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4 years ago

Which of these actions a sustainable practice?

Chemistry

1 answer:

tia_tia [17]4 years ago

8 0

<h2>Hello!</h2>

A sustainable practice is B. Setting usage limits on a resource

Sustainable practices are those that aim to reach an equilibrium between the use of natural resources for human development, and the preservation of the environment for future generations.

Setting usage limits on a resource is a sustainable practice because it allows for taking advantage of the resource, while providing constraints to its use, forcing the industry to be creative and develop alternative methods that take better advantage of that resource, or that use different resources (e.g. limiting fossil fuel emissions, forcing the industry to find alternative ways to generate power like solar energy).

Have a nice day!

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Write the full electron configuration of the Period 2 element with the following successive IEs (in kJ/mol):

Julli [10]

Answer:

Boron (B) is the element whose IE matches with our data.

Electronic Configuration of boron: $1s^22s^22p^1$

Explanation:

Ionization Energy (IE):

It is the minimum amount of energy which is required to remove the lose electron. If the electron is closer to the nucleus then greater amount of energy is required to remove the electron.

If we look from left to right in a period, ionization energy increases due stability of valance shell.

From the data given to us:

IE₁ = 801

IE₂ = 2427

IE₃ = 3659

IE₄ = 25,022

IE₅ = 32,822

Boron (B) is the element whose IE matches with our data.

Electronic Configuration of boron: $1s^22s^22p^1$

Boron has 5 electrons (3 in valance shell) that's why it has 5 Ionization Energies.

6 0

3 years ago

Someone please help will mark as brainliest

Tju [1.3M]

Answer: The answer is D.

Explanation: The warm water will cause the sugar to dissolve quicker.

5 0

3 years ago

How many milliliters of water at 23 °C with a density of 1.00 g/mL must be mixed with 180 mL (about 6 oz) of coffee at 95 °C so

Svetach [21]

Answer:

V H2O = 170.270 mL

Explanation:

QH2O ( heat gained) = Qcoffe ( heat ceded)

⇒ Q = m<em>C</em>ΔT

∴ m: mass (g)

∴ <em>C</em>:<em> </em>specific heat

assuming:

δ H2O = δ Coffe = 1.00 g/mL
<em>C</em> H2O = <em>C</em> coffe = 4.186 J/°C.g....from literature

⇒ Q coffe = (mcoffe)(C coffe)(60 - 95)

∴ m coffe = (180mL)(1.00 g/mL) = 180 g coffe

⇒ Q = (180g)(4.186 J/°C.g)(-35°C) = - 26371.8 J

⇒ Q H2O = 26371.8 J = (m)(4.186 J/°C.g)(60 - 23)

⇒ (26371.8 J)/(154.882 J/g) = m H2O

⇒ m H2O = 170.270 g

⇒ V H2O = (170.270 g)(mL/1.00g) = 170.270 mL

5 0

3 years ago

How does a scientist explain something when a controlled experiment cannot be carried out

alina1380 [7]

Usually the controlled experiment is the one that is not tested so they look at the experimental experiment to find the differences. Sorry if this doesn't answer your question.

5 0

4 years ago

Explain why the standard enthalpy of formation () for Cl2 (g) is zero, but its standard entropy is larger than zero.

Galina-37 [17]

The standard enthalpy of formation for chlorine is zero but the standard entropy is larger than 0 because it is the elemental state of chlorine.

The standard enthalpy of formation for chlorine is zero because cl2 is the elemental state of chlorine and it does not require any energy for the formation of the standard state of chlorine.

The entropy of any system cannot be negative. It can only be positive or zero.

The entropy of a system will become zero only at a absolute zero temperature.

That's why the entropy of chlorine in elemental state is more than zero because absolutely zero temperature can't be obtained.

To know more about entropy, visit,

brainly.com/question/6364271

#SPJ4

7 0

1 year ago