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Scilla [17]
3 years ago
9

Which statement about atmospheric pressure is false?

Chemistry
2 answers:
Tcecarenko [31]3 years ago
7 0

Answer:

The false statement is "With an increase in altitude, atmospheric pressure increases as well" because "With an increase in altitude, atmospheric pressure decreases."

Explanation:

Altitude is the vertical distance that exists between any given point on Earth and sea level.

The weight of the air that makes up our atmosphere puts pressure on the earth's surface. This pressure is known as atmospheric pressure. Generally, the more air there is over an area, the higher the atmospheric pressure. This means that atmospheric pressure changes with altitude: the higher the height of the Earth's surface with respect to sea level (altitude), the lower the air pressure.

So, <u><em>the false statement is "With an increase in altitude, atmospheric pressure increases as well" because "With an increase in altitude, atmospheric pressure decreases."</em></u>

Vinil7 [7]3 years ago
6 0

Answer:

D) With an increase in altitude, atmospheric pressure increases as well.

Explanation:

Generally when altitude increases, the value of pressure decreases. This shows that pressure is inversely proportional to altitude. For example, the higher the altitude, the lower the pressure and vice versa. At very high altitude, the number of molecules of air are smaller than the number of moles of air at very low altitude. Thus, the higher the altitude, the lower the atmospheric pressure and the lower the altitude, the higher the atmospheric pressure. Therefore, option (D) is false.

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The mole fraction of iodine, i2, dissolved in dichloromethane, ch2cl2, is 0.115. what is the molal concentration, m, of iodine i
german
The molality of a solute is equal to the moles of solute per kg of solvent. We are given the mole fraction of I₂ in CH₂Cl₂ is <em>X</em> = 0.115. If we can an arbitrary sample of 1 mole of solution, we will have:

0.115 mol I₂

1 - 0.115 = 0.885 mol CH₂Cl₂

We need moles of solute, which we have, and must convert our moles of solvent to kg:

0.885 mol x 84.93 g/mol = 75.2 g CH₂Cl₂ x 1 kg/1000g = 0.0752 kg CH₂Cl₂

We can now calculate the molality:

m = 0.115 mol I₂/0.0752 kg CH₂Cl₂
m = 1.53 mol I₂/kg CH₂Cl₂

The molality of the iodine solution is 1.53.
5 0
3 years ago
What makes atoms electrically neutral?
Sophie [7]
The atom has equal amount of Protons and electrons it is Neutral
4 0
3 years ago
Molecules are large atoms true or false
Naddik [55]

Answer:

False

Explanation:

Molecules are not more sizable atoms than the average atom. Molecules are compunds of two different symbolic elements, when you combine then you get a molecule. The answer to your question is false because if they were larger molecules, they would be in object around us but molecules are not in all objects around us.

7 0
3 years ago
Cuántos mililitros de agua hay en 3 litros de una botella de naranjas y las solucion tiene una concentracion de 20% v/v
sertanlavr [38]

Respuesta:

2400 mL

Explicación:

Paso 1: Información dada

  • Volumen de solución: 3 L (3000 mL)
  • Concentración de naranja: 20 % v/v

Paso 2: Calcular el volumen de naranja

La concentración de naranja es de 20 % v/v, es decir, cada 100 mL de solución hay 20 mL de naranja.

3000 mL Sol × 20 mL Naranja/100 mL Solución = 600 mL Naranja

Paso 3: Calcular el volumn de agua

El volumen de soluciónes igual a la suma de los volúmenes de naranja y agua.

VSolución = VNaranja + VAgua

VAgua = VSolución - VNaranja

VAgua = 3000 mL - 600 mL = 2400 mL

8 0
3 years ago
What areas of the work force can science be applied to?
Scorpion4ik [409]
Well definitely a scientist  
4 0
3 years ago
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