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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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Martije has made a slight error in naming a compound monocarbon tetrabromide. What compound is she most likely naming, and what
Burka [1]
The slight error has been to use the prefix mono to name monocarbon.

The compound she is most likely naming is:

 CBr_4.

As you see, the chemical formula has 1 atom of C, which is likely why she named it mono, and 4 atoms of Br.

The right name is carbon monobromide, i.e. you have to supress the prefix mono, as per IUPAC rules.


4 0
3 years ago
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Which could be the catalyst in a chemical reaction? A. reactants B. product C. enzyme D. activated complex
Mariulka [41]
C. Enzyme because they catalyze biochemical reactions
6 0
2 years ago
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Why is reactivity not a physical property
lbvjy [14]
Reactivity is not a physical property because it's a characteristic of a chemical element or compound and is involved in chemical process.
3 0
3 years ago
A solution is a homogenous mixture of solute and solvent. There are different types of solutions. A carbonated drink is an examp
goblinko [34]

Answer:

  • A.) Gases are readily soluble in water at higher temperatures: FALSE
  • B.) Carbon dioxide gas will be less soluble in water when the partial pressure is low: TRUE
  • C.) Zinc sulfate is soluble in water: TRUE
  • D.) Propanol and heptane are miscible: FALSE
  • E.) Table salt dissolves in water to form a solution: TRUE

Explanation:

The answer choices are:

  • A.) Gases are readily soluble in water at higher temperatures.
  • B.) Carbon dioxide gas will be less soluble in water when the partial pressure is low.
  • C.) Zinc sulfate is soluble in water.
  • D.) Propanol and heptane are miscible.
  • E.) Table salt dissolves in water to form a solution.

<h2>Solution</h2>

Let's see every statement

<u><em>A.) Gases are readily soluble in water at higher temperatures.</em></u>

This is false. At higher temperature, the gas molecules will have higher kinetic energy, meaning that they will move faster and escape more easily from the liquid phase. Thus, gases are less soluble at higher temperatures.

<u><em>B.) Carbon dioxide gas will be less soluble in water when the partial pressure is low.</em></u>

This is TRUE.

HIgher pressures "push" the gas molecules into the liquid phase. When more molecules get dissolved the pressure is partially relieved.

This relation is stated by Henry's Law: the solubility of gases in liquids is directly proportional to the pressure of the gases above the surface of the solution. Thus, carbon dioxide will me less soluble in water when the pressure is low.

<u><em>C.) Zinc sulfate is soluble in water.</em></u>

This is TRUE.

You must resort to the rules of solubility or search the properties of this salt.

Th solubility rules state that most sulfates are soluble in water. Exceptions are sulfates of Ag⁺,Ca²⁺, Sr²⁺, Ba²⁺, Hg²⁺, and Pb²⁺. Thus, you can expect that zinc sulfate is soluble in water.

<u><em>D.) Propanol and heptane are miscible.</em></u>

This is false.

Propanol is a polar compound. It is miscible with water because water is polar too. Heptane is not polar. Thus, following the rule that "like dissolves like" propanol and heptane are not miscible.

<u><em></em></u>

<u><em>E.) Table salt dissolves in water to form a solution.</em></u>

This is TRUE.

This is a classical example of an ionic compound (sodium chloride) that is soluble in water (a polar solvent), showing the rule that polar solvents dissolve polar and ionic compounds.

It is also an everyday fact: rice, for instance, absorbs salt from water because the salt is dissolved in the water.

3 0
3 years ago
If you observe a Full Moon on January 12th, on what date would you observe the next New Moon?
AlexFokin [52]

January 19

Explanation:

every first 7 days of a month the moon roughly starts its full moon phase

8 0
3 years ago
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