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strojnjashka [21]
3 years ago
11

HELP ME PLEASE!! IAM BEING TIMED. I WILL GIVE YOU BRAINLIEST!

Chemistry
2 answers:
dangina [55]3 years ago
8 0

Answer:

If it is made from solid silver then it is an element. If it is made from a silver alloy then it is a mixture. If it is a silver plated plate (i.e. a plate made from say, copper but with a thin layer of silver on top) then it is an element on top of an element.

Explanation:

I'm assuming you're talking about solid silver, so, i believe an element.

Goshia [24]3 years ago
4 0

Answer:

Element

Explanation:

Other things on that list like alloy and compound can be broken down, but elements cannot

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Bumek [7]

Answer:

Partial pressure for each of the three gases, in the mixture is 15 atm

Explanation:

Remember that the total pressure of a mixture, is the sum of partial pressures from the gases contained in the mixture.

Our total pressure = 45 atm

The 3 gases have the same pressure, so we can propose this equation:

3x = 45 atm

where x is the partial pressure for each of the three gases.

x = 45/3 → 15 atm

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2 years ago
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Which of the following is not a statement of Dalton's atomic theory of matter?a. Elements are made of atomsb. Atoms of a given e
Alona [7]

Answer:

c. The atoms of one element can be identical to the atoms of another element.

Explanation:

<em>Which of the following is not a statement of Dalton's atomic theory of matter?</em>

<em>a. Elements are made of atoms.</em> TRUE. An atom is the smallest particle of a chemical element that can exist.

<em>b. Atoms of a given element are identical.</em> TRUE. The only slight difference is in the mass of isotopes.

<em>c. The atoms of one element can be identical to the atoms of another element.</em> FALSE. The atoms of different elements are different from one to another.

<em>d. A given compound always has the same number and kinds of atoms. </em>TRUE. This is known as Dalton's law of constant composition.

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3 years ago
What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)?
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3.5 mols --------- ?

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V = 78.4 L

hope this helps!


4 0
3 years ago
What has research determined about the orbit of an electron around a nucleus
polet [3.4K]
Hello,

Here is your answer:

The proper answer to this question is that "e<span>ach sub-level electron type has a unique path where it will likely to be found".

If you need anymore help feel free to ask me!

Hope this helps!</span>
4 0
3 years ago
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