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Damm [24]
3 years ago
8

Consider the following data for five hypothetical elements: Q, W, X, Y, and Z. Rank the elements from most reactive to least rea

ctive. Combination Observation of reaction Q W Reaction occurs X Z No reaction W Z Reaction occurs Q Y Reaction occurs Place the element symbols from most to least reactive.
Combination Observation of reaction
Q + w+ Reaction occurs
x +z+ No reaction
w + z+ Reaction occurs
Q+ + Y Reaction occurs
Chemistry
1 answer:
Natalka [10]3 years ago
8 0

Answer:

Y, Q, W, Z and X

Y > Q > W > Z > X

Explanation:

To know the most reactive element, the element will be able to displace other metal in it compound. We also have to observe if the reaction occur. If the reaction didn't occur, that means the element is not reactive than the metal found in the other reactant. Invariably their will be no displacement.

Q + w+ Reaction occurs

Q element displace the metal w in it compound . This means Q is more reactive.

x +z+ No reaction

No reaction here. This means x is less reactive than z as it couldn't displace z in it compound.

w + z+ Reaction occurs

w is more reactive than z as it displaces z in it compound.

Q+ + Y Reaction occurs

Y is more reactive than Q as it displaces Q in it compounds.

Therefore, the most reactive to the least reactive is arrange as follows.

Y, Q, W, Z and X

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Answer:

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Explanation:

Step 1:

Data obtained from the question. This includes:

Mass of CO2 = 5.6g

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Step 2:

Determination of the number of mole of CO2.

This is illustrated below:

Mass of CO2 = 5.6g

Molar Mass of CO2 = 12 + (2x16) = 12 + 32 = 44g/mol

Number of mole CO2 =?

Number of mole = Mass/Molar Mass

Number of mole of CO2 = 5.6/44

Number of mole of CO2 = 0.127 mole

Step 3:

Determination of the pressure in the container.

The pressure in the container can be obtained by applying the ideal gas equation as follow:

PV = nRT

The gas constant (R) = 0.082atm.L/Kmol

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P x 4 = 0.127 x 0.082 x 300

Divide both side by 4

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