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
suter [353]
3 years ago
5

If you have 0.50 mol of ca, how many atoms are present?

Chemistry
1 answer:
Evgen [1.6K]3 years ago
6 0
Answer is: there are 3.011·10²³ atoms of calcium.

n(Ca) = 0.50 mol; amount of substance(calcium).
Na = 6.022·10²³ 1/mol;  Avogadro's constant or number.
N(Ca) = n(Ca) · Na.
N(Ca) = 0.50 mol · 6.022·10²³ 1/mol.
N(Ca) = 3.011·10²³; number of calcium atoms.
The mole is an SI unit which measures the number of particles in substance. One mole is equal to <span><span>6.022</span></span>·<span><span><span>10</span></span></span>²³<span> atoms.</span>
You might be interested in
Rosa drew a flow chart of the carbon cycle.
Lisa [10]

The correct Answer is A.

The Flow chart of the Carbon Cycle, will look as follows:

1. Carbon dioxide in the atmosphere.

2. Producers undergo photosynthesis (in this process plants among other producers like algae, use CO2 to produce energy).

3. Consumers eat producers (a primary level of consumer like a rabbit eats the producers or plants).

4. Decomposers return Carbon to the soil and release waste.

And the  cycle continues again, by going back to step 1.

7 0
3 years ago
Read 2 more answers
A 25.0g piece of aluminum sits in a room and cools. It loses 4300.0 J of heat. If the initial temperature of aluminum is 125.3°C
Vesna [10]

Answer:

-65.8C

Explanation:

8 0
3 years ago
Please help! 20 Points!
Pani-rosa [81]

Answer: YOU MAY FIND THE ANSWER IF YOU SEARCH THE WEB.

Explanation:

7 0
3 years ago
Insulators prevent the loss of heat. A company is designing a mug that will keep coffee warm for a long time. Which one of these
Mumz [18]
Rubber, because it doesn’t conduct heat and it is a good insulator
3 0
2 years ago
When sugar dissolves in water are covalent bonds broken?
Amanda [17]
Gle's cache of http://www.middleschoolchemistry.com/lessonplans/chapter5/lesson4<span>. It is a snapshot of the page as it appeared on 21 Oct 2017 07:24:57 GMT.</span>
7 0
3 years ago
Other questions:
  • List or draw two ways to visually represent C6H14
    14·1 answer
  • Which particles are found in an atom have charges
    12·2 answers
  • Covalent bonds form between hydrogen and oxygen atoms in a water molecule as a result of the:
    6·1 answer
  • a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. what is its density
    8·2 answers
  • What type of substance is soda?
    14·1 answer
  • CHEMISTRY HELP PLEASE *answer all questions please*
    7·1 answer
  • HELP ASAP ILL GIVE YOU 40 POINTS IF YOUR CORRECT!
    14·2 answers
  • What mass of NaOH would need to be dissolved in 500.0 mL of water to produce a solution with a pH of 12.40
    12·1 answer
  • Hey siri how do you make ice cube ????????????????????????????????????
    13·2 answers
  • 1. Calcium chloride is a salt that is added to roads and sidewalks
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!