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
Leokris [45]
3 years ago
8

If 20.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 37.5 mL of 0.124 M HCl, what is the concentration of the C

a(OH)2 solution? Show all of the work needed to solve this problem.
Ca(OH)2 + 2 HCl yields 2 H2 O + CaCl2
Chemistry
1 answer:
Nady [450]3 years ago
6 0
You first need to write the balanced chemical reaction for what is going on.
Ca(OH)₂+2HCl→2H₂O+CaCl₂

After you make the balanced chemical reaction, First you find the moles of HCl used.  To do this multiply 0.0375L by 0.124M to get 0.00465mol HCl.  Then you multiply 0.00465mol HCl by (1mol Ca(OH)₂)/(2mol HCl) to get 0.002325mol Ca(OH)₂.  Finally to find concentration of Ca(OH)₂ used you divide 0.002325mol by 0.020L to get 0.116M Ca(OH)₂.
Therefore the concentration of the unknown solution of Ca(OH)₂ was 0.116M.

I hope this helps.  Let me know if anything is unclear.
You might be interested in
What are more than 5 abiotic things in the desert?
Anna71 [15]
Abiotic things are like rocks...dirt...water vs. biotic is living things or something that was living
7 0
3 years ago
Read 2 more answers
An atom that has 13 protons and 15 neutrons is isotope of the element A.) nickel B.) silicon C.) aluminum D.) phosphorus. Why?
joja [24]

An atom that has 13  protons and 15  neutrons  is isotope  of Aluminium (answer C)

<u><em>Explanation</em></u>

  • Isotope  is a form of the same element with   the equal number of protons but difference number  of neutrons  in  their nuclei.
  • In other words isotope has the same  atomic number but different mass  number.
  • Atomic  number of a element is determined by number of  protons of an element.

  • from the  periodic table   Aluminum in atomic number 13 therefore  it has 13 protons  <em>therefore an atom that  has 13  protons and 15 neutrons is   a isotope  of Aluminium. </em>
6 0
3 years ago
Read 2 more answers
SOME ONE HEEEEELLLLPPPPPPPP PLEAAASEEE
stellarik [79]

Answer:

look up chemical board it will help you

Explanation:

6 0
3 years ago
Iron Choose one: A. is alloyed with carbon and chromium to make stainless steel. B. was the first of the common metals (iron, al
Lostsunrise [7]

Answer:

A. is alloyed with carbon and chromium to make stainless steel.

Explanation:

Steel is an alloy formed mainly of iron and carbon but some other metals like chromium are also added in little amounts.

Is steel, the percentage of iron and carbon together is about 90% and the rest metals fall in the 10% part.

Although the cost of steel is low, it has a very high tensile strength and that's why it is used in tools, ships, buildings, trains and in various types of infrastructures.

7 0
3 years ago
How many atoms of argon occupy 30.0L
Airida [17]
5.18mL i hope this helps i hope this does to!
6 0
3 years ago
Other questions:
  • What is an energy sublevel
    5·1 answer
  • Which of the following must be true about a reaction if it is only spontaneous at high temperatures?
    8·1 answer
  • Is light and sound matter? why or why not?
    5·1 answer
  • What is the volume of 6.50g of gold if the density of gold is 19.3g/ml?
    6·1 answer
  • Please help i dont understand it
    8·2 answers
  • The electron configuration for Cu is
    11·1 answer
  • What is the formula for tricarbon heptafluoride?<br> C2F3<br> CF7<br> C3F7<br> C773
    11·1 answer
  • Waves form when energy is transferred to ocean
    7·1 answer
  • How many molecules of each of the cofactors are produced when two acetyl-SCoA molecules pass through the citric acid cycle?
    6·1 answer
  • A lion catches and eats a deer. What is this relationship ?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!