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3 years ago

Using the given table of electronegativity values, determine whether each bond is nonpolar covalent, polar covalent, or ionic.

1 answer:

7 0

Electronegativity (χ) is a property that describes the tendency of an atom to attract a shared pair of electrons. Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.

When the electronegativity difference is greater, the bond polarity is increasing.

Δχ(C-H) = 2.5 - 2.1 = 0.4; nonpolar covalent.

Δχ(K-Cl) = 3.0 - 0.8= 2.2; ionic bond.

Δχ(Na-O) = 3.5 - 0.9 = 2.6; ionic bond.

Δχ(Br-Br) = 2.9 - 2.9 = 0; nonpolar covalent.

Δχ(C-F) = 4 - 2.5 = 1.5; polar covalent.

Δχ(Na-F) = 4 - 0.9 = 3.1; ionic bond.

Δχ(H-F) = 4 - 2.1 = 1.9; polar covalent.

Δχ(F-F) = 4 - 4 = 0; nonpolar covalent.

Δχ(Al-Cl) = 3 - 1.6 = 1.4; polar covalent.

Δχ(Br-F) = 4 - 2.9 = 1.1; polar covalent.

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Drum X is 12 full of oil and Drum Y, which has twice the capacity of Drum X, is 23 full of oil. If all of the oil in Drum X is p

koban [17]

Answer:

11/12 full

Explanation:

The correct question is

Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 2/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what fraction of its capacity?

A) 3/4

B) 5/6

C) 11/12

D) 7/6

E) 11/6

Solution

Let Capacity of Drum X = 150L

and Drum Y = 300L

Oil in Drum X = 75 L

Oil in Drum Y = 2/3 * 300 = 200L

Oil poured in to Drum Y => Oil in Drum Y = 275L

Capacity Ratio = 275/300 = 11/12

3 0

4 years ago

A 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C. If the final temperature of water is 42.0 °C, what

ludmilkaskok [199]

The initial temperature of the copper piece if a 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C is 345.5°C

<h3>How to calculate temperature?</h3>

The initial temperature of the copper metal can be calculated using the following formula on calorimetry:

Q = mc∆T

mc∆T (water) = - mc∆T (metal)

Where;

m = mass
c = specific heat capacity
∆T = change in temperature

According to this question, a 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C. If the final temperature of water is 42.0 °C, the initial temperature of the copper is as follows:

400 × 4.18 × (42°C - 24°C) = 240 × 0.39 × (T - 24°C)

30,096 = 93.6T - 2246.4

93.6T = 32342.4

T = 345.5°C

Therefore, the initial temperature of the copper piece if a 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C is 345.5°C.

Learn more about temperature at: brainly.com/question/15267055

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2 years ago

What is potential or potenz hydrogen?

Mrrafil [7]

Answer:

potential or pontenz Hydrogen is the negative logarithm of molar hydrogen ion concentration.

Explanation:

potential Hydrogen or potenz Hydrogen stands for pH

potenz is in german

${ \tt{pH = - log [H {}^{ + } ]}}$

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3 years ago

If an element is more reactive, is it more likely to be found as an element or a compound?

laila [671]

It is more likely to be found as a COMPOUND, as it is more reactive, by the time we found them, they're already reacted with other elements or compounds to form new compounds.
Example is oxygen, it is very reactive, therefore we often found oxygen in water, which is H2O, in earth, instead of just pure oxygen.

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3 years ago

How do the molecules in a liquid behave?

inn [45]

Answer:

in a liquid, particles will flow or glide over one another, but stay toward the bottom of the container.

Explanation:

the attractive forces between particles are strong enough to hold a specific volume but not strong enough to keep the molecules sliding over each other.

7 0

4 years ago

Read 2 more answers