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3 years ago

Can I have help with this. I'm really stuck. thanks. the question is above.

Chemistry

1 answer:

evablogger [386]3 years ago

3 0

Answer:

The density of gallium would be greater than aluminium and boron.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

As we move down the group densities increases because larger increase in mass occur with increase ion volume and greater sizes of elements down the group.

The boron, aluminium and gallium present in group thirteen. Boron is present in period two aluminium is present in period three and gallium is present in period four. So, atomic number of gallium is greater than boron and aluminium and it is appear as we move down the group. that's why gallium has larger size and greater value of density then boron and aluminium.

The value of density of gallium is 5.904 g/cm³.

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Gnoma [55]

Answer:

A) CH3CH2CH2CH2CH2CH2OH

Explanation:

For this question, we have the following answer options:

A) CH3CH2CH2CH2CH2CH2OH

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C) (CH3CH2)2CHOHCH3

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The $PBr_3$ attacks the "OH" generation new a bond to P (O-P bonds are very strong), due to this new bond we will have a better leaving group that can remove the oxygen an allow the attack of the Br atom to generating a new C-Br bond. This is made by an Sn2 reaction. Therefore we will have a faster reaction with primary substrates. In this case, the only primary substrate is molecule A. So, "CH3CH2CH2CH2CH2CH2OH" will react faster.

See figure 1

I hope it helps!

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3 years ago

What is the significant figure of 5,000,000,000,000

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4 years ago

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What happens when a catalyst is used in a chemical reaction

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The reaction rate increases.

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3 years ago

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Alexeev081 [22]

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4 years ago

Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3 Mg + N2 → Mg3N2 In a particular experimen

Dafna11 [192]

Answer:

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Explanation:

Magnesium and nitrogen react as : three moles of magnesium reacts with one mole of nitrogen to give one mole of magnesium nitride.

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3 years ago

Can I have help with this. I'm really stuck. thanks. the question is above.​

Can I have help with this. I'm really stuck. thanks. the question is above.