1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Radda [10]
3 years ago
8

What is the ph of a 0.10 m solution of ethylamine at 25 oc? the pkb of ethylamine at 25 ºc is 3.25. ethylamine is a weak base?

Chemistry
1 answer:
denis-greek [22]3 years ago
5 0
To determine the pH of a weak base, we use the equation:

pH = 14 + 0.5 log Kb

Therefore, 


pH = 14 + 0.5 log 3.25
pH = 14.26

A weak base is a base which does not fully dissociates into ions when in solution. The solution would contain cations, anions and the compound itself. Hope this helps.
You might be interested in
Which are precautions to take when working with heat and fire? Check all that apply.
Oduvanchick [21]
Wear face mask and holy the conical flask or test tube away from your face and body and dont put it on directly on fire or it
3 0
3 years ago
Any element above 92 on the
Fynjy0 [20]
False
explanation

All of the elements with atomic numbers 1 to 92 can be found in nature, have stable or very long half-life isotopes, and are created as common products of the decay of uranium and thorium.
5 0
2 years ago
Read 2 more answers
A weather balloon is filled with helium that occupies a volume of 5.00 × 10^4 L at 0.995 atm and 32.0°C. After it is released, i
DaniilM [7]

Answer:

The new volume is 5.913*10^4 L

Explanation:

Step 1: Write out the formula to be used:

Using general gas equation;

P1V1 / T1 =P2V2 /T2

V2 = P1V1T2 / P2T1

Step 2: write out the values given and convert to standard unit's where necessary

P1 = 0.995atm

P2 0.720atm

V1 = 5*10^4 L

T1 = 32°C = 32+ 273 = 305K

T2 = -12°C = -12 + 273 = 261K

Step 3: Equate your values and do the calculation:

V2 = 0.995 * 5*10^4 * 261 / 0.720 * 305

V2 = 1298.475 * 10^4 / 219.6

V2 = 5.913 * 10^4 L

So the new volume of the balloon is 5.913*10^4 L

3 0
3 years ago
NEED HELP PLEASE!!!!
VladimirAG [237]
When you first pull back on the pendulum, and when you pull it back really high the Potential Energy is high and the Kinetic Energy is low, But when up let go, and it gets right around the middle, that's when the Potential energy transfers to Kinetic, at that point the kinetic Energy is high and the potential Energy is low. But when it comes back up at the end. The same thing will happen, the Potential Energy is high, and the Kinetic Energy is low. Through all of that the Mechanical Energy stays the same. 

I hope this helps. :)
4 0
3 years ago
The maximum efficiency possible in an energy conversion process that is not limited by the second law of thermodynamics
Anna [14]

Answer:

100 %

Explanation:

The maximun efficiency possible (whem not limited by the  second law of thermodynamics) happens when all the energy used is transformed into the type of energy we required with no other transformations.

For example, in an engine we want that all the energy we supply is being converted to work. That's the ideal case, but in reality always some of that energy is lost in the form of heat.

5 0
3 years ago
Other questions:
  • How many molecules of HBr are present in 42.5 grams of HBr
    13·1 answer
  • A rock weighing 26.0g is placed in a graduated cylinder displacing the volume from 13.2mL to 23.5mL what is the density in grams
    6·1 answer
  • Please help me asap​
    13·1 answer
  • Which equation demonstrates that nuclear fusion forms elements that are heavier than helium?
    10·1 answer
  • Covalent Compounds HAVE a positive (+) or negative (-) charge <br> True or false
    6·1 answer
  • Identify each type of titration curve. note that the analyte is stated first, followed by the titrant.
    14·1 answer
  • What is the volume of 0.80 grams of O2 gas at STP?
    5·2 answers
  • During the winter months, many locations experience snow and ice storms. It is a common practice to treat roadways and sidewalks
    6·1 answer
  • How does the structure of each passage help determine the content of the passage?
    9·1 answer
  • Question 12 (1 point)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!