2 = 0.00650 M

C_1 = initial concentration of NO_2 = 0.0100 M

t_2 = final time = 100 minutes

t_1 = initial time = 0 minutes

Putting values in above equation, we get:

\text{Rate of disappearance of }NO_2=-\frac{0.00650-0.0100}{100-0}\\\\\text{Rate of disappearance of }NO_2=3.5\times 10^{-5}M/s

Hence, the rate of disappearance of NO_2 is 3.5\times 10^{-5}M/s

6 0
2 years ago
On the graph, indicate the distance that corresponds to the bond length of the N2 molecule by placing an X on the horizontal axi
Brut [27]

Answer:

Check the image in the file attached below.

Explanation:

The objective of this question is to use the diagram provided to indicate the distance that corresponds to the bond length of the N2 molecule by placing X on the horizontal axis.

The bond length shows the distance of the bonds between the nuclei of the bonded atoms between the N2 molecule and O2 molecule. From the diagram, we can see that the bond length of O2 shows a greater tendency over the N2 molecule and it also have higher potential energy than the N2 molecule.

6 0
2 years ago
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