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3 years ago

Transition metals have delocalized electrons called an "electron sea." What property does this allow?

Chemistry

1 answer:

RideAnS [48]3 years ago

7 0

Answer:

A conducting electricity

Explanation:

The "electron sea" allows the current to flow across the electrons. If the electrons were stuck in their positions, these metals would be better insulators than conductors because they couldn't spread (or conduct) the energy as electricity.

B, C, and D are all not things directly caused by the delocalized electrons.

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8. Calculate the number of moles of eachsubstance.a. 5.45 x 1026 particles of methane, CH4

Klio2033 [76]

ANSWER

The number of moles of methane is 905.32 moles

STEP-BY-STEP EXPLANATION:

Given information

The number of particles of methane = 5.45 x 10^26 particles

Let x represents the number of moles of methane

To calculate the number of moles, we will be using the below formula

$\text{Number of particles = number of moles x Avogadro's constant}$

Recall that, the Avogadro's constant is given as

$6.02\cdot10^{23}$ $\begin{gathered} 5.45\cdot10^{26}\text{ = x }\cdot\text{ 6.02 }\cdot10^{23} \\ \text{Divide both sides by 6.02 }\cdot10^{23} \\ x\text{ = }\frac{5.45\cdot10^{26}}{6.02\cdot10^{23}} \\ x\text{ = }\frac{5.45}{6.02}\cdot10^{26\text{ - 23}} \\ x\text{ = 0.9053 }\cdot10^3 \\ x\text{ = 905.32 moles} \end{gathered}$

Therefore, the number of moles of methane is 905.32 moles

6 0

2 years ago

What does converse mean

Xelga [282]

Answer:

engage in conversation.

Explanation:

8 0

3 years ago

A closed container is filled with oxygen. the pressure in the container is 275 kpa . what is the pressure in millimeters of merc

miv72 [106K]

1 kpa = 7.5 mm of Hg [Remember it or can be found on internet ]

So, 275 kpa = 7.5 x 275 = 2062.5 mm of Hg

8 0

3 years ago

If a 0.7 M solution of Ca(OH)2 dissociates completely in water, what is the final [OH-]?

IceJOKER [234]

Answer:

1.40 M [OH⁻]

Explanation:

This compound dissociates into 3 ions, but since we are asked about [OH⁻], it's only 2. Therefore, multiply the molarity of the solution by the number of ions that [OH⁻] dissociates into:

2 × 0.70 M = 1.40 M

Hope this helps! Sorry that you got a link. Those are getting really annoying

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3 years ago

A radioactive isotope of potassium (k) has a half-life of 20 minutes. if a 43 gram sample of this isotope is allowed to decay fo

Ksenya-84 [330]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 43 g

m (final mass after time T) = ? (in g)

x (number of periods elapsed) = ?