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sweet-ann [11.9K]
2 years ago
11

Which of the following shows the wavelengths of light that an atom gives off when an electron falls to a lower energy level?

Chemistry
1 answer:
charle [14.2K]2 years ago
3 0

The wavelengths of light that an atom gives off when an electron falls to a lower energy level corresponds to Emission spectrum , Option D is the correct answer.

<h3>What is Emission Spectrum ?</h3>

Light is absorbed or emitted when an electron jumps or falls into an energy level.

The energy of light absorbed or emitted is equal to the difference between the energy of the orbits.

Therefore , the wavelengths of light that an atom gives off when an electron falls to a lower energy level corresponds to Emission spectrum.

To know more about Emission Spectrum

brainly.com/question/13537021

#SPJ1

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A balloon with a volume of 2.0 L at 25°C is placed in a hot room at 35°C. The pressure on the balloon is constant at 1.0 atm. Ho
7nadin3 [17]

Answer:

The volume increases,

Final volume is 2.1L

Explanation:

Based on Boyle's law, the absolute temperature of a gas is directly proportional to the volume of the gas.

As the balloon change increases its temperature, the volume increases

The Boyle's equation is:

V1T2 = V2T1

<em>Where V is volume and T is absolute temperature of 1, initial state and 2, final state of the gas.</em>

<em />

Replacing:

V1 = 2.0L

T2 = 35°C + 273.15 = 308.15K

V2 = ?

T1 = 25°C + 273.15 = 298.15K

2.0L*308.15K = V2*298.15K

2.1L = V2

<h3>Final volume is 2.1L</h3>

<em />

4 0
3 years ago
How many liters of hydrogen gas is produced from 3.712 g of magnesium with 104.2ml of 1.385 mol/L HCL (aq) at SATP? Please show
Licemer1 [7]

Answer:

V=1.61L

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

Mg+2HCl\rightarrow MgCl_2+H_2

Next, we compute the reacting moles of each reactants:

n_{Mg}=3.712gMg*\frac{1molMg}{24.305 gMg}=0.153molMg

n_{HCl}=1.385\frac{molHCl}{L}*0.1042L=0.144molHCl

Then, as magnesium and hydrohloric acid are in a 1:2 molar ratio 0.153 moles of magnesium will completely react with 0.306 moles of hydrochloric acid yet we only have 0.144 moles, therefore, limiting reactant is hydrochloric acid. Thus, we compute the produced moles of hydrogen:

n_{H_2}=0.144molHCl*\frac{1molH_2}{2molHCl} =0.072molH_2

Finally, we use the ideal gas equation with T=298K and 1atm (STP conditions) to compute the liters of hydrogen gas:

PV=nRT\\\\V=\frac{nRT}{P}=\frac{0.072mol*0.082\frac{atm*L}{mol*K}*273K}{1atm}\\  \\V=1.61L

Best regards.

3 0
3 years ago
Mr. Stein builds a model of a molecule out of wooden beads and pegs. He uses the model to explain the shape of the molecule. Mr.
ZanzabumX [31]

Answer:

A

Explanation: The real molecule is too small so had to build a model to make it viewable

5 0
3 years ago
Read 2 more answers
How can one describe the bond between the two atoms of hydrogen to the one atom of oxygen within a molecule of water (h2o)?
Digiron [165]

There are O-H bonds in H2O. They have the intramolecular force of polar covalent bond.

4 0
4 years ago
Can you help me please ​
myrzilka [38]

Answer:

A. Non-metal

B. Six

C. 2

D.NA2O

E.Oxygen

Explanation:

Oxygen is the element in the second period (second horizontal row) and Group VI A of the periodic table. These properties apply to oxygen

7 0
2 years ago
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