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3 years ago

Using the electronegativity values in the chart below, which bond is the most polar?

Chemistry

1 answer:

lorasvet [3.4K]3 years ago

7 0

Answer:

C-O

Explanation:

you have to check the all four bonds and find out their electronegativity difference. Whichever has the largest difference, is your answer.

N-O = 3.04 - 3.44 = -0.4
Cl-Cl = 3.16 -3.16 = 0
C-O = 3.44 - 2.55 = 0.89
C-H = 2.55 - 2.20= 0.35

Now check the differences, the largest electronegativity differences means the most polar bond

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A piece of aluminum weighing 10.0 grams is placed into a graduated cylinder that has an initial volume (before immersion) of 35.

padilas [110]

Answer:

The density of the metal sample is 2.70 $\frac{grams}{mL}$

Explanation:

Density is a magnitude that allows you to measure the amount of mass in a given volume of a substance. Then, the expression for the calculation of density is the ratio between the mass of a body and the volume it occupies:

$d=\frac{m}{V}$

Density, according to the International System of Units, is usually expressed in kilograms per cubic meter (kg / m3) or gram per cubic centimeter (g / cm3). Although it can also be expressed in any other unit of mass by volume.

So, for the calculation of density you know that:

mass of the sample= 10 grams
volume of the sample = volume on the cylinder after immersion - volume on the cylinder before immersion= 38.7 mL - 35.0 ml = 3.7 mL

Then:

$d=\frac{10 grams}{3.7 mL}$

d=2.70 $\frac{grams}{mL}$

<u><em>The density of the metal sample is 2.70 </em></u> $\frac{grams}{mL}$ <u><em></em></u>

5 0

3 years ago

Which composer made it a goal to create compositions that sounded truly american?.

MAVERICK [17]

Given what we know, we can confirm that the composer who made it a goal to create compositions that sounded truly American was Aaron Copland.

<h3>Who was Aaron Copland?</h3>

Aaron Copland was an American composer, among his other disciplines, best known for his jazz-styled music. He went on to win an Oscar award for film composing for the movie The Heiress (1949).

Therefore, we can confirm that the composer who made it a goal to create compositions that sounded truly American was Aaron Copland.

To learn more about music visit:

brainly.com/question/8051042?referrer=searchResults

7 0

3 years ago

What is the name of the compound NO₄?

Kryger [21]

Answer:

hello

Explanation:

answer is oxido nitrate please follow me

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3 years ago

How did the eggs change when they were heated up?

melisa1 [442]

Their proteins become denatured

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3 years ago

You have competed an extraction procedure on a mixture of compounds known to contain Lauric acid ( it to get necessary physical

marin [14]

Answer:

3.5 mL

Explanation:

Let us represent lauric acid with the symbol LaCOOH and the anion as LaCOO-. The reaction between the anion and H2SO4 is;

LaCOO-(aq) + H2SO4(aq) -----> LaCOOH(aq) + HSO4-(aq)

Number of moles of LaCOO- = 2.75 g/200 g/mol = 0.014 moles

Since the mole ratio of the reaction is 1:1, then the amount of H2SO4 required is also 0.014 moles

Then;

n = CV

n = number of moles

C= concentration

V = volume

V = n/C

V = 0.014 moles/4.0 M

V= 3.5 * 10^-3 L

V = 3.5 mL

5 0

3 years ago