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
Misha Larkins [42]
3 years ago
13

Help with number 20-22 please

Chemistry
1 answer:
SSSSS [86.1K]3 years ago
4 0
18. c
19. A
20. decomposition reaction 
21. 4 
22. 0.04%

You might be interested in
A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is
Airida [17]

Answer:

the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C  

Explanation:

Given the data in the question;

First we calculate the Volume of the steel cylinder;

V = πr²h

radius r = Diameter / 2 = 27 cm / 2 = 13.5 cm

height h = 32.4 cm

so we substitute

V = π × ( 13.5 cm )² × 32.4 cm

V  = π × 182.25 cm × 32.4 cm

V = 18550.79 cm³  

V = 18.551 L

given that; maximum safe pressure P = 3.10 MPa = 30.5946 atm

vessel contains 0.218kg or 218 gram of carbon monoxide gas

molar mass of carbon monoxide gas is 28.010 g/mol

so

moles of carbon monoxide gas n = 218 gram /  28.010 g/mol = 7.7829 mol

we know that;

PV = nRT

solve for T

T = PV / nR

we know that gas constant R = 0.0820574 L•atm•mol⁻¹ K⁻¹

so we substitute

T = ( 30.5946 × 18.551 ) / ( 7.7829 × 0.082 )

T = 567.5604 / 0.6381978

T = 889.317387 K

T = ( 889.317387 - 273.15 ) °C

T = 616.167 ≈ 616 °C  { 3 significant digits }

Therefore, the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C  

6 0
3 years ago
In which group do all atoms have two valence electrons in the ground state?
Nitella [24]
<span>Alkaline Earths hope this helps

</span>
5 0
3 years ago
What is the difference between Electron Geometry and Molecular Geometry?
miskamm [114]

Answer:

Electron Geometry describes arrangement is electron groups & Molecular Geometry describes the arrangement of atoms

Explanation:

The picture above better explains it, hopefully this helps :)

8 0
3 years ago
A. property is a characteristic of a pure substance that can be observed without changing the substance into some thing else
wlad13 [49]
The answer is physical property.

Physical properties are the properties that does not require the substance changing into another substance, which is, chemical change. Physical properties are usually observable and measurable, such as melting points, density, odor, color etc. These does not require a chemical reaction to happen.

The opposite of physical property is chemical property, which is how the substance changes to another. Such as how sodium reacts with water to make sodium hydroxide and hydrogen.
7 0
3 years ago
Isº2s2p 3sº3p®45*3d"4p^5s*4d"5p<br> 6s4f5d"6p
solniwko [45]

Answer:

gibberish

Explanation:

its literaly nothing _#_$&_θГ[§θμθ_(;!&#\=&.·&:ГГ:¬¬&μ!¬´€

4 0
3 years ago
Other questions:
  • The amount of matter in an object is called its
    11·2 answers
  • Which of these elements would have the lowest first ionization energy?
    15·1 answer
  • What is the most precise measurement this beaker can give?
    6·1 answer
  • Mass Number = 11
    8·2 answers
  • An organism that contains chloroplasts is able to produce food by the process of
    8·1 answer
  • One isotope of carbon (C) has exactly the same mass number and atomic mass since it was used as the definition of the atomic mas
    6·1 answer
  • Why does H2 is form more quickly than Cl2?
    11·1 answer
  • What is hydrolisation
    13·1 answer
  • The location of the water table is subject to change.
    5·1 answer
  • What is the purpose of the scientific method?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!