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skelet666 [1.2K]
3 years ago
14

Fill in the blanks with the correct words to complete the sentence.

Chemistry
1 answer:
navik [9.2K]3 years ago
4 0

Answer:

Explanation:

Salt water intrusion can cause the <u><em>fresh</em></u> water in wells to become contaminated with<u><em> salt</em></u>water.

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Two cars that are identical except for their color are traveling on the same road.
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B. The blue car has more kinetic energy than the red car
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Which group or groups of atoms are the only atoms with f orbitals A. All atoms heavier than barium B. All atoms heavier than kry
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Answer:

All atoms heavier than barium

Explanation:

In the periodic table, elements are divided into blocks. We have the;

s- block elements

p- block elements

d- block elements

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However, immediately after Barium, we now encounter elements that have f-orbitals. Barium possesses a fully filled d-orbital. Hence after it, we see elements with 4f and 5f orbitals called the Lanthanides and actinides. The elements following the lanthanide and actinide series possess completely filled f-orbitals as inner orbitals.

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Is steel wool and vinegar an exothermic reaction? Explain.
Ivanshal [37]

Answer:

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<span>A Homogeneous Catalyst exists in the same physical state as that of the reaction it catalyzes.

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Catalysts are classifies as follow,
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Example:

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In this reaction catalyst and reactants all are in same phase i.e. Liquids.

Heterogeneous Catalyst are those which are in different phase as that of reactants are.

Example:

                                 Ethene + H₂ + Ni  →  Ethane + Ni

In this reaction ethene and hydrogen are gases while Nickle catalyst is in solid state. 
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