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
djyliett [7]
3 years ago
9

nguyên tử sắt có điện tích hạt nhân là 26+. trong nguyên tử, số hạt mang điện nhiều hơn số hạt không mang điện là 22. Hãy xác đị

nh số khối của nguyên tử sắt
Chemistry
1 answer:
dimaraw [331]3 years ago
8 0

Answer:

I don't know yr language

You might be interested in
Which of the following are true of phases?Check all that apply.A.The particles in a liquid are in a fixed location.B.Gases have
saw5 [17]

Answer:

The answers are options b , c and d.

Hope this helps.

7 0
3 years ago
What are essential elements in plants?​
madam [21]

Answer:

Chlorophyll is one. I can't quite remember other

5 0
3 years ago
HELLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPPPPP
guajiro [1.7K]
Hiii,so the problem is ‍♀️
5 0
2 years ago
A valid lewis structure of __________ cannot be drawn without violating the octet rule. a valid lewis structure of __________ ca
Oxana [17]
A valid Lewis structure of IF3 cannot be drawn without violating the octet rule.

Answer: IF3 (Iodine Trifluoride)

This is because, I (Iodine) and F (Fluorine) both have odd number of valence electrons (7) which also means that there are too many valence electrons in the valence shell.
5 0
3 years ago
5.6 g of solid CO2 is put in an empty sealed 4.00 L container at a temperature of
tresset_1 [31]

Answer:

0.78 atm

Explanation:

Step 1:

Data obtained from the question. This includes:

Mass of CO2 = 5.6g

Volume (V) = 4L

Temperature (T) =300K

Pressure (P) =?

Step 2:

Determination of the number of mole of CO2.

This is illustrated below:

Mass of CO2 = 5.6g

Molar Mass of CO2 = 12 + (2x16) = 12 + 32 = 44g/mol

Number of mole CO2 =?

Number of mole = Mass/Molar Mass

Number of mole of CO2 = 5.6/44

Number of mole of CO2 = 0.127 mole

Step 3:

Determination of the pressure in the container.

The pressure in the container can be obtained by applying the ideal gas equation as follow:

PV = nRT

The gas constant (R) = 0.082atm.L/Kmol

The number of mole (n) = 0.127 mole

P x 4 = 0.127 x 0.082 x 300

Divide both side by 4

P = (0.127 x 0.082 x 300) /4

P = 0.78 atm

Therefore, the pressure in the container is

3 0
3 years ago
Other questions:
  • The vapour pressure of pure benzene at 20 °C is 75 Torr and that of pure methylbenzene is 25 Torr at the same tempera-ture. In a
    10·1 answer
  • 7.7. A painter leans his back against a painted wall while looking into a 1m long mirror at the opposite end of a rectangular ro
    5·1 answer
  • a sample of sucrose was burned in a calorimeter, and 41,600 joules oh heat energy were released. which statement is true about t
    6·1 answer
  • Which of the following is a noble gas? carbon dioxide, boron, oxygen, and helium
    6·2 answers
  • The limiting reactants appeared to be _______<br><br> Because___________
    12·1 answer
  • Help No links Temperate grasslands are a division of a larger biome grouping of v grasslands that includes Tropical
    8·2 answers
  • which of the following would remain a liquid longest as the temperature continues to drop? propane, octane, hexane, ethane
    9·1 answer
  • Photosynthesis is an example of an __<br> process.
    9·1 answer
  • How much DNA can be extracted from an onion
    11·1 answer
  • What is potential energy?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!