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
omeli [17]
3 years ago
12

Determine the number of moles in 4.21 x 10^23 molecules of CaCI2?????

Chemistry
1 answer:
Alla [95]3 years ago
8 0

Explanation:

Given parameters:

Number of molecules = 4.21 x 10²³ molecules

Unknown parameters:

Number of moles

Solution:

A mole can be defined as the amount of a substance that contains the avogadro's number of particles i.e 6.02 x 10²³

  To find the number of moles:

          Number of moles = \frac{number of molecules }{[tex]6.02 x 10^{23}}[/tex]

  Number of moles =  \frac{4.21 x 10[tex]^{23} }{6.02 x 10^{23}}[/tex]

Number of moles of CaCl₂ = 0.699moles

Learn more;

mole calculation brainly.com/question/13064292

#learnwithBrainly

You might be interested in
What is the molar mass of a substance
aleksandrvk [35]
<span>47.88 g/mol is the awsner your welcome</span>
3 0
4 years ago
Read 2 more answers
Which choice below would affect the rate of reaction in the opposite way from the other four?
bulgar [2K]
Adding a catalyst as this would speed up the reaction and the rest would slow it down
4 0
3 years ago
List at least three scientific disciplines related to chemistry mentioned or alluded to in the article. The Ozone Hole
SVETLANKA909090 [29]

Answer: biology, climate Science, astronomy etc.

Explanation:

The scientific disciplines that are related to chemistry mentioned or alluded to in the article are:

• Biology: Biology is a natural science which studies living organisms, and this include their molecular interactions, evolution, physical structure, and chemical processes.

• Astronomy: Astronomy is the study of space, and the universe. In astronomy, the stars, planets, and galaxies are all studied.

• Climate science: Climate science is also referred to as climatology and it's the scientific study of climate.

7 0
4 years ago
A physical change is a change to a sample of matter in which -
Readme [11.4K]

Answer:

its FALSE

Explanation:

FAKE   ITS NOT REAL

8 0
4 years ago
Which two solutions would be the BEST choice for their experiment?
Margaret [11]

Solutions 1 and 3 because they are strong acids and a strong base. <u>Option A.</u>

<u />

Strong acids and strong bases are completely ionized in an aqueous solution. Weak acids and weak bases also ionize, but only partially and the reaction is reversible. So you know if an acid or base is strong or weak. A simple way to determine strength is to add the acid or base to water. A higher reactivity means a stronger acid or base.

One of the simplest tests to determine whether a solution is an acid or base is the litmus paper test. To do this, dip a special strip of paper so-called litmus paper into the solution and observe the color of the paper. Litmus paper turns red in acidic solutions and blue in basic solutions. Sodium hydroxide is the strongest base because it completely dissociates to form sodium and hydroxide ions. These hydroxide ions are further treated with hydrogen ions by an acid to completely ionize the hydrogen ions.

Learn more about Experiment here:-https://brainly.ph/question/672153

#SPJ1

5 0
1 year ago
Other questions:
  • An engineer that designs buildings is a (n)
    8·1 answer
  • Which trait will an organism that receives one dominant gene and one recessive gene most
    8·2 answers
  • Is the following chemical reaction balanced?
    11·2 answers
  • Newton's second law of motion uses the formula which states that a force will cause a mass to accelerate. (f = m •
    7·2 answers
  • (3) consider a the titration of 1.0 m sulfurous acid (h2so3, ka1 = 1.5e-2, ka2 = 1.0e-7) with 2.0 m naoh. what is the ph at the
    13·1 answer
  • Can somebody give me a example of a mixture?
    11·2 answers
  • Which sample of ethanol has particles with the highest average kinetic energy?
    8·2 answers
  • In what eon did single-celled organisms appear?
    10·1 answer
  • Explain how a metal and a non-metal form an ION when they chemically react together.
    15·1 answer
  • How many molecules of water are in 1.8 moles of water
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!