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Inessa [10]
4 years ago
7

How many paired electrons are in the lewis structure of lithium nitride?

Chemistry
1 answer:
VladimirAG [237]4 years ago
6 0
There are 8 paired electrons in...
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The number of particles in one mole of a substance is:
spayn [35]
Avogadros number is the answer
3 0
4 years ago
If a 3.7851 bottle were filled with NaCl .how many atoms would be in the bottle.p bleach 1.⁰90g/mol
CaHeK987 [17]

Answer:

8.7961 mol

Explanation:

6 0
3 years ago
An aqueous solution 10 g of an optically pure substance diluted to 500ml with water and placed in a polarimeter tube 20 cm long.
Gennadij [26K]

Explanation:

Formula to calculate specific rotation is as follows.

        Specific rotation ([\alpha]) = \frac{\alpha}{c} \times l

where,    \alpha = observed rotation

                   c = concentration in g/ml

                   l = path length in dm

It is given that,

             \alpha = -6.16^{o}    

               c = \frac{10 g}{500 ml} = 0.02 g/ml

              l = 20 cm = 2 dm   (as 1 dm = 10 cm)

Therefore, calculate the specific rotation as follows.

      Specific rotation ([\alpha]) = \frac{\alpha}{c} \times l

                        = \frac{-6.16^{o}}{0.02 g/ml} \times 2 dm

                        = -616^{o}

Thus, we can conclude that the specific rotation of this compound is -616^{o}.

7 0
3 years ago
When you standardized the Na2S2O3, what molarity of Na2S2O3 did you obtain?
nikdorinn [45]

Answer:

0.46M NaS₂O₃ (Assuming KIO₃ solution with a concentration of 1.0M)

Explanation:

Based on the reaction:

6 Na₂S₂O₃ + KIO₃ + 5 KI + 3 H₂SO₄ → 3 Na₂S₄O₆ + 3 H₂O + 3 K₂SO₄ + 6 NaI

<em>6 moles of  Na₂S₂O₃ react per mole of KIO₃</em>

Assuming the molarity of the KIO₃ solution is 0,1M:

Moles of KIO₃: = 5.0x10⁻³L ₓ (0.1 mol / L) = <em>5.0x10⁻⁴ moles</em>

As 6 moles of thiosulfate reacted per mole of iodate:

5.0x10⁻⁴ moles KIO₃ ₓ (6 moles Na₂S₂O₃ /  1 mole KIO₃) =

<em>3.0x10⁻³ moles of Na₂S₂O₃. </em>In 6.5mL (6.5x10⁻³L):

3.0x10⁻³moles Na₂S₂O₃ / 6.5x10⁻³ L = 0.46M NaS₂O₃

6 0
3 years ago
If I mixed milk and vinegar together would it be a chemical or physical change?
IrinaVladis [17]

Answer:

A chemical change

Explanation:

3 0
3 years ago
Read 2 more answers
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