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
jasenka [17]
3 years ago
14

You want to make 100 mL of a 2.5 M stock solution of calcium chloride (molecular weight 110.98 g/mol). How many grams of calcium

chloride do you need to weigh out in order to make this solution? Round your answer to the nearest tenth of a gram.
Chemistry
1 answer:
Evgesh-ka [11]3 years ago
5 0

Answer:

27.7 g

Explanation:

  • 100 mL = 0.100 L

To solve this problem we use the definition of <em>molarity</em>:

  • M = mol / L

From the problem we're given M = 2.5 M and volume = 0.100 L. We use the above formula and <u>calculate the required moles of calcium chloride</u> (CaCl₂):

  • 2.5 M = moles / 0.100 L
  • moles = 0.25 moles CaCl₂

Finally we use the<em> molecular weight</em> of calcium chloride to <u>calculate the required mass</u>:

  • 0.25 moles CaCl₂ * 110.98 g/mol = 27.745 g CaCl₂

Rounding to the nearest tenth of a gram the answer is 27.7 g.

You might be interested in
How many moles of calcium chloride would react with 5. 99 moles of aluminum oxide?
slega [8]

There are 17.97 moles of calcium chloride would react with 5. 99 moles of aluminum oxide .

The balanced chemical equation between  reaction between calcium chloride and aluminum oxide is given as,

3CaCl_{2} (aq)+Al_{2} O_{3} (s) → 3CaO_{2} (s)+2Al Cl_{3} (aq)

The molar ratio of above reaction is  3:1

It means 3 moles of calcium chloride is require to react one mole of aluminum oxide.

The number of moles of calcium chloride requires to react with  5. 99 moles of  aluminum oxide  = 3 × 5. 99 = 17.97 moles

The equation in which number of atoms of elements in reactant side is equal to the number of atoms of elements in product side is called balanced chemical equation .

learn more about calcium chloride

brainly.com/question/15296925

#SPJ4

6 0
2 years ago
KOH(Ac) + HNO3 → KNO3(Ac) + H2O<br> cual es su reacio
Bumek [7]

Answer:

corbonization for dictionnal

Explanation:

correct

6 0
2 years ago
Read 2 more answers
True or False ... In a chemical change, a new<br> substance is formed.
nikitadnepr [17]
The answer is true the answer has to be 20 words long so true true true true true true
7 0
3 years ago
Lithium peroxide chemical formula ?
Andreyy89
<span>Li2O2 is the formula

</span>
7 0
3 years ago
Read 2 more answers
A cylinder and piston assembly (defined as the system) is warmed by an external flame. The contents of the cylinder expand, doin
melomori [17]

Answer:

ΔE = 73 J

Explanation:

By the first law of thermodynamics, the energy in the system must conserved:

ΔE = Q - W

Where ΔE is the internal energy, Q is the heat flow (positive if it's absorbed by the system, and negative if the system loses heat), and W is the work (positive if the system is expanding, and negative if the system is compressing).

So, Q = + 551 J, and W = + 478 J

ΔE = 551 - 478

ΔE = 73 J

3 0
3 years ago
Other questions:
  • Consider the following intermediate chemical equations. When you form the final chemical equation, what should you do with CO? C
    10·1 answer
  • Is helium a metal, non metal or metalloid?
    5·1 answer
  • When involved in a chemical reaction with a metal, what charge will elements in the oxygen family most likely form?
    9·1 answer
  • Which has a greater ionization energy, Ne or Gallium?
    6·1 answer
  • What is a Cilla ? (In drawing)
    11·1 answer
  • A - ion (negative ion, one with extra negative charge)?
    8·1 answer
  • What statements accurately describe matter? Check all that apply
    6·1 answer
  • 2.0 kilograms of lithium hydroxide can “scrub”, or remove, how many liters of carbon dioxide at standard conditions?
    10·1 answer
  • NEEEEEEEED HELP HEALTH CLASS
    6·1 answer
  • Why do you think the astronomical unit is not used to measure distances on earth?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!