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Zolol [24]
3 years ago
9

Explain the large difference in boiling points between CH4 and CBr4

Chemistry
1 answer:
BaLLatris [955]3 years ago
8 0

CBr4 is larger than CH4, so it has a higher London dispersion, A type of Intermolecular force. Higher force means longer time to

bring the substance to boil,Meaning a higher boil point

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Calculate the energy required to heat 322.0g of ethanol from −2.2°C to 19.6°C . Assume the specific heat capacity of ethanol und
just olya [345]

Answer:

There is 17.1 kJ energy required

Explanation:

Step 1: Data given

Mass of ethanol = 322.0 grams

Initial temperature = -2.2 °C = 273.15 -2.2 = 270.95K

Final temperature = 19.6 °C = 273.15 + 19.6 = 292.75 K

Specific heat capacity = 2.44 J/g*K

Step 2: Calculate energy

Q = m*c*ΔT

⇒ m = the mass of ethanol= 322 grams

⇒ c = the specific heat capacity of ethanol = 2.44 J/g*K

⇒ ΔT = T2 - T1 = 292.75 - 270.95 = 21.8 K

Q = 322 * 2.44 * 21.8 = 17127.8 J = 17.1 kJ

There is 17.1 kJ energy required

3 0
3 years ago
Select the statements that describe a method which can be used to make a buffer. (A) Partially neutralize a strong acid solution
Hunter-Best [27]

Answer:

B) Add appropriate quantities of weak acid and its conjugate base to water.

C) Partially neutralize a weak acid solution by addition of a strong base.

(D) Partially neutralize a weak base solution by addition of a strong acid.

Explanation:

A buffer solution is made by a weak acid and its conjugated base or a weak base and its conjugated acid.

If you add a weak acid to water, you can adjust the pH of the buffer solution by adding a strong base.

If ypu add a weak base to water, you can adjust the pH of the buffer solution by adding a strong acid.

3 0
3 years ago
Read 2 more answers
Can anyone answer this?? Thanks in advance <br><br> AlCl3 + Cu = ?
Kazeer [188]
Reaction won't occur
Because the activity of Cu is less than Al
3 0
3 years ago
PLSSS HELP
lions [1.4K]
Sun, use fusion to combine hydrogen atoms into helium atoms,
5 0
3 years ago
Read 2 more answers
How many moles are in 5.6x1025 molecules of calcium oxide?
Vlad1618 [11]

Answer:

<h2>93.02 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{5.6 \times  {10}^{25} }{6.02  \times  {10}^{23} }  \\  = 93.023...

We have the final answer as

<h3>93.02 moles</h3>

Hope this helps you

8 0
3 years ago
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