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1 year ago

A molecular substance AB2 where A is a group 14 element and B is a group 16 element

Chemistry

1 answer:

Romashka [77]1 year ago

6 0

The compound AB₂ is a covalent compound.

<h3>What is the nature of the molecular substance AB₂?</h3>

The nature of a substance depends on the component elements and the nature of the bonds present in the substance.

Substances can be ionic in nature if ionic bonds are present in the compound or covalent in nature if covalent bonds are present.

The substance AB₂ is composed of the elements A and B where A is a group 14 element and B is a group 16 element.

Group 14 elements are usually non-metals or semi-metals.

Group 16 elements are non-metals.

The bond between A and B will be covalent. Therefore, the compound AB₂ is a covalent compound.

Learn more about covalent compounds at: brainly.com/question/11651796

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Complete the chart. (Remember to enter a "0" if necessary.)

antoniya [11.8K]

Just remember how many electrons can each sublevel hold.

S=2
P=6
D=10

Since we have 10 for atomic number, we can assume we have 10 electrons

1S2
2S2
2P6
The rest have zero because we already have 10 (2+2+6=10)

3 0

3 years ago

Read 2 more answers

Rank these compounds by highest boiling point to lowest boiling point? Pentane, neopentane, isopentane

PilotLPTM [1.2K]

Pentane has a boiling point of 36.1 C, while isopentane boils at 27.7C. Neopentane has the lowest boiling point at 9.5 C. Therefore from highest to lowest boiling points, it is pentane, isopentane, and neopentane.

4 0

4 years ago

Un globo lleno de helio tenia un volumen de 8.5 L en el suelo a 20°C y a una presión de 750 torr. Cuando se le soltó, el globo s

Ray Of Light [21]

Answer:

El volumen del gas era 12.95 L

Explanation:

Se relaciona la presión y el volumen mediante la ley de Boyle, que dice:

“El volumen ocupado por una determinada masa gaseosa a temperatura constante, es inversamente proporcional a la presión”

La ley de Boyle se expresa matemáticamente como: P*V=k

Por otro lado, la Ley de Charles consiste en la relación que existe entre el volumen y la temperatura absoluta de una cierta cantidad de gas ideal, el cual se mantiene a una presión constante. Esta ley dice que cuando la cantidad de gas y de presión se mantienen constantes, el cociente que existe entre el volumen y la temperatura siempre tendrán el mismo valor:

$\frac{V}{T}=k$

Por último, la Ley de Gay Lussac dice que la temperatura absoluta y la presión son directamente proporcionales. Es decir, cuando se mantiene todo lo demás constante, mientras suba la temperatura de un gas subirá también su presión. Y mientras la temperatura del gas baje, lo mismo ocurrirá con la presión:

$\frac{P}{T}=k$

Combinado las mencionadas tres leyes se obtiene:

$\frac{P*V}{T} =k$

Cuando se desean estudiar dos diferentes estados, uno inicial y una final de un gas, se puede aplicar:

$\frac{P1*V1}{T1} =\frac{P2*V2}{T2}$

Recordando que la temperatura debe usarse en grados Kelvin, conoces los siguientes datos:

P1: 750 torr
V1: 8.5 L
T1: 20°C= 293°K (siendo 0°C=273°K)
P2: 425 torr
V2: ?
T2: -20°C= 253 °K

Reemplazando:

$\frac{750 torr*8.5 L}{293K} =\frac{425 torr*V2}{253 K}$

Resolviendo:

$V2=\frac{750 torr*8.5 L}{293K} *\frac{253 K}{425 torr}$

V2= 12.95 L

El volumen del gas era 12.95 L

5 0

3 years ago

An acid with the general formula RCOOH is used to make a 0.10 M solution in water. The pH of this acid solution is measured as 3

Sati [7]

Answer:

0.159 \%

Explanation:

The acid will dissociate according to the reaction shown below:-

$RCOOH + H_2O\rightleftharpoons RCOO^- + H_3O^+$

Given that, pH=3.8

The concentration of can be determined from the expression fo pH as:-

pH = - log $[H^+]$

3.8 = - log $[H^+]$

$[H^+]$ = $1.59\times 10^{-4}\ M$

The initial concentration of RCOOH was 0.10 M, then the percent dissociation was- calculated as shown below:-

$\% \ dissociation=\frac{1.59\times 10^{-4}}{0.10}\times 100=0.159\ \%$

3 0

3 years ago

In the biosynthetic pathway for folic acid, the compound PABA is the normal substrate for an enzyme in the pathway. The antibiot

ValentinkaMS [17]

Answer:

Inhibitor

Explanation:

Enzyme inhibitors are compounds that can interact with the enzyme but don't trigger any biological response. This is what sulfanilamide does. When the enzyme is bound to sulfanilamide, it stops being able to bind PABA, its normal substrate, and so it cannot perform its biological action. In consequence, the entire biosynthetic pathway for folic acid is stopped.

4 0

3 years ago