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matrenka [14]
3 years ago
7

Describe the difference between an atomic element and a molecular element. Check all that apply. Check all that apply. Molecular

elements exist with a single atom as their basic unit. Atomic elements exist with a single atom as their basic unit. H2, F2, and P4 are some examples of atomic elements. H, F, and P are some examples of molecular elements. Atomic elements have more than one atom in their basic unit. H, F, and P are some examples of atomic elements. H2, F2, and P4 are some examples of molecular elements. Molecular elements have more than one atom in their basic unit.
Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
6 0

Answer:

Atomic elements exist with a single atom as their basic unit.

H, F, and P are some examples of atomic elements.

H2, F2, and P4 are some examples of molecular elements.

Molecular elements have more than one atom in their basic unit.

Explanation:

Atomic element exists as the smallest particle of an element that can take part in a chemical reaction. They exist with a single atom as their basic unit. The atomic number of an element is the number of protons present in the atomic nucleus of the element. Atomic elements are usually monoatomic such as H, F and P.

Molecular elements are the smallest particle that are capable of independent existence and still retains the chemical properties of those substances. They are capable of independent existence because they are diatomic. The combination of atoms of the same type produces a molecule of an element such as H₂, F₂, and P₂.

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What is the molarity of a solution containing 17.0 g of KCl in 213 mL of KCl solution?
Anarel [89]

Answer:

1.070MKCl

Explanation:

So we know that the original formula is M= n/L (n being moles of solute, L being liters of solvent)

Since we do not have liters in this problem, we would need to convert  milliliters to liters

<u>213 mL= 0.213 L</u>

We then see that we do not have moles, but we do have a mass, being <u>17.0 g.</u> we would need to convert these grams to moles, giving us <u>0.228 mol.</u>

Then, you would plug in <u>0.228 for your n</u>, and now you are ready to solve your original formula, plugging everything in.

M=n/L

M=0.228 mol/0.213L

M= 1.070MKCl

I know this was long, but I hope this helps (:

5 0
3 years ago
How do whales, bats, and dolphins use echolocation?
Nataly [62]
I feel like all of them are true


8 0
3 years ago
Read 2 more answers
If a gas occupies 4600 mL at 0.9 atm and 195°C, what is the new volume in ml
Bumek [7]

Answer:

The new volume is 2415 mL

Explanation:

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases.

Boyle's law says that the volume occupied by a given gas mass at constant temperature is inversely proportional to the pressure and is expressed mathematically as:

P * V = k

Charles's law is a law that says that when the amount of gas and pressure are kept constant, the ratio between volume and temperature will always have the same value:

\frac{V}{T} =k

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the gas pressure increases. And when the temperature is decreased, the gas pressure decreases. This can be expressed mathematically in the following way:

\frac{P}{T} =k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\frac{P*V}{T} =k

Having two different states, an initial state and an final state, it is true:

\frac{P1*V1}{T1} =\frac{P2*V2}{T2}

In this case:

  • P1= 0.9 atm
  • V1=4,600 mL= 4.6 L (being 1 L=1,000 mL)
  • T1= 195 °C= 468 °K (being 0°C=273°K)

The final state 2 is in STP conditions:

  • P2= 1 atm
  • V2= ?
  • T2= 0°C= 273 °K

Replacing:

\frac{0.9 atm*4.6L}{468K} =\frac{1 atm*V2}{273K}

Solving:

V2=\frac{0.9 atm*4.6L}{468K}*\frac{273K}{1 atm}

V2= 2.415 L =2,415 mL

<u><em>The new volume is 2415 mL</em></u>

6 0
3 years ago
Which of the following statements about the nucleus is false? A. Able to be lost or gained in chemical reactions. B. Made up of
vlabodo [156]

Answer:

A. Able to be lost or gained in chemical reactions.

Explanation:

Only electrons are lost or gained.

7 0
3 years ago
According to the electron sea theory, what happens when a collection of metal atoms are in close proximity to each other?
lys-0071 [83]
The correct answer is A. All electrons become free and separate from the nuclei. In metallic bonds, the electrons of the metal atoms are delocalized. The electron in the electron sea can freely roam around or are free to flow.
8 0
3 years ago
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