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Katen [24]
3 years ago
14

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SI2. Enter the number of bo

nding electrons followed by the number of nonbonding electrons, separated by a comma, in the dot structure of this molecule.
Chemistry
1 answer:
mariarad [96]3 years ago
7 0

Answer:

4, 16,

Explanation:

SI2 is sulphur diiodide. Sulphur is in group sixteen (six valence electrons) while iodine is in group 17(seven valence electrons).

Since there are two iodine atoms and one sulphur atom, the molecule has twenty valence electrons. Out of these twenty valence electrons, only four are bonding electrons. The other sixteen electrons include the four nonbonding electrons found on sulphur and the twelve non bonding electrons found on the two iodine atoms having six nonbonding electrons each.

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When 18.9 kJ is transferred to a gas sample in a constant volume adiabatic container with a calorimeter constant of 2.22 Kj/K, t
poizon [28]

Answer:

(a) Cgas = 0.125 kJ/k

(b) cgas = 0.25kJ/kg.K

(c) cm(gas) = 0.021kJ/mol.K

Explanation:

18.9 kJ is equal to the sum of the heat absorbed by the gas and the heat absorbed by the calorimeter.

Qcal + Qgas = 18.9 kJ  [1]

We can calculate the heat absorbed using the following expression.

Q = C . ΔT

where,

C is the heat capacity

ΔT is the change in the temperature

<em>(a) What is the heat capacity of the sample?</em>

From [1],

Ccal . ΔT + Cgas . ΔT = 18.9 kJ

(2.22kJ/K) × 8.06 K + Cgas × 8.06 K = 18.9 kJ

Cgas = 0.125 kJ/k

<em>(b) If the sample has a mass of 0.5 kilograms, what is the specific heat capacity of the substance?</em>

We can calculate the specific heat capacity (c) using the following expression:

c=\frac{C}{m} =\frac{0.125kJ/K}{0.5kg} =0.25kJ/kg.K

<em>(c) If the sample is Krypton, what is the molar heat capacity at constant volume of Krypton? The molar mass of Krypton is 83.8 grams/mole.</em>

The molar heat capacity is:

\frac{0.25kJ}{kg.K} .\frac{1kg}{1000g} .\frac{83.8g}{mol} =0.021kJ/mol.K

3 0
3 years ago
What distinguishes a substance from a mixture?
wariber [46]
A mixture consists of numerous substances, whereas a substance does not consist of mixtures, but rather of compounds. Mixtures can be separated physically, while substances cannot.
4 0
4 years ago
The Lithium atom has only two energy levels. The third is empty. Therefore, we can refer to the second energy level of the lithi
Minchanka [31]

Answer:

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B=3

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S=6

F=7

Cl=7

Ne=8

Ar=8

He=8

Explanation:

5 0
3 years ago
Please help me with this question !!!
Art [367]

Density of the vinegar is higher than the density of the oil.

Explanation:

Density of the vinegar is higher than the density of the oil. The consequence of this is that the oil will be the top layer in the pitcher while the vinegar is at the bottom layer in the pitcher.

When mixing oil and vinegar will not produce a mixture because the oil contains non-polar molecules while vinegar is a solution of acetic acid in water and both of them are polar molecules.

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PIT_PIT [208]

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4 0
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