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2 years ago

Describe how the pH of anti-acid powder can be determined

Chemistry

1 answer:

alexdok [17]2 years ago

5 0

This can be done by Crystallization, filtration or sublimation.

Ammonium chloride can be seperated from a mixture Sodium chloride and ammonium chloride by the process of sublimation. Ammonium chloride can be sublimed whereas Sodium chloride can be sublimed. When a mixture of sodium chloride and ammonium is heated.

to learn more about Methods of seperation click here brainly.com/question/5441290

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What is the boiling point of 5 ml of alcohol

NeTakaya

173.1f is the answer I believe, please let me know if I'm wrong then I would try to make up for it

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3 years ago

52.0 g of LiCl represents ______ moles of LiCl. A) 0.88 Eliminate B) 1.23 C) 1.51 D) 2.45

xxMikexx [17]

The correct option is a

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3 years ago

If a molecule can hydrogen bond, does it guarantee that it will have a higher boiling point than a molecule that cannot? Explain

saul85 [17]

Answer:

a): not necessarily due to London Dispersion Forces and dipole-dipole interactions.

b): not necessarily due to London Dispersion Forces.

Explanation:

There are three major types of intermolecular interaction:

Hydrogen bonding between molecules with H-O, H-N, or H-F bonds and molecules with lone pairs.
Dipole-dipole interactions between all molecules.
London dispersion forces between all molecules.

The melting point of a substance is a result of all three forces, combined.

Note that the more electrons in each molecule, the stronger the London Dispersion Force. Generally, that means the more atoms in each molecule, the stronger the London dispersion force. The strength of London dispersion force between large molecules can be surprisingly strong.

For example, $\rm H_2O$ (water) molecules are capable of hydrogen bonding. The melting point of $\rm H_2O$ at $\rm 1\; atm$ is around $0 \; ^{\circ}\rm C$ . That's considerably high when compared to other three-atom molecules.

In comparison, the higher alkane hexadecane ( $\rm C_{16}H_{34}$ , straight-chain) isn't capable of hydrogen bonding. However, under a similar pressure, hexadecane melts at around $18\; ^{\circ}\rm C$ above the melting point of water. The reason is that with such a large number of atoms (and hence electrons) per molecule, the London dispersion force between hexadecane molecules could well be stronger than that the hydrogen bonding between water molecules.

Similarly, the dipole moments in HCl (due to the highly-polar H-Cl bonds) are much stronger than those in hexadecane (due to the C-H bonds.) However, the boiling point of hexadecane under standard conditions is much higher (at around $287\; \rm ^\circ C$ than that of HCl.

3 0

3 years ago

Adolfo drank some red punch and grimaced at the flavor. His little brother had made the pitcher of punch with too much sugar. Wh

drek231 [11]

I believe that the saliva interacting with sugar molecules is what allowed Adolfo’s brain to register the extra-sugary flavor of the punch

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3 years ago

Polychlorinated biphenyls (PCBs), which were formerly used in the manufacture of electrical transformers, are environmental and

lubasha [3.4K]

C12H4Cl6 + 23 O2 + 2 H2O → 24 CO2 + 12 HCl 

(a) 
(13.5 mol O2) x (2 mol H2O / 23 mol O2) = 1.17 mol H2O 

(b) 
(17.6 mol H2O) x (12 mol HCl / 2 mol H2O) x (36.4611 g HCl/mol) = 3850 g HCl 

(c) 
(90.4 g HCl) / (36.4611 g HCl/mol) x (24 mol CO2 / 12 mol HCl) = 4.96 mol CO2 

(d) 
(106.01 g CO2) / (44.00964 g CO2/mol) x (2 mol C12H4Cl6 / 24 mol CO2) x (360.8782 g C12H4Cl6/mol) = 
72.4 g C12H4Cl6 

(e) 
(4.2 kg C12H4Cl6) / (360.8782 g C12H4Cl6/mol) x (12 mol HCl / 2 mol C12H4Cl6) x (36.4611 g HCl/mol) = 
2.5 kg HCl

4 0

3 years ago

Read 2 more answers