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3 years ago

Which compound most likely contains polar covalent bonds?

1 answer:

3 0

I would say water; water is extremely polar, and this is why it can break one of the strongest bonds, ionic bonds. NaCl, as you probably know, is a salt, and dissolves in water. However, the ionic bond holding the Na+ and the Cl- is extremely strong; the boiling point of NaCl is at 1413 degrees celcius (water is at 100 degrees celcius). This means that it requires A LOT of energy to break the bond, but water is able to dissolve and break the bond very easily. It is very polar, so I would answer your question with water. And the bond connecting the H and the O is a covalent bond.

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Identify the type of bonding molecular geometry and intermolecular forced experienced by the compounds hf and hbr which substanc

Serhud [2]

Both HF and HBr experience H-bond, dipole, and dispersion forces. These forces allow the compounds to have stronger bonds with each other. HF would experience a higher amount of attraction between its molecules. This is because fluorine is more electronegative than bromine.

Hope this helps!

6 0

3 years ago

Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. If 100 grams of hydrochloric acid reacts with 100 g

LenaWriter [7]

Answer is hydrochloric acid

Hope this helps!

5 0

3 years ago

Read 2 more answers

A pharmacist has a 12% solution of boric acid and a 20% solution of boric acid. How much of each must he use to make 80 grams of

Iteru [2.4K]

Answer:

He must use 50g of the 12% solution and 30 g of the 20% solution.

Explanation:

Call x the amount of 12% boric acid solution to be used.

The content of acid of that is: 0.12x

Since he wants to make 80 grams of solution, the amount of 20% boric acid solution to be used is 80 - x.

The content of acid of that is{ 0.20(80 - x).

The final solution is 15% concentrated.

The content of boric acid of that is 0.15 × 80 g.

Now you have can write your equation:

$0.12x+0.20(80-x)=0.15\times 80$

Solve:

$0.12x + 16 - 0.20x=12\\\\-0.08x=12-16\\\\0.08x=4\\\\x=4/0.08\\\\x=50$

That is 50 grams of the 12% solution of boric acid.

Calculate the amount of the 20% solution of boric acid:

$80-x=80-50=30$

That is 30 grams.

Then, he must use 50g of the 12% solution and 30 g of the 20% solution.

5 0

3 years ago

A cube of steel with a mass of 150 grams is heated from 60°C to 150°C.

yan [13]

Answer:

The energy lost by the water is given by:

where

m = 3.0 kg = 3000 g is the mass of water

Cs = 4.179 J/g•°C is the specific heat

is the change in temperature

Substituting,

The energy added to the aluminium is given by:

where

m = 0.30 kg = 300 g is the mass of aluminium

Cs = 0.900 J/g•°C is the specific heat

is the change in temperature

Substituting,

4. 42.9 g

The mass of the water sample is given by

where

is the heat added

is the temperature change

Cs = 4.179 J/g•°C is the specific heat

5. 115.5 J

The heat used to heat the copper is given by:

where

m = 5.0 g is the mass of copper

Cs = 0.385 J/g•°C is the specific heat

is the change in temperature

6. 0.185 J/g•°C

The specific heat of iron is given by:

where

Q = -47 J is the heat released by the iron

m = 10.0 g is the mass of iron

is the change in temperature

Substituting,

Explanation:

8 0

3 years ago

Which of these solutes raises the boiling point of water the most?

Vlad [161]

I think the answer would be Ionic sodium phosphate (Na3PO4) because it has the greatest boiling point elevation.

7 0

3 years ago

Read 2 more answers