Calculate the missing variable M1 = 0.5 M V1 = ? M2 = 1.2 M V2 = 3L

Which element will have a noble gas configuration if it forms an ionic bond by donating one electron to a fluorine atom?

Tresset [83]

Potassium (K) having 9 valance electrons can donate a single electron to Fluorine and reach the noble state by completing the Octet.

Option D

<u>Explanation:</u>

Octet Rule:

When the atoms of an element hold 8 independent valance electrons in their outermost orbit; the element converts into its noble state where it doesn't need to react or combine to any other element and gets stable. Each element tend to reach such state by either donating or receiving electrons to satisfy the Octet rule.

Here in this case, we can see that its Potassium which can donate a single electron to Fluorine as it has 19 electrons in each of its atoms. If we see its electronic configuration, we will know that the electrons are divided in three orbits having 2, 8 and 9 electrons, respectively.

Now, if a Potassium atom leaves one of its valence electrons out of 9; the count will be reduced to 8 which will make it stable according to the Octet Rule and hence, it forms a noble gas. Thus, it's Potassium which can donate an electron and gets stable.

7 0

3 years ago

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A rigid canister holds 50.0 L of helium gas at 32.0°C and 49.9 kPa. The gas is cooled until the pressure reaches 14.2 kPa. What

xeze [42]

Answer:-

86.794 K

Explanation:-

Initial temperature T 1 = 32 C + 273 = 305 K

Initial Pressure P 1 = 49.9 KPa

New Pressure P 2 = 14.2 KPa

The Volume remains same since it is rigid.

∴V 1 = V 2 = 50.0 L

Using the relation

P 1 V 1 / T1 = P 2 V 2 / T 2

New temperature T 2 = P 2 V 2 T 1 / ( P 1 V 1)

= 14.2 KPa x 50.0 L x 305 K / ( 49.9 KPa x 50.0 L)

= 86.794 K

8 0

4 years ago

A widow's peak is a V-shaped area of the hairline in the center of the forehead. The allele for having a widow's peak is dominan

Flauer [41]

<span>None. Since it is dominant, both would have to show it to pass in on.</span>

8 0

3 years ago

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g Hydrogen iodide, HI, decomposes at moderate temperatures according to the equation The amount of I2 in the reaction mixture ca

atroni [7]

Answer:

Equilibrium constant, Kc = 0.023

Explanation:

Equation for the decomposition of Hydrogen iodide is given below:

2HI ----> H₂ + I₂

Initially, the number of moles of the reactant and the products are given as follows:

n(HI) = 2 * 3.800 moles = 7.600 moles

nH₂) = 0.000 moles

n(I₂) = 0.000 moles

At equilibrium, the equation becomes: 2HI <----> H₂ + I₂

Number of moles of the reactant and the products are given as follows:

n(HI) = 7.600 - (0.886 + 0.886) moles = 5.828 moles

nH₂) = 2 * 0.443 = 0.886 moles

n(I₂) = 2 * 0.443 = 0.886 moles

Equilibrium constant, Kc = [H₂] [I₂] / [HI]²

Equilibrium constant, Kc = (0.886) * (0.886) / (5.828)²

Equilibrium constant, Kc = 0.023

5 0

3 years ago

) Consider the starting materials and reagents. What do you expect to happen at the beginning of this reaction (Boxes 1-3 on the

tekilochka [14]

Answer:

Check the explanation

Explanation:

functional group found in the major organic product = alpha -beta unsaturated ketone

Reaction used to form this functional group = Michael condensation reaction

Also other reactions are - Aldol condensation , Robinson annulation reaction.

Kindly check the attached image below to see the step by step solution to the question above.

3 0

3 years ago