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2 months ago

Which of the following is most likely to form multiple (double or triple) bonds? 1. Li 2. Cl 3. N 4. H 5. F

Chemistry

1 answer:

lions [2.9K]2 months ago

3 0

Answer: The correct choice is (3).

Explanation:

The atomic number for lithium is 3, and its electron configuration is 2, 1. To achieve stability, it will lose one electron, thus forming a single bond.

Chlorine has an atomic number of 17, with 7 electrons in its outer shell. It will gain an electron to reach stability, resulting in the formation of a single bond.

Nitrogen, with an atomic number of 7 and an electron distribution of 2, 5, must acquire 3 electrons to stabilize. Therefore, nitrogen can form both triple and double bonds.

Hydrogen's atomic number is 1, and it stabilizes by gaining one electron, always forming a single bond.

Fluorine has an atomic number of 9 with 2, 7 electron distribution. It needs to gain one more electron to complete its octet, so it also forms a single bond.

Thus, we conclude that among the listed options, nitrogen is most capable of forming multiple (double or triple) bonds.

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What is the specific heat of an unknown metal if 1.67 kcal of energy are required to raise the temperature of 79.2 g sample of t

VMariaS [2998]

Answer:

The solution to your inquiry is C = 0.000333 kcal/g°C

or C = 0.333 cal/g°C

Explanation:

Data

Q = 1.67 kcal

mass = 79.2 g

ΔT = 63.3°C

Formula

Q = mCΔT

Solving for C

C = Q/mΔT

Substituting values

C = 1.67/(79.2 x 63.3)

Simplifying

C = 1.67 / 5013.4

Final Result

C = 0.000333 kcal/g°C

or C = 0.333 cal/g°C

4 0

2 months ago

Read 2 more answers

One type of breathalyzer employs a fuel cell to measure the quantity of alcohol in the breath. When a suspect blows into the bre

Alekssandra [3086]

Response:The ethanol percentage is 0.1093%

Explanation:

As given:

t = time = 10 s

I = current = 320 mA

F = Faraday's constant = 96485.3365 C mol⁻¹

n = number of electrons transferred = 4

Molecular weight of ethanol is 46 g/mol

Question: What is the percent (by volume) of ethanol in the driver's breath, %E =?

First, calculate the ethanol mass:

$W=\frac{\frac{46}{4} *0.32*10}{96485.3365} =3.814x10^{-4} g$

The moles of ethanol:

$n_{ethanol} =3.814x10^{-4} g*\frac{1mol}{46} =8.291x10^{-6} moles$

Applying the ideal gas law formula:

$V=\frac{nRT}{P}$

Here:

T = 26°C = 299 K

P = 1 atm

Substituting in the values:

$V=\frac{8.291x10^{-6}*0.082*299 }{1} =2.033x10^{-4} L=0.2033mL$

The percentage of ethanol:

$E=\frac{0.2033}{186} *100=0.1093$ %

3 0

2 months ago

Find the specific heat of sikver in J/g C if 38.5 cal is required to heat 25.0g of silver from 31.5 C to 58.7 C (1cal=4.184 J)

alisha [2963]

Answer:

The specific heat value for silver is 0.236 J/g-C.

Explanation:

Silver has a mass of 25 grams.

The temperature shifts from 31.5° C to 58.7° C.

The required heat is equivalent to 25 g.

To determine silver's specific heat, the following equation applies:

$Q=mc\Delta T$

Where c represents the specific heat of silver.

$c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{38.5 \times 4.184}{25(58.7-31.5)}\\\\c=0.236\ J/g-C$

Thus, the specific heat of silver is 0.236 J/g-C.

7 0

2 months ago

In KCI how are the valence electrons distributed

eduard [2782]

Answer:

Explanation:

In KCl, the two elements that combine to create KCl are potassium (K) and chlorine (Cl).

Potassium, as a Group 1 element, possesses one valence electron in its outermost shell which it readily donates during bonding. Every element aims to achieve a stable electron configuration, typically with 2 or 8 electrons in its outer shell. Potassium is characterized by its lower electronegativity and higher ionization energy, making it more likely to donate its electron than to accept one. On the other hand, chlorine belongs to Group 17 and has 7 electrons in its outer shell, requiring just one additional electron to complete its octet. Chlorine’s higher electronegativity and lower ionization energy facilitate its tendency to accept an electron rather than donate it.

The bond between potassium and chlorine that results in KCl is termed an electrovalent bond.

Reaction equation:

K + Cl → KCl

3 0

2 months ago