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
Juliette [100K]
4 years ago
13

determine the total water hardness in a 25.00 mL sample of water that require 12.45 ml of 0.01111m edta for titration

Chemistry
1 answer:
Ksenya-84 [330]4 years ago
4 0
Water hardness is often expressed or defined as the content of the ions of Calcium and magnesium that make it "hard". To know the total hardness of water, EDTA titration is often used expressed as the mol of EDTA per liter of Solution.
mol of solute = (12.45 mL)(0.01111 mol/L)*(1L/1000mL)=1.3832 x 10-4.
Therefore, water hardness = 1.3832x10-4 mol/0.025 L = 5.53278x10^-3 M
You might be interested in
Which list of elements is arranged in order of increasing electronegativity?
muminat
K, ca, sc is the right answer. Take a look at table S of your chemistry reference table. 
6 0
3 years ago
Read 2 more answers
What happens first during cellular respiration
Yuliya22 [10]

Answer:

glcolysis

Explanation:

Glcolysis uses glucose to create ATP within the cytoplasm of the cell.

7 0
3 years ago
What will happen as the excited electron of arsenic atoms return to lower energy levels?
aleksley [76]
 Atoms will be split into hydrogen and oxygen. A deep blue solution will be formed. Light will be given off. It will create a small explosion.

please mark me as brainlest , thanks!
8 0
3 years ago
Micheal has a substints that he puts in container 1 the substance has a volume of 5 cubic meters
bazaltina [42]

Answer: Solids and liquids don't suddenly change their volumes.

But gases do...they expand to fill whatever container you

put them in.

Michael's mystery substance is in the gaseous phase.

Explanation:

8 0
3 years ago
A student observed that a small amount of acetone sprayed on the back of the hand felt very cool compared to a similar amount of
Alla [95]

Answer:

D.) The higher vapor pressure of acetone results in more rapid evaporation and heat loss

Explanation:

Acetone being liquid with very low boiling point and hence can be easily be converted to gaseous state .

And ,

Therefore have higher vapour pressure and as liquid gets converted to gas , the process of evaporation takes place and leads to loss of heat .

Hence , from the given options , the most appropriate option according to given statement of the question is ( d ) .

4 0
4 years ago
Other questions:
  • what if you drop a small magnet repeatedly it become demagnetized. explain. what is happening sub-atomically?
    11·1 answer
  • What type of orbital overlap is responsible for the π bond between carbon and oxygen in the molecule below?
    7·1 answer
  • 9. Which statement best describes the nucleus of
    11·2 answers
  • Give an example of an unbalanced force.
    15·2 answers
  • What is the point of doing an experiment. Help thank you​
    10·2 answers
  • 1.While cooking, if the bottom of the vessel is getting blackened on the outside.
    5·1 answer
  • A student flipped a coin 1000 times and recorded the outcome of each
    14·1 answer
  • what should you do if you want to decrease the rate of a chemical reaction between a solid and a liquid​
    11·1 answer
  • TTILA U.
    10·1 answer
  • Iron(II) sulfide has a primitive cubic unit cell with sulfide ions at the lattice points.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!