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
andrew11 [14]
2 years ago
15

Calculate the activation energy for vacancy formation in Al given that the equilibrium number of vacancies at a temperature of 7

73 K is 7.57 X 1023 m-3 . The atomic weight and density of Al are, respectively, 26.98 g/mol and 2.62 g/cc.
Chemistry
1 answer:
Ainat [17]2 years ago
8 0

Answer:

Explanation:

Thx

You might be interested in
How many valance electrons does group #11 have?
galina1969 [7]

It would have 11 valance electrons.

Example/Explanation:

Say we are talking about groups 10. Group 10 would have 10 valance electrons because of the atom's electronic arrangement in the periodic table.

6 0
3 years ago
Three clues that indicate chemical change <br>​
Bad White [126]

Explanation:

temperature

taste

and acidity rate

4 0
2 years ago
Read 2 more answers
What is the balanced equation for the combustion of magnesium?
Lostsunrise [7]

Answer:

2Mg  +  O2 →  2MgO

Explanation:

In all conbustion you should know, that reactans are an specific compound and O2, so the products must be CO2 and H2O, or in this case, the corresponding oxide.

6 0
3 years ago
In physical change the make up of matter is changedWho or false
Harrizon [31]

Answer:

False

That is a chemical change

4 0
3 years ago
Read 2 more answers
Construct a simulated 1H NMR spectrum, including proton integrations, for CH3OC(CH2OCH3)3 (see Hint). Drag the appropriate split
CaHeK987 [17]

Answer:

The drawing of the structure is found in diagram 1 of the attached figure.

Explanation:

Diagram 1 shows that three different types of protons are found in the structure. The nine hydrogen atoms have a similar behavior, the six hydrogen atoms also have a similar behavior and finally, the three hydrogen atoms adjacent to oxygen have a similar behavior. The number of peaks are as follows:

9H = singlet peak = between 3 and 4 ppm

6H = singlet peak = 4 ppm

3H = singlet peak = 3 ppm.

The 9 protons are around 3.5 ppm and the 6 hydrogen atoms show a peak at 4 ppm, and finally, the 3 protons have a peak around 3 ppm. Therefore, the corresponding drawing can be seen in diagram 2.

4 0
3 years ago
Other questions:
  • What is the chemical formula for iron (III) bicarbonate?
    12·1 answer
  • For each solution, determine the p-values for each ion indicated. A solution that is 0.493 M in NaCl and 0.314 M in NH 4 Cl .
    6·1 answer
  • How do we turn petroleum into energy we use?
    13·1 answer
  • When earth is closest to the sun, the northern hemisphere is in winter, why is this true?
    11·1 answer
  • a balloon has 0.3 moles of air inside and a volume of 7 liters after 0.2 more moles of air were blown into this balloon what is
    5·1 answer
  • A sample of 42 mL of carbon dioxide gas was placed in a piston in order to maintain a constant 101 kPa of pressure.
    7·1 answer
  • The atomic number, or _____ number, is the described as the number of _____ in the nucleus of an chemical element.
    14·1 answer
  • What is the differnce between the atomic number and the mass number of an element?
    9·1 answer
  • A student wants to carry out flame tests on these three chemicals. Describe how to carry out a flame test.
    14·1 answer
  • What are tissues made up of?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!