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Marysya12 [62]
3 years ago
8

A coordination complex is made up of _________________________________________. (Choose one) Selected Answer: IncorrectC. a tran

sition metal center and alkaline earth metal ligands surrounding it. Answers: CorrectA. a Lewis acidic metal center with Lewis basic ligands surrounding it. B. an Arrhenius basic metal center with Lewis acidic ligands surrounding it. C. a transition metal center and alkaline earth metal ligands surrounding it. D. a Lewis basic metal center with Lewis acidic ligands surrounding it.
Chemistry
1 answer:
ycow [4]3 years ago
3 0

Answer:

a Lewis acidic metal center with Lewis basic ligands surrounding it.

Explanation:

A lewis acid is a chemical specie capable of accepting a lone pair of electrons while a lewis base is a chemical specie capable of donating a lone pair of electrons.

In a coordination compound, a lewis acid(central metal atom/ion) accepts electron pairs from lewis bases (ligands). Any chemical specie called a ligand must possess at least one electron pair available for coordinate covalent bonding.

Coordination compounds are usually formed between transition metal atoms/ions and neutral molecules having lone pairs of electrons or anionc species .

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If 0.8 g of gas Z occupies 0.56 dm at s.1.p., calculate its relative molecular mass. (Molar volume of gas is 22.4 dm.)​
photoshop1234 [79]

Answer:

32

Explanation:

0.56dm of gas has 0.8g

22.4dm of gas Z has a mass of 22.4/0.56X0.8

the relative molecular mass of gas Z is 32

8 0
3 years ago
A chemist takes 50-gram sample of sulfur powder that has a melting point of 115.2 °C. What is the melting point of a 100-gram sa
Viktor [21]

Answer:

115.2 °C since melting point is an intensive property  

Step-by-step explanation:

The melting point of a substance does not depend on how much you have.

For example, the melting point of water is 0 °C, whether it is an ice cube from the refrigerator or in the frozen pond outside.

The freezing point of a substance is an <em>intensive property</em>.

Thus, the melting point of 100 g of sulfur is 115.2 °C because melting point in an intensive property.

7 0
3 years ago
Locate the element zinc (Zn) on the periodic table. How many protons does an atom of zinc contain? How many electrons does an at
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<h2>Answer:</h2><h3>Part 1:</h3>

Location the element zinc (Zn) on the periodic table:

  •    Group number : 12
  •     Period number : 4
  •     Block :  d block
  •      Element : Transition elements.
<h3>Part 2:</h3>

Protons in an atom of Zn:  30

<h3>Part 3:</h3>

Electrons in a Zn atom: 30

<h3>Part 4 :</h3>

Neutron in an atom of Zn: 35


<h3 />
4 0
3 years ago
Read 2 more answers
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824 g NH3 (1 mol/17 g NH3) (4 mol NO/4mol NH3)

48.47 moles NO
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3 years ago
A stack of 15 pennies is immersed into a 100 mL graduate initially containing 20.6 mL of water. The volume in the graduate cylin
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Answer: 5.4

Explanation: The Law of Impenetrability says that two objects can't occupy the same space at the same time; therefore, the pennies and the water can't occupy the same space at the same time. Without the pennies the water level read 20.6 mL, dropping in the pennies gives a level of 26.0.

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2 years ago
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