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3 years ago

The presence of hydrogen bond in most molecules is responsible for the following except

Chemistry

2 answers:

-Dominant- [34]3 years ago

5 0

That answer is either 3 or 4, but I truly forgot which of the two.

Rom4ik [11]3 years ago

4 0

Answer:

3. low boiling point

Explanation:

There are primarily 4 types of intermolecular forces which exists between molecules. In the increasing strength, these forces can be grouped as:

Ionic bond > hydrogen bonds > dipole-dipole > dispersion forces

Hydrogen bond is essentially a bond formed between H-atom and a highly electronegative atom like N, O, F etc. These are strong forces of attraction. Greater the H-bonding greater is the attractive force which will result in molecules having high melting and very high boiling points. It will also increase the polarity of the molecule making it more soluble in water.

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What is the flow of science ?

Brrunno [24]

The movement of liquids and gases is generally referred to as a flow,” A concept that describes how fluids behave and how they interact with their surrounding environment .

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3 years ago

A 12-liter tank contains helium gas pressurized to 160 \rm atm.How many 3-liter balloons could the 12-L helium tank fill? Keep i

Vikentia [17]

Answer:

636 balloons

Explanation:

If we assume that helium gas follows an ideal gas behaviour, we can use the ideal gas law to solve this problem as follows:

We consider two different states, the initial given by the conditions of the problem statement and the final, when the tank reaches atmospheric pressure and it's no longer able to fill balloons: $P_{1}=160 atm\\V_{1}=12 L\\P_{2}=1 atm\\V_{2}= ?$
To find out what would be this volume 2, we use the Boyle's Law: $P_{1}V_{1}=P_{2}V_{2}\\V_{2}=\frac{P_{1}V_{1}}{P_{2}} \\V_{2}=\frac{160 atm \times 12L}{1 atm}\\V_{2}=1920 L$
Now we find the available volume to fill the balloons by substracting both, volume 2 and volume 1: $V_{b}=V_{2}-V_{1}=1920L-12L=1908 L$
Finally, we determine the quantity of ballons by dividing that available volume between the volume of each ballon: $B=\frac{1908L}{3L} =636 balloons$

8 0

3 years ago

An ion of oxygen- 16 contains 8 protons and has a 2- charge. How many electrons does it have?

Verdich [7]

Answer:

i would say 10, so the anser is A.

Explanation:

because there are the same number of protons and electrons, therefore for a regular O, you are supposed to have only 8 protons, but it is charged, thus, whatever the charge is will be taken into consideration into how much the proton and electron doe it have. Thus, for this case, it has 10, because the charge is negative and you have 8 electron plus 2 = 10.

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3 years ago

When a substance is added to water, bubbles form. How can you confirm the type of change that took place?

weeeeeb [17]

A
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3 years ago

The mass number of an atom is obtained by totaling the number of _____ and _____.

son4ous [18]

Mass number is the sum of protons and neutrons inside an atom.

Atomic mass = no. of protons + no. of neutrons

8 0

3 years ago

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