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Zarrin [17]
3 years ago
8

What causes gas pressure in a container such as a helium balloon?

Chemistry
1 answer:
Hatshy [7]3 years ago
8 0

Conversely cold air sinks. ... It is the collisions of the air molecules with the inside walls of the balloon that keep the balloon inflated. In A. The pressure produced by the air molecules inside a balloon will first depend on the number of air molecules, N, in the balloon.


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Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 15.4 u.
mixas84 [53]

Answer:

N, B, Be, C

Explanation:

N (Nitrogen) has 14.0067 B (Boron) has 10.81 Be (Beryllium) has 9 and C (Carbon) has 12

8 0
2 years ago
Another name for light is
Karo-lina-s [1.5K]

Answer:

Another name for light is ¨Electromagnetic Radiation, luminous energy, and/or radiant energy.¨

Explanation:

Light is the electromagnetic radiation that´s capable of causing a visual sensation and has wavelengths from about 380 to about 780 nanometres. Electromagnetic radiation includes Radio Waves, Microwaves <u>(used in microwaves)</u>, Infrared Radiation <u>(heat)</u>, Visible Light <u>(the colors we see)</u>, Ultraviolet <u>(the UV radiation that causes sunburns)</u>, X-Rays <u>(used in medical X-Rays)</u>, and Gamma Rays <u>(which can be used to treat cancer)</u>. Light waves are transverse waves because they only travel east or west, but their crests and troughs face north and south (if desplayed on a coordinate grid). They wouldn´t be longitudinal waves because these waves don´t have vertical crests and troughs.

I hope this helps!

6 0
2 years ago
Astronomy students are planning an investigation to study the Andromeda galaxy. In order to be able to study the galaxy as clear
Jet001 [13]

Answer:

May 17

Explanation:

When it refers to 0% light it describe a new moon, from a new moon to a full Moon are 14 days, then if you start a full moon on May 3 and you add 14 days it means that the next new Moon would be on May 17.

3 0
3 years ago
Minerals in geodes form spectacular euhedral crystals because ________. A. all of the elements incorporated in the crystals are
vovangra [49]

B. the crystals have abundant room to grow in their hollow surroundings

Explanation:

Minerals in geodes form spectacular euhedral crystals because the crystals have abundant room to grow in their hollow surroundings.

Euhedral crystals are crystals that have well formed and defined faces. The opposite term for euhedral is anhedral. Anhedral crystals lacks crystal faces.

When a crystal have abundant room to grow in their hollow surroundings, they grow and develop well without any alteration of their faces.

Crystal faces are destroyed when crystals don't have spaces to grow and they touch each other.

Learn more:

Platinum crystals brainly.com/question/5048216

#learnwithBrainly

6 0
3 years ago
Be sure to answer all parts. Solving the Rydberg equation for energy change gives ΔE = R[infinity]hc [ 1 n12 − 1 n22 ] where the
icang [17]

Answer:

Explanation:

Utilizing Rydber's  equation:

ΔE = Z²Rh ( 1/n₁² - 1/n₂²) and substituting the values given ( using the Rydbers constant value in Joules ), we have

n=1 to n= infinity

ΔE = 3² x (1/1² - 0) x 2.18 x 10⁻^18 J = 2.0 x 10⁻¹⁷ J      (1/infinity is zero)

n= 3 to n= infinity

ΔE = 3² x (1/3² - 0) x 2.18 x 10⁻^18 J = 2.28 x 10^-18 J

b.  The wavelength of the emitted can be obtained again by using Rydberg's equation but this time use the constant value 1.097 x 10⁷ m⁻¹ given in the problem .

1/λ = Z²Rh (1/n₁² - 1/n₂²) 10 ⁻¹ = 3² x 1.097 x 10⁷ m⁻¹ x (1/1² - 1/3²) m⁻¹

1/λ =8.8 x 10⁷ m⁻¹ ⇒  λ =1.1 x 10^-8 m

λ = 1.1 x 10^-8 m x 1 x 10⁹ nm/m = 11 nm

7 0
3 years ago
Read 2 more answers
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