Determine the density of CO2 gas at STP.

Answer : The volume of concentrated hydrochloric acid is, 0.25 liters

Explanation :

Using neutralization law,

where,

= molarity of concentrated hydrochloric acid = 12 M = 12 mole/L

= molarity of hydrochloric acid = 6 M = 6 mole/L

= volume of concentrated hydrochloric acid = ?

= volume of hydrochloric acid = 500 ml = 0.5 L

Now put all the given values in the above formula, we get the volume of concentrated hydrochloric acid.

Therefore, the volume of concentrated hydrochloric acid is, 0.25 liters

Answer is (4) - CH₃CH₂OH and CH₃OCH₃.

Both CH₃CH₂OH and CH₃OCH₃ have same molecular formula as C₂H₆O. But CH₃CH₂OH is an alcohol and CH₃OCH₃ is an ether.

Although two compounds have a same molecular formula, the atomic arrangement of those compounds differs from each other.

Hence, CH₃CH₂OH and CH₃OCH₃ are isomers of the formula C₂H₆O.

Due to the different arrangement of atoms, both compounds have different chemical and physical properties.

Answer:

1 gram molecular mass of this compound = 20

Explanation:

Gram Molecular Mass is the mass of a chemical that is obtained by the number of grams in the chemical determined by the masses obtained from the periodic table and the number of mols determined from the Chemical formula.

That's quite a mouthful. Here's what it means in plain language.

Find the Gram molecular mass of C2H6

The periodic table tells us that 1 mol of C2H6 has

2 mols of Carbon which is 2*C or 2 * 12 = 24 and

6 mols of Hydrogen which is 6*H or 6*1 =  6

The gram molecular mass is 6 + 24 = 30

Your question doesn't require all that background.

5 gram molecular masses = 100 grams       Given

1 gram molecular mass   = x

5/1 = 100/x          Cross multiply

5x = 100             Divide by 5

x = 100 / 5

x = 20

The gram molecular mass of a compound whose 5 moles has a mass of 100 grams would be 20 grams per mole.

The gram molecular mass of a substance is simply the mass (in gram) of 1 mole of the same substance. In other words, the gram molecular mass of a substance is also the same as the molar mass of the substance.

In this case, 5 moles of the substance weigh 100 grams

Therefore, 1 mole of the same substance would weigh:

                     1 x 100/5 = 20 grams

More on the gram molecular mass can be found here: brainly.com/question/11865839

The strength of intermolecular forces of attraction varies depending on the type of molecules involved. In general, the order of increasing strength of intermolecular forces is as follows:

1. **London Dispersion Forces (Van der Waals Forces):** These are the weakest intermolecular forces and occur in all molecules. They are caused by temporary fluctuations in electron distribution, leading to temporary partial charges. London dispersion forces are stronger in larger and more polarizable molecules.

2. **Dipole-Dipole Forces:** These forces occur between polar molecules with permanent dipoles. They are stronger than London dispersion forces and result from the attraction between the positive end of one molecule and the negative end of another.

3. **Hydrogen Bonding:** This is the strongest type of intermolecular force. It occurs when hydrogen is bonded to a highly electronegative atom (such as nitrogen, oxygen, or fluorine) and is attracted to another electronegative atom in a different molecule. Hydrogen bonds are responsible for the unique properties of substances like water and ammonia.

So, hydrogen bonding generally represents the strongest intermolecular force of attraction among these three types. However, it's important to note that the actual strength of these forces can also depend on factors such as molecular size, shape, and temperature.

Hope you understand