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EastWind [94]
4 years ago
15

Low energy waves have (3 points)

Chemistry
1 answer:
Sergeeva-Olga [200]4 years ago
7 0

Answer:

Low energy waves have <u>a long wavelength.</u>

Explanation:

Energy of wave is directly related to  the frequency while it is inversely proportional to the wavelength.

If any wave have high energy it will have high frequency and smaller wavelength.

If the wave have lower energy then it will have lower frequency and higher wavelength.

Mathematical relationship:

E = h. f

E = h. c/λ

E= energy

h = planck's constant

f = frequency

c = speed of light

λ = wavelength

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How can you turn off a magnetic field produced by an electrical current?
Kaylis [27]

Answer:

d) By turning the electrical current off

Explanation:

This is the only one that fits this situation because all of the other answers help improve the magnetic field.

5 0
3 years ago
Having the same number of valence electrons means having similar chemical properties.
Luba_88 [7]

Answer:

True

Explanation:

Because atoms with the same number of valence electrons react in similar ways with other elements.

6 0
3 years ago
A compressed gas cylinder ar 135 atm and 23°C is in a room wheree a fire occurs the fire raises the temperature of the gas to 47
yan [13]

Answer: 341.15atm

Explanation:Please see attachment for explanation

7 0
3 years ago
How much does 0.0273 moles of Na2O weigh
devlian [24]

Answer:

1.69 g Na₂O

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

0.0273 mol Na₂O

<u>Step 2: Identify Conversions</u>

Molar Mass of Na - 22.99 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Na₂O - 2(22.99) + 16.00 = 61.98 g/mol

<u>Step 3: Convert</u>

<u />0.0273 \ mol \ Na_2O(\frac{61.98 \ g \ Na_2O}{1 \ mol \ Na_2O} ) = 1.69205 g Na₂O

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

1.69205 g Na₂O ≈ 1.69 g Na₂O

6 0
3 years ago
Write the electron configuration for sodium.
Dafna11 [192]

Answer:

1s^2..2s^2..2p^6..3s^1

Explanation:

Since sodium has 11 electrons...its electron configuration is...;

1s^2..2s^2..2p^6..3s^1

;The powers of the energy levels(i.e s,p,d) should all add up to the number of electrons in an atom

*.When writing...please do not separate them.

4 0
3 years ago
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