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EastWind [94]
3 years ago
13

Which statement describes a property of covalent compounds? They have a high boiling point because of strong intermolecular forc

es. They have a low boiling point because of weak intermolecular forces. They have a low melting point because of strong intermolecular forces. They have a high melting point because of weak intermolecular forces.
Chemistry
2 answers:
Ksenya-84 [330]3 years ago
7 0

Answer: Option (b) is the correct answer.

Explanation:

A compound in which atoms share electrons with each other are known as covalent compounds.

Since there are no strong intermolecular force of attraction between the atoms hence, there bond can be easily broken down.

Thus, we can conclude that out of the given options, the statement they have a low boiling point because of weak intermolecular forces.

svet-max [94.6K]3 years ago
3 0
The correct answer is:

They have a low boiling point because of weak intermolecular forces.
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A mouse is placed in a sealed chamber with air at 769.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2 a
svlad2 [7]

<u>Answer:</u> The amount of oxygen gas consumed by mouse is 0.202 grams.

<u>Explanation:</u>

We are given:

Initial pressure of air = 769.0 torr

Final pressure of air = 717.1 torr

Pressure of oxygen = Pressure decreased = Initial pressure - Final pressure = (769.0 - 717.1) torr = 51.9 torr

To calculate the amount of oxygen gas consumed, we use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 51.9 torr

V = Volume of the gas = 2.20 L

T = Temperature of the gas = 292 K

R = Gas constant = 62.364\text{ L. Torr }mol^{-1}K^{-1}

n = number of moles of oxygen gas = ?

Putting values in above equation, we get:

51.9torr\times 2.20L=n\times 62.364\text{ L. Torr }mol^{-1}K^{-1}\times 292K\\\\n=\frac{51.9\times 2.20}{62.364\times 292}=0.0063mol

To calculate the mass from given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of oxygen gas = 0.0063 moles

Molar mass of oxygen gas = 32 g/mol

Putting values in above equation, we get:

0.0063mol=\frac{\text{Mass of oxygen gas}}{32g/mol}\\\\\text{Mass of oxygen gas}=(0.0063mol\times 32g/mol)=0.202g

Hence, the amount of oxygen gas consumed by mouse is 0.202 grams.

5 0
3 years ago
Convert this molecular formula into a structure that is consistent with the usual bonding patterns. C2h6o if more than one struc
Eddi Din [679]

The given formula contains two carbon along with six hydrogen and an oxygen.

The possible isomers from  C_2H_6O are ethanol and dimethyl ether.

Ehtanol is an alcohol containing a hydroxyl group whereas dimethyl ether is an ether containing an oxygen between two methyl

The structure of two isomers are:

8 0
3 years ago
Read 2 more answers
D Which compound is insoluble in water?
densk [106]

Answer:

Examples of substances insoluble in water: oil, acetone, ether

Explanation:

Such examples of substances are non-polar and do not dissolve in water (polar compound). The classic example is oil floating in water (this happens because oil has a lower density than water).

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3 years ago
3. What other chemical reactions release oxygen gas?
ycow [4]

Answer:

When Hydrogen Peroxide and Sodium Hypochlorite (NaOCl) are mixed, the two will react vigorously to produce Oxygen gas.

Explanation:

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3 years ago
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Answer:

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