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3 years ago

7

When the absolute value of the difference in electronegativity of two adjacent atom in a compound is 1, they are most likely bon

ded by ________.

1 answer:

Morgarella [4.7K]3 years ago

8 0

Answer:polar covalent bond

Explanation:

Compounds are formed ether by donating, receiving or sharing of electrons making the bonds between them to be ionic, or covalent .

Now according to the rule of type of bond assignment due to electronegativity difference of atoms

---When the electronegativity difference is less than 0.5, the bond formed is nonpolar covalent.

---When the electronegativity difference is between 0.5 and 1.6, the bond is considered polar covalent

---When the electronegativity difference greater than 2.0, then the bond is ionic.

Therefore, When the absolute value of the difference in electronegativity of two adjacent atom in a compound is 1, they are most likely bonded by polar covalent bond eg HCl bond , CCL4 bond

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A. 207 kJ<br> B. 4730 kJ<br> C. 9460 kJ<br> D. 414 kJ

Leno4ka [110]

Answer:

$\boxed {\boxed {\sf C. \ 9460 \ kJ}}$

Explanation:

The formula we must use is given to us:

$q=mL_{vapor}$

q is the energy, m is the mass, and L(vapor) is the latent heat of vaporization.

The energy is what we calculate and the mass is 2 kilograms. We need to find the latent heat of vaporization, which is on the table.

We know the sample is copper.
Find that element on the table, then the third box tells us it's latent heat of vaporization is 4730 kJ/kg

Now we know:

$m= 2 \ kg \\L_{vapor}=4730 \ kJ/kg$

Substitute the values into the formula.

$q=(2 \ kg ) * (4730 \ kJ/kg)$

Multiply. Note that the kilograms (kg) will cancel each other out.

$q= 2* 4730 \ kJ$

$q= 9460 \ kJ$

<u>9460 kilojoules</u> are required to vaporize 2 kilograms of copper.

3 0

3 years ago

Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than i

ziro4ka [17]

Answer:

d) Ni < Co < Fe < Zn < Al

Explanation:

electronegativity of Aluminium 1.6

electronegativity of Zinc 1.7

electronegativity of iron 1. 83

electronegativity of Cobalt 1.88

electronegativity of Nickel 1.91

As the electronegativity of aluminium is lower as compared to other, so it will have high tendency to easily lose electron and that is why Aluminium is more reactive than the other mentioned

8 0

3 years ago

Name three properties of solids that are different from those of liquids. Explain the differences for each.

olga55 [171]

1) Solids have a fixed shape
The particles of solids are held into their positions and are only able to vibrate about fixed points. The strength of the bonding means that the particles have their own shape, which they retain, and do not take the form of the container they are in.

2) Solids may not flow
The molecules of liquids are able to slide past one another due to weaker bonds between particles. This allows the liquid to flow; whereas, this movement is not possible in solids so they cannot flow.

3) Solids may fracture
The fact that solids possess a rigid structure means that they have the ability to fracture. Although some are able to withstand more stress than others, all solids may break. This breakage occurs when the intermolecular bonds are mechanically broken. This is not possible in the case of liquids because such rigid intermolecular bonds do not exist.

4 0

3 years ago

Explain why this reaction can be classified as a synthesis reaction

rusak2 [61]

The reason why the reaction written on the picture can be classified as a synthesis reaction is :
the reaction shows one compound that formed from two compounds

hope this helps

5 0

3 years ago

What mass in grams of MgSO4 is required to make 59.3 mL of 2.68 M<br> solution?

love history [14]

Answer:

Approximately $19.1\; \rm g$ .

Explanation:

<h3>Number of moles of formula units of magnesium sulfate required to make the solution</h3>

The unit of concentration in this question is " $\rm M$ ". That's equivalent to " $\rm mol \cdot L^{-1}$ " (moles per liter.) In other words:

$c(\mathrm{MgSO_4}) = 2.68\; \rm M = 2.68\; \rm mol \cdot L^{-1}$ .

However, the unit of the volume of this solution is in milliliters. Convert that unit to liters:

$\displaystyle V = 59.3\; \rm mL = 59.3 \; \rm mL \times \frac{1\; \rm L}{1000\; \rm mL} = 0.0593\; \rm L$ .

Calculate the number of moles of $\rm MgSO_4$ formula units required to make this solution:

$\begin{aligned}n(\rm MgSO_4) &= c \cdot V \\ &= 2.68 \; \rm mol \cdot L^{-1} \times 0.0593\; \rm L \approx 0.159\; \rm mol \end{aligned}$ .

<h3>Mass of magnesium sulfate in the solution</h3>

Look up the relative atomic mass data of $\rm Mg$ , $\rm S$ , and $\rm O$ on a modern periodic table:

$\rm Mg$ : $24.305$ .
$\rm S$ : $\rm 32.06$ .
$\rm O$ : $15.999$ .

Calculate the formula mass of $\rm MgSO_4$ using these values:

$M(\mathrm{MgSO_4}) = 24.305 + 32.06 + 4 \times 15.999 \approx 120.361\; \rm g \cdot mol^{-1}$ .

Using this formula mass, calculate the mass of that (approximately) $0.159\; \rm mol$ of $\rm MgSO_4$ formula units:

$\begin{aligned}m(\mathrm{MgSO_4}) &= n \cdot M \\&\approx 0.159 \; \rm mol \times 120.361 \; \rm g \cdot mol^{-1} \approx 19.1\; \rm g\end{aligned}$ .

Therefore, the mass of $\rm MgSO_4$ required to make this solution would be approximately $19.1\; \rm g$ .

3 0

3 years ago