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
Sedbober [7]
2 years ago
15

How many grams of calcium hydroxide is produced from 9.4 g of calcium chloride in this balanced

Chemistry
1 answer:
Yuliya22 [10]2 years ago
7 0

Answer:

6.27 [gr].

Explanation:

the required mass can be calculated as:

m[Ca(OH)₂]=M[Ca(OH)₂]*m[CaCl₂]/M[CaCl₂], where M - molar mass [gr/mol], m - mass [gr];

m[Ca(OH)₂]=9.4*74/111≈6.2(6) [gr].

You might be interested in
Which substance can not be decomposed by a chemical change?
slamgirl [31]
The answer is (2) Copper. Because copper is consist of atom. If it is decomposed, the atom will be changed. While chemical change is just the break down and form of chemical bonds between atoms. 
6 0
3 years ago
Do all titrations of a strong base with a strong acid have the same ph at the equivalence point?
Luba_88 [7]

Answer:

  • <u>Yes,</u> <em>all titrations of a strong base with a strong acid have the same pH at the equivalence point.</em>

       This <u>pH is 7.</u>

Explanation:

<em>Strong acids</em> and <em>strong bases</em> ionize completely in aqueous solutions. The ionization of strong acids produce hydronium ions, H₃O⁺, and the ionization of strong bases produce hydroxide ions, OH⁻.

Since the ionization of strong acids and bases progress until completion, there is not reverse reaction.

The definition of pH is pH = - log [H₃O⁺]. Acids have low pH (below 7, and greater than 0) and bases have high pH (above 7 and less than 14). Neutral solutions have pH = 7.

Acid-base titrations are a method to determine the concentration of an acid from the known concentration of a base, or the concentraion of a base from the known concentration of an acid.

The<em> equivalence point</em> of the titration is the point at which the the number of moles of hydronium ions and hydroxide ions are equal.

Then, at that point, the hydronium and hydroxide ions will be in the stoichiometric proportion to form a neutral solution, i.e. the pH of the solution wiill be 7.

7 0
3 years ago
A simple definition of cells
Stolb23 [73]

Answer:

Cells are the basic structural and functional unit of life.

5 0
2 years ago
What is "X" in the following reaction?
charle [14.2K]
X is the answer that we do not know yet!!:)
4 0
2 years ago
Can someone please help me
Mrrafil [7]
I think the answer would be A because O is oxygen and it has 7. Although it’s in parentheses and has a 2 on the outside of those parentheses, so you would multiply and 7 x 2 = 14. 14 is larger than the other ones.
Hopefully I’m right and hopefully that helps.
8 0
3 years ago
Other questions:
  • Explain why thermal and electrical conductivity is so high with copper
    11·1 answer
  • The minimum amount of energy necessary to start a chemical reaction is
    7·2 answers
  • 9. How do changes in global temperatures affect ocean acidification? (and sea life)
    14·1 answer
  • What is a cool 1 week or less science fair project for grade 9?
    13·2 answers
  • 's A pitcher contains 1 gallon of
    11·1 answer
  • Find the volume in m3 of 52.6 lbm of iron:
    13·1 answer
  • The circular flow model interacts between which sectors of the economy? Select THREE answers.
    14·1 answer
  • Are all cells the same? Give examples
    8·2 answers
  • PLEASE HELP NEED AN ANSWER ASAP!!!!
    9·1 answer
  • Which field of study is shown in the picture? O A. chronology O B. anthropology O C. cartography O D. archaeology​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!