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RideAnS [48]
3 years ago
10

Circle only those of the following reactions that are redox reactions:

Chemistry
1 answer:
Citrus2011 [14]3 years ago
5 0

Answer: options B,D and F

Explanation:

Since redox reactions are those which involves both oxidation and reduction

In B , Cu is oxidized and S gets reduced

D, Na gets oxidized and hydrogen gets reduced

F, carbon gets oxidized and Oxygen gets reduced

In g, there is no change in oxidation no of s in both product and Reactants is same +4

Similarly in the case of Ag and Mg.

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3 years ago
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An electrical current only moves through a ____ circuit.
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Answer:

Closed

Explanation:

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3 years ago
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Compared with surface currents, deep currents are a. colder and less dense. c. warmer and denser. b. warmer and less dense. d. c
Katyanochek1 [597]

The correct answer is option d, that is, colder and denser.  

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5 0
3 years ago
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What is the mass of an object with an acceleration of 10 meters per second and a force of 90 newtons?
fenix001 [56]

Answer:

9kg

Explanation:

According to Newton's second law, Force=Mass x Acceleration.

Since we have the Force and the Acceleration, we can plug the values in and solve for mass using this equation:

90N = Mass x 10m/s

Divide both sides by 10:

90/10=Mass x 10/10

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Hope this helped!

7 0
4 years ago
How many grams nh3 are equivalent to 9.3 x 1023 molecules nh3?
ICE Princess25 [194]

To solve this, we need the Avogadros number to convert to moles then multiply with molar mass to convert to mass in grams.

 

moles = 9.3 x 10^23 molecules * (1 mol / 6.022 x 10^23 molecules)

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Molar mass of NH3 is 17 g/mol:

mass = 1.54 moles * 17 g/mol

<span>mass = 26.25 g</span>

4 0
4 years ago
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