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sveta [45]
3 years ago
13

To describe the length of a classroom, a student should use

Chemistry
2 answers:
Kamila [148]3 years ago
8 0
The answer is D).....
steposvetlana [31]3 years ago
7 0

The answer is d because you are measuring a classroom

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For a stationary fluid, the pressure will vary in the x, y and z directions.T/F
solmaris [256]

Answer:

True

Explanation:

For a stationary fluid, the pressure will vary in the x, y and z directions.

5 0
3 years ago
Read 2 more answers
What is the Lewis dot diagram structure for PI2F
Brut [27]

Answer:

Please find attached the completed Lewis dot diagram structure for PI₂F

Explanation:

The number of valence electrons are;

Phosphorus = 5 Electrons

Iodine = 2 × 7 electrons = 14 electrons

Chlorine = 7 electrons

The total number of valence electrons = 14 + 7 + 5 = 26 electrons

2) We draw the symbol that represents the basic (general) structure of the molecule as follows;

The sheared electron pair are represented by single bond lines

3) We complete the octet structures round the fluorine and the iodine atoms as attached showing 18 electrons plus 6 shared electron pairs, with a maximum from step 2 to give a total of (18 + 6) 24 electron pairs

4) We add the 2 unaccounted valence electron on the phosphorus atom to give it the stable octet structure, which gives the completed Lewis structure

3 0
3 years ago
How many moles of Al will be consumed when 0.400 mol of Al2O3 are produced in
Vladimir [108]

Answer:

C) 0.800 mol

Explanation:

  • 4Al + 3O₂ → 2Al₂O₃

In order to <u>convert from moles of Al₂O₃ into moles of Al</u>, we'll need to use<em> the stoichiometric coefficients</em>, using a conversion factor that has Al₂O₃ moles in the denominator and Al moles in the numerator:

  • 0.400 mol Al₂O₃ * \frac{4molAl}{2molAl_2O_3} = 0.800 mol Al

So the correct answer is option C).

7 0
2 years ago
_ an electron moved around the nucleus in circular paths​
kifflom [539]

Answer: although it is convenient to think of the electron moving around the nucleus along circular paths

Explanation:

7 0
3 years ago
Is mixing sodium and water a physical or a chemical change
adoni [48]

Answer:

physical

Explanation:

3 0
3 years ago
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