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IceJOKER [234]
3 years ago
8

Which of the following statements is true about Planck's Law?

Chemistry
2 answers:
kogti [31]3 years ago
6 0
Whats an electronic do we even know?
iren [92.7K]3 years ago
5 0
B) The frequency of the emitted light is directly proportional to the energy given off by the electrons. 

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List five examples of matter and five examples that are not matter. Explain your answer.
ASHA 777 [7]

Answer:

An apple,a person.a table,a computer,wood because they occupies space

non matter=Light, heat, kinetic and potential energy, and sound are non-matter because they are massless

3 0
2 years ago
Which of the following is a physical model of the Sun? A. an equation that describes the Sun’s motion B. a chart that lists the
Bezzdna [24]

Answer:

It would be E. A small yellow ball that represents the Sun Reset Next i got the answer from somebody else

Explanation:

hope this helps :)

4 0
2 years ago
Oxygen is in group 16 of the periodic table. An oxygen ion (O2-) has a charge of -2. Which of the following would be most likely
Zepler [3.9K]

Answer:

Any Alkali Earth Metal - Group 2A aka Group 16 or polyatomic cation with a 2+ charge

7 0
3 years ago
A 7.06% aqueous solution of sodium bicarbonate has a density of 1.19g/mL at 25°C what is the molarity and molality of the soluti
lilavasa [31]

<em>c</em> = 1.14 mol/L; <em>b</em> = 1.03 mol/kg

<em>Molar concentration </em>

Assume you have 1 L solution.

Mass of solution = 1000 mL solution × (1.19 g solution/1 mL solution)

= 1190 g solution

Mass of NaHCO3 = 1190 g solution × (7.06 g NaHCO3/100 g solution)

= 84.01 g NaHCO3

Moles NaHCO3 = 84.01 g NaHCO3 × (1 mol NaHCO3/74.01 g NaHCO3)

= 1.14 mol NaHCO3

<em>c</em> = 1.14 mol/1 L = 1.14 mol/L

<em>Molal concentration</em>

Mass of water = 1190 g – 84.01 g = 1106 g = 1.106 kg

<em>b</em> = 1.14 mol/1.106 kg = 1.03 mol/kg

5 0
3 years ago
Read 2 more answers
Complete the balanced dissociation equation for the compound below. If the compound does not dissociate, write NR after the reac
nikdorinn [45]

Answer:

K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)

Explanation:

Potassium dichromate (K₂Cr₂O₇) is a strong electrolyte, that is, when dissolved in water (the medium), it dissociates in cation potassium (K⁺) and anion dichromate (Cr₂O₇²⁻). The balanced dissociation equation is:

K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)

6 0
3 years ago
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