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
egoroff_w [7]
3 years ago
12

How many atoms of iodine are in 12.75g of CaI2? Hint. How many Iodines are there in one CaI2 particle?

Chemistry
1 answer:
xenn [34]3 years ago
4 0

Answer:

5.225x10^{22}atoms\ I

Explanation:

Hello!

In this case, since 12.75 g of calcium iodide has the following number of moles (molar mass = 293.89 g/mol):

n_{CaI_2}=12.75gCaI_2*\frac{1molCaI_2}{293.89gCaI_2}=0.0434molCaI_2

In such a way, since 1 mole of calcium iodide contains 2 moles of atoms of iodine, and one mole of atoms of iodine contains 6.022x10²³ atoms (Avogadro's number), we compute the resulting atoms as shown below:

atoms\ I=0.0434molCaI_2*\frac{2molI}{1molCaI_2} *\frac{6.022x10^{23}atoms\ I}{1molI} \\\\atoms\ I = 5.225x10^{22}atoms\ I

Best regards!

You might be interested in
Can you do my project please and I'll mark brainllest
Alex17521 [72]

Answer:

Whats the project?

Explanation:

8 0
3 years ago
I really need help guys in order to pass this. its kinda urgent!
lbvjy [14]
Female energy the answer is the first one
6 0
2 years ago
What is one source of CO?
Murljashka [212]

Answer:

Carbon monoxide (CO)—a colorless, odorless, tasteless, and toxic air pollutant—is produced in the incomplete combustion of carbon-containing fuels, such as gasoline, natural gas, oil, coal, and wood. The largest anthropogenic source of CO in the United States is vehicle emissions.

Explanation:

Hope this helps- good Luck! ^w

5 0
3 years ago
A weather map indicates that a low-pressure system is approaching a city. Attached to
timofeeve [1]

Answer:

The correct option is;

A warm front is approaching the city and temperatures will increase

Explanation:

A low pressure forms by the movement of air away from a particular spot such that the pressure reduces. The movement of air away from a spot occurs when there is a boundary of warm and cold air such that the air moves to maintain a uniform temperature.

Low pressure centers are associated with warm fronts, resulting in the fall of barometric pressure or observed low pressure and are characterized by a rise in temperature.

3 0
3 years ago
Hhhhhhhhhhheeeeeeelppppppp<br>will give brainliest
wlad13 [49]

Answer:

Kinetic energy.

Explanation:

7 0
2 years ago
Other questions:
  • Calculate the atomic mass of gallium, symbol Ga. Gallium has two isotopes: Ga-69 and Ga-71. The relative abundance of Ga-69 is 6
    12·1 answer
  • How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)​
    9·1 answer
  • Could you please help
    15·1 answer
  • PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
    14·2 answers
  • How many valence electrons would an element with atomic number 113 have?
    6·1 answer
  • Which idea did isaac newtons experiments with light supports?
    10·2 answers
  • Which solution is an example of an electrolyte A.)Methanol in water B.)Potassium iodide in water C.)Pentane in octane D.)Sucrose
    14·1 answer
  • A sample of nitrogen occupies a volume of 250 mL at 25 oC. What volume will it occupy at 95 oC?
    14·1 answer
  • In this activity, you are tasked with designing an airbag for a company that creates airbags for automobiles. You must design th
    12·1 answer
  • Write the condensed ground-state electron configurations of these transition metal ions, and state which are paramagnetic:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!