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
stiv31 [10]
3 years ago
12

If the edge length of the unit cell is 705.2 pm, what is the density of KI in g/cm3.

Chemistry
1 answer:
Kipish [7]3 years ago
5 0

The density  is 3.144 g / cm^3.

<u>Explanation</u>:

If effective number of atom in NaCl type structure, z = 4

a = 705.2 pm ⇒ In centimeter = 705.2 \times 10^-10

Na = 6.023 \times 10^23

density = (molecular weight) (z) / (Na) (a^3)

where molecular weight of KI is 166 g,

           Z represents the atomic number

density = (molecular weight) (z) / (Na) (a^3)              

             = (166 \times 4) / (6.023 \times 10^23) \times (705.2 \times 10^-10)

density = 3.144 g / cm^3.

You might be interested in
A prairie dog eats grass. A coyote eats the prairie dog. This is an example
Oduvanchick [21]

Answer:

This is an example of a food chain

Explanation:

Think of it as a chain reaction. The grass feeds and nourishes the prairie dog. Upon eating the prairie dog, the coyote gets the nutrients from both the grass the prairie dog ate and from the prairie dog itself.

5 0
2 years ago
Which scientist discovered the neutron and gave us the current basic model of
Evgesh-ka [11]

Answer:

c

Explanation:

i read a artical on him and it said

love yall;]

6 0
3 years ago
Which property of potential energy distinguishes it from kinetic energy
satela [25.4K]
The property of potential energy that distinguishes it from kinetic energy are Shape and position 
8 0
3 years ago
Please help on 44. /45./ 46./47,
Aleonysh [2.5K]
The only one that I can do without google is 47. Sorry that I can't answer the others. The answer to 47 is this: you know that the western side of the hill has the steepest slope because the ovals showing altitude are way closer together. The closer the circles/ovals are, the steeper the slope is.

Sorry if this doesn't help much, but I answered what I could without cheating.

Foxeslair
4 0
3 years ago
Which factors affect electronegativity?
nasty-shy [4]
I believe d is the correct answer
3 0
3 years ago
Read 2 more answers
Other questions:
  • Dalton's atomic theory stated?
    11·1 answer
  • An iron fence is left unpainted, and it reacts with the oxygen in the air, forming rust. The formation of rust is an oxidation-r
    6·2 answers
  • Calcium chloride contains only calcium and chloride. What is the formula for this compound?
    13·2 answers
  • The scientific method is great, but how do you think we answer the questions which cannot be tested with an experiment?
    10·2 answers
  • Four seasons is a characteristic of the _____.
    5·1 answer
  • Which of the following is formed when a barium atom achieves an octet?
    9·1 answer
  • I hate chemistry but someone help please, no links or you’ll be reported
    7·1 answer
  • Help Pls pls I will give brainlist
    13·2 answers
  • Consider 3.01*10^24 molecules of oxygen (atomic mass is 16.0 g/mole) in a container at a temperature of 22.0 degrees celsius. If
    11·1 answer
  • Characteristic ions of water: OH- and H3O+​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!