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Roman55 [17]
3 years ago
9

Finalmente responde:

Chemistry
1 answer:
dexar [7]3 years ago
8 0

El agua se purifica a partir de un proceso de filtrado. Las características que evidencian el filtrado incluyen pH normal, color cristalino, ausencia de metales pesados y/o microorganismos, etc.

  • Los filtros para purificar agua son dispositivos que permiten el limpiado del agua con el objetivo de convertirla apta para consumo humano.

  • En general, los filtros para lograr la purificación del agua consisten de carbón activado, el cual se prensa con alta presión.

  • Este dispositivo de carbón activado permite secuestrar las partículas sólidas que pasan a través del filtro, con lo cual el agua sale a través del filtro completamente purificada.

Las características que permiten determinar si el agua ha sido correctamente filtrada incluyen:

  1. El agua sale cristalina, es decir, sin ningún tipo de color que evidencie la presencia de contaminación.
  2. El pH del agua potable debe oscilar entre valores normales (6,5 a 8,5)
  3. No debe contener metales tales como plomo, arsénico o cadmio (altamente tóxicos)
  4. No debe contener microorganismos

Aprende más sobre este tema en:

brainly.com/question/24806243?referrer=searchResults

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In the explosion of a hydrogen-filled balloon, 0.40 g of hydrogen reacted with 3.2 g of oxygen. How many grams of water vapor ar
REY [17]

Answer:

              3.568 g of H₂O

Solution:

The Balance Chemical Equation is as follow,

                                   2 H₂  +  O₂     →      2 H₂O

Step 1: Calculate the Limiting Reagent,

According to Balance equation,

               4.04 g (2 mol) H₂ reacts with  =  32 g (1 mol) of O₂

So,

                   0.40 g of H₂ will react with  =  X g of O₂

Solving for X,

                       X  =  (0.40 g × 32 g) ÷ 4.04 g

                       X  =  3.17 g of O₂

It means 0.4 g of H₂ requires 3.17 g of O₂, while we are provided with 3.2 g of O₂ which is in excess. Therefore, H₂ is the limiting reagent and will control the yield of products.

Step 2: Calculate amount of Water produced,

According to equation,

                4.04 g (2 mol) of H₂ produces  =  36.04 g (2 mol) of H₂O

So,

                        0.40 g of H₂ will produce  =  X moles of H₂O

Solving for X,

                      X  =  (0.40 g × 36.04 mol) ÷ 4.04 g

                      X  =  3.568 g of H₂O

5 0
4 years ago
What changes in our sleep habits as we mature and why?
Yanka [14]
Well, while we change in age, out sleep habits change too.

For instance, when we used to be in our teen age, we used to wake up late. Or, Now that were adults around our 20's we tend to wake up very early. Age tends to change out sleep of ways. Its always good to get at least 7 hours of sleep.

Hoped I answered you question. :)
6 0
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What happens to a reducing agent during a redox reaction?
Nuetrik [128]
Reducing agent is an compound/atom, that loses an electron and is oxidized.

0.........+I.............+II............0
Ca + 2HCl ----> CaCl₂ + H₂

Calcium is oxidized --- it's reducing agent (reductant).
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7 0
3 years ago
when 1 mol of glucose is burned, 2802.5kj of energy is released. calculate rhe quantity of energy released to a person by eating
tester [92]

77.78 kJ of energy is released when 1 mol of glucose is burned, 2802.5 kJ of energy is released.

<h3>What are moles?</h3>

A mole is defined as 6.02214076 ×10^{23} of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Calculate the moles of 5.00g of glucose.

Given mass = 5.00g

The molar mass of glucose = 180.156 g/mol

Moles = \frac{mass}{molar \;mass}

Moles = \frac{5.00g}{180.156 g/mol}

Moles =0.02775372455

The quantity of energy released to a person by eating 5.00g of glucose in a candy.

0.02775372455 x 2802.5 kJ

77.77981305 kJ =77.78 kJ

Hence, 777.78 kJ of energy is released.

Learn more about moles here:

brainly.com/question/8455949

#SPJ1

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The Earth's gravitational force accelerates objects when they fall. It constantly pulls, and the objects constantly speed up.
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