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topjm [15]
3 years ago
8

Select the correct answer.

Chemistry
1 answer:
denis-greek [22]3 years ago
5 0

The correct answer describes Newton's second law of motion : A. Force = mass x acceleration (F=m.a)

<h3>Further explanation  </h3>

Newton's 2nd law states that :

<em>the acceleration from the applied force is proportional to the resultant force and inversely proportional to the mass </em>

Can be formulated

\tt a=\dfrac{F}{m}

or

\tt F=m\times a

F = force, N

m = mass, kg

a = acceleration, m/s²  

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Calculate the standard potential for the following galvanic cell: Fe(s) | Fe2+(aq) || Ag+(aq) | Ag(s) which has the overall bala
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Answer:

E° = 1.24 V

Explanation:

Let's consider the following galvanic cell: Fe(s) | Fe²⁺(aq) || Ag⁺(aq) | Ag(s)

According to this notation, Fe is in the anode (where oxidation occurs) and Ag is in the cathode (where reduction occurs). The corresponding half-reactions are:

Anode: Fe(s) ⇒ Fe²⁺(aq) + 2 e⁻

Cathode: Ag⁺(aq) + 1 e⁻ ⇒ Ag(s)

The standard cell potential (E°) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

E° = E°red, cat - E°red, an

E° = 0.80 V - (-0.44 V) = 1.24 V

6 0
3 years ago
Predict how the addition of a catalyst would affect the rate of the reaction below, and explain your prediction H2 (g) + I2 (g)
Fynjy0 [20]
A catalyst is a chemical substance that hastens the chemical reaction. This does not participates in the creating the product(s) but allows it to be formed easily. With this, it is now known that the rate of the reaction becomes relatively higher compared to the uncatalyzed reactions.

Therefore, the answer to this item is the rate of the reaction becomes faster. 
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3 years ago
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In a second-order reaction (one that is second order in one reactant), cutting in half the concentration of that reactant will h
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A second order reaction varies with the square of the concentration of the reactant. Therefore, halving the concentration will reduce the rate of reaction by a factor of 4.
The answer is E.
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A compound has the empirical formula ch and a formula mass of 52.10 amu. part a what is the molecular formula of the compound?
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The mass of sodium sulfite that was used will be 1,890 grams.

<h3>Stoichiometric problems</h3>

First, the equation of the reaction:

NaSO_3 + 2HCl --- > NaCl_2 + H_2O + SO_2

The mole ratio of SO2 produced and sodium sulfite that reacted is 1:1.

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More on stoichiometric problems can be found here: brainly.com/question/14465605

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