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4 years ago

Carbon sometimes forms tetrahedral shaped molecular structures. Which property of carbon BEST explains this?

Chemistry

2 answers:

olasank [31]4 years ago

7 0

A tetrahedral shaped molecule involves a central atom (in this case carbon) covelantly bonded with four other atoms with out any lone pars. Since carbon has four unpaired valence electrons, it would make sense that it can form 4 bonds with other atoms. All of the other choices don't really directly<span> affect the type of bonds that can be formed</span>. A common example of a tetrahedral structure is CH₄.

rusak2 [61]4 years ago

4 0

Answer: B. Carbon's four valence electrons.

Explanation: Tetrahedral shaped structure is the structure in which central metal atom is bonded to 4 other atoms out of which 2 or in the plane of the paper and one is above the plane and other one is below the plane of the paper.

Thus carbon atom can form 4 bonds and shaped itself into tetrahedral structure as shown below -

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Consider HA2, the intermediate form of a diprotic acid. Ka for this species is 1024 and Kb is 1028 . Nonetheless, the Ka and Kb

Triss [41]

Answer:

1. naoh + h₂o → na⁺ + oh⁻ + h₂o + heat

2. naoh + hcl → nacl + h₂o

explanation:

1. the dissolving of naoh in water is an exothermic reaction resulting a heat. it also causes the dissociation of naoh to its ions (na⁺ and oh⁻).

so, the balanced equation will be naoh + h₂o → na⁺ + oh⁻ + h₂o + heat.

2. the reaction between acid and base resulting salt and water. it is considered as a neutralization reaction.

the reaction between hcl and naoh will give sodium chloride and water and the balanced equation will be naoh + hcl → nacl + h₂o.

Explanation:

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4 years ago

Choose the compound that exhibits hydrogen bonding as its strongest intermolecular force.

NemiM [27]

Answer:

Explanation:

To form hydrogen bondings between the molecules, the compound needs a highly electronegative atom (usually N, O, or F) bonded with a hydrogen atom;

and that the highly electronegative atom has lone pair outermost shell electrons.

In the 5 options, only B (CH3OH) has an N, O, or F atom that has lone pair outermost shell electrons (2 lone pairs on each O atom), so it can form hydrogen bonds within its molecules.

Hydrogen bonds are stronger than the van der Waals' forces between its molecules (that exist regardless of whether there are hydrogen bonds).

4 0

3 years ago

!!PLEASE ANSWER!! 24 PTS!!

Thepotemich [5.8K]

1.magnesium

2.magnesium

6 0

4 years ago

How many moles in 16.012 g

olga_2 [115]

If you want you can repost this question with a picture but I need to see it in order to help you , or you can read the picture I added for you

5 0

3 years ago

A tank at is filled with of dinitrogen monoxide gas and of boron trifluoride gas. You can assume both gases behave as ideal gase

blsea [12.9K]

Answer:

(1). Mole fraction = 0.152 for sulfur tetrafluoride gas.

Mole fraction = 0.848 For dinitrogen monoxide gas.

(2). Partial Pressure for dinitrogen monoxide gas = 187 kPa

Partial Pressure for sulfur tetrafluoride gas = 33.4 kpa.

(3). Total Partial Pressure = 220.4 kpa.

Explanation:

So, we are given the following data or parameters or information in the question above;

• Volume of the tank = 5.00L per tank;

• Temperature of the tank = 7.03°C;

• The mass of the content in the tank =

17.7g of dinitrogen monoxide gas and

7.77g of sulfur tetrafluoride gas.

So, we will be making use of the formulae below to calculate the MOLE FRACTION:

Moles, n= mass/molar mass and mole fraction = n(1)/ n(1) + n(2) per each constituents.

Moles, n1 = 17.7g of dinitrogen monoxide gas/ 44 grams per mole. =0.4023 moles.

Moles, n2 = 7.77g of sulfur tetrafluoride gas/ 108.1 grams per mole. = 0.07188 moles.

Total numbers of moles = n1 + n2 = 0.47415 moles

Mole fraction =0.4023 / 0.47415 = 0.848 of dinitrogen monoxide gas.

Mole fraction = 0.07188/0.47415 = 0.152 of sulfur tetrafluoride gas.

PART TWO: CALCULATE THE PARTIAL PRESSURE AND TOTAL PRESSURE BY USING THE FORMULA BELOW;

pressure × volume = number of moles × gas constant, R × temperature.

Pressure = n × R × T/ V.

For dinitrogen monoxide gas. ;

Partial Pressure = 0.4023 × 8.314 × 280.03 / 5 × 10^-3 = 187 kPa.

For sulfur tetrafluoride gas

Partial Pressure = 0.07188 × 8.314 ( × 280.03 / 5 × 10^-3. = 33.4 kpa.

(3). Total pressure = (187 + 33.4)kpa = 220.4 kpa

6 0

3 years ago