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grigory [225]
3 years ago
15

Suppose you want to find out which dog food your dog likes best. Write about the experiment you would design. What variables do

you need to control? How would you avoid experimental bias? Write a scientific hypothesis.
Answer all these questions. Thanks!
Chemistry
1 answer:
denis-greek [22]3 years ago
3 0
By giving the dog 2 or more different dog foods and seeing what one he eats the must of and the variables u control is how much you give the dog and the hypothesis is if I give the dog two or more different kinds of dog food than we will see what one he/she like the most
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Write the cell notation for the voltaic cell that incorporates each of the following redox reactions:(b) Cu²⁺(aq) + SO₂(g) + 2H₂
yawa3891 [41]

The cell notation for the given voltaic cell is

SO₂(g) | SO₄²⁻(aq) || Cu²⁺(aq) | Cu (s)

<h3>What is a voltaic cell?</h3>

A voltaic cell often called a galvanic cell, is a type of electrochemical cell.

It is a combination of two metal rods called electrodes.

A half cell is formed when both electrodes are submerged in a solution containing a particular mix of ions.

The electrolyte is the liquid in which both electrodes are submerged and acts as a salt bridge connecting the half cells.

The cell undergoes a chemical reaction known as a redox reaction.

One of the electrodes serves as an anode and undergoes oxidation, while the other electrode serves as a cathode and undergoes reduction.

To write the cell notation, write the half-reaction of the cells.

At the anode, oxidation occurs

SO_2(g) \longrightarrow SO_4^{2-}(aq) + 4H^+ (aq) + 2e^-

At cathode

Cu^{2+}(aq) + 2e^- \longrightarrow Cu(s)

In the cell notation, the anode is written on the left side, and the cathode is written on the right side. A vertical line differentiates the phases and the double vertical line represents the salt bridge.

The cell notation for the given voltaic cell is

SO₂(g) | SO₄²⁻(aq) || Cu²⁺(aq) | Cu (s)

Learn more about cell notation:

brainly.com/question/17218591

#SPJ4

8 0
1 year ago
What revolution did Toussaint L'Ouverture lead?
Gelneren [198K]
Toussaint L'Ouverture helped lead the Haitian Revolution.

6 0
3 years ago
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What is the relationship between the motion of the water molecules and the heat added to or removed from the system in the simul
Sergio [31]

Answer:

The motion of the water molecules increase as heat is added.

Explanation:

Hello!

In this case, in general terms, one can know that molecules and heat have a relationship by which one affects the other, more specifically, the heat affects how the molecules behave. In such a way, as the heat added to a system increases its internal energy, one can notice that energy speeds up the molecules because they acquire such energy and the motion starts being increased, it means, the molecules start moving or vibrating faster than before of that heat addition. This is due to the increase of the internal energy, which based on the first law of thermodynamics is related with the velocity of the molecules.

Best regards!

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2 years ago
Why can scientist assume elastic collisions as long as the temperature remains constant?
Tema [17]

Answer:

Because in elastic collisions there is no heat emission or absorption.

Explanation:

A collision is considered elastic when the total kinetic energy of the study system is conserved during the collision. Since the total kinetic energy is conserved, heat is not emitted or absorbed during the collision. Since the emission or absorption of heat is what produces changes in temperature, If the system remains at a constant temperature, there were only elastic collisions.

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Hydrogen gas can be made by reacting methane (CH4) with high temperature steam: CH4(g) + H2O(g) ---&gt; CO(g) + 3H2(g)
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