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defon
2 years ago
8

Which of the following is NOT a benefit of using renewable energy sources?

Chemistry
2 answers:
nasty-shy [4]2 years ago
6 0
The answer would be considered D.
Afina-wow [57]2 years ago
3 0

Answer:

D, They produce fossil fuels

Explanation:

you can't just pull them out of nowhere

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The term "periodic" helps identify __________ that occur in the table, like electronegativity or atomic radii.
Montano1993 [528]

Answer:

option C= patterns

Explanation:

The periodic table is helpful to identify the element readily. All the elements are arranged properly. The elements with same physical and chemical properties are placed in same group and period. Periodic table is also helpful to predict the properties of those elements which are not discovered yet. This table is also very helpful to balance the chemical equations. The horizontal rows are called periods while vertical column are called groups. There are seven periods and eighteen groups are in periodic table.

Trends in periodic table:

As we move left to right in a period the atomic radius is decreases with increase of atomic number. The ionization energy goes to increases from left to right in period because of greater hold of nuclear charge on valance electron, so that's way more energy is required to overcome this charge and to make the atom ionic.

From left to right in period electron affinity and electronegativity also increases.

As we move top to bottom in group ionization energy decreases with increase of atomic number  because of large atomic radius. The valance electron require less energy to move free. The electron affinity and electronegativity also decreases from top to bottom.

6 0
3 years ago
A chemistry student needs of acetic acid for an experiment. He has available of a w/w solution of acetic acid in acetone. Calcul
Volgvan

Answer:

49.4 g Solution

Explanation:

There is some info missing. I think this is the original question.

<em>A chemistry student needs 20.0g of acetic acid for an experiment. He has 400.g  available of a 40.5 %  w/w solution of acetic acid in acetone.  </em>

<em> Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to 3 significant digits.</em>

<em />

We have 400 g of solution and there are 40.5 g of solute (acetic acid) per 100 grams of solution. We can use this info to find the mass of acetic acid in the solution.

400gSolution \times \frac{40.5gSolute}{100gSolution} = 162 g Solute

Since we only need 20.0 g of acetic acid, there is enough of it in the solution. The mass of solution that contains 20.0 g of solute is:

20.0gSolute \times \frac{100gSolution}{40.5gSolute} = 49.4g Solution

4 0
3 years ago
From where do nuclear power plants get uranium?
Anvisha [2.4K]

Answer:

Uranium mines operate in many countries, but more than 85% of uranium is produced in six countries: Kazakhstan, Canada, Australia, Namibia, Niger, and Russia. Historically, conventional mines open pit or underground were the main source of uranium.

Explanation:

Hope this helps

4 0
2 years ago
The cost of 1kg of potatoes is $8. What is the cost of 15 kg of potatoes? (hurry pls)
Ostrovityanka [42]
It’s 8•15 which is 120 kg of potatoes
6 0
2 years ago
Read 2 more answers
Which of the following could not happen to an igneous rock?
galben [10]
I could not break unless you hit it with a sledge hammer
4 0
3 years ago
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