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Mariulka [41]
2 years ago
14

when you drop a block of metal into water, you find that the metal sinks. what happens if you drop a smaller block of the same m

etal into water?
Chemistry
2 answers:
const2013 [10]2 years ago
7 0

it'll probably sink....

oksano4ka [1.4K]2 years ago
7 0

sink most likely ok?

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What else is produced when sodium carbonate decomposes?
alexdok [17]

Sodium oxide and carbon dioxide

Explanation:

When sodium carbonate decomposes sodium oxide and carbon dioxide is produced:

                          Na₂CO₃ → Na₂O + CO₂

  • This kind of reaction is known as decomposition reaction.
  • In a decomposition reaction,
  • In this kind of reaction, two or more products form from a single reactant.
  • The breakdown of a compound into its component individual elements or other compounds falls into this reaction category.

Learn more:

Thermal decomposition brainly.com/question/11181911

#learnwithBrainly

8 0
2 years ago
In an aqueous chloride solution cobalt(ii) exists in equilibrium with the complex ion cocl42-. co2 (aq) is pink and cocl42-(aq)
liraira [26]

First you should know that the Principle of Le Chatelier states that <u>if a system in equilibrium is subjected to a change of conditions, it will move to a new position in order to counteract the effect that disturbed it and recover the state of equilibrium.</u>

The variation of one or several of the following factors can alter the equilibrium condition in a chemical reaction:

  • Temperature
  • The pressure
  • The volume
  • The concentration of reactants or products

1. This reaction is: <u>a. exothermic</u>

The chemical equilibrium at issue is:

CoCl₄²⁻  ⇄   Co²⁺ + 4Cl⁻ + heat

<em>blue</em>            <em>pink</em>

The reaction of the question is <u>exothermic</u> because when adding heat (at high temperature) the equilibrium moves to the left since the blue color is strong which means that there are more reagent (CoCl₄²⁻) that product (Co²⁺). On the other hand, when extracting heat from the system (at low temperature) the equilibrium moves to the right since the pink color predominates and more product is present in the solution.

2. When the temperature is decreased the equilibrium constant, k: <u>c. remains the same.</u>

As mentioned above, <u>a system in equilibrium that is disturbed will move to a new position in order to counteract the effect that disturbed it and recover the state of equilibrium. </u>In this way, the system will always remain in equilibrium and its equilibrium constant will remain constant. This is why, despite altering the temperature of the system, the equilibrium constant remains constant.

3. When the temperature is decreased the equilibrium concentration of Co²⁺:  <u>a. increases</u>

Again, the chemical equilibrium at issue is:

CoCl₄²⁻  ⇄   Co²⁺ + 4Cl⁻ + heat

As the reaction in question is exothermic when the temperature decreases, heat is extracted from the system. <u>To compensate this decrease in heat, the system will react by shifting the balance to the right, increasing the concentration of the products and, therefore, the concentration of Co²⁺.</u>

5 0
3 years ago
Explain how Archimedes' principle determines the buoyant force on an object<br> in any fluid medium.
gladu [14]

Answer:

<em>An object in a fluid medium displaces a set amount of fluid upon immersion. Archimedes' principle states that the weight of the displaced fluid is equal to the buoyant force exerted on the object</em>

6 0
3 years ago
Why are standards needed for measured quantities?
Alex
In chemistry the need for standards when measuring quantities are in place for accurate measurement that is recognized world wide. This way, no matter what language people use, they will always understand there standards. 
4 0
3 years ago
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What chemical compound is crucial to marine life and how is it disappearing?
daser333 [38]
Nitrogen is crucial to the marine life and it is disappearing because it cannot be assimilated by most organisms in the water.
5 0
3 years ago
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