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marysya [2.9K]
3 years ago
6

25

Chemistry
1 answer:
d1i1m1o1n [39]3 years ago
8 0
25: A) <span>Plants make glucose and oxygen by taking in carbon dioxide and water. </span>
26: D) In a vacuum
27: B) <span>A large man (1000 newtons is approximately 224 lbs of force)</span>
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plz help me asap (plz don't give me helpless answer plz and ty) and also ill give brainist to the person that work hard
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Question? I don’t see anything
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2 years ago
Durante una determinación de acidez en una muestra contaminada, agregas como indicador fenolftaleina y torno a violeta. ¿Qué sus
algol13

Answer:

HCl, ya que la sustancia es una base que se debe titular con un ácido.

Explanation:

¡Hola!

En este caso, teniendo en cuenta la descripción inicial de la sustancia, la cual se torna violeta cuando se le agrega la fenolftaleína, es posible inderir que esta sustancia es una base con pH básico. Ahora bien, en torno a la especificación de un proceso de titulación, es claro que dicha base debe ser titulada con un ácido, y este caso, con HCl, ácido chlorhídrico, con el fin the alcanzar el punto de equivalencia.

¡Saludos!

6 0
3 years ago
Which method involves separating a solution by liquids moving across a selectively permeable membrane?
Kisachek [45]

Answer:

OSMOSIS

Explanation:

Osmosis (/ɒzˈmoʊ.sɪs/) is the spontaneous net movement or diffusion of solvent molecules through a selectively permeable membrane from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration),

7 0
3 years ago
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What type of a reaction occurs when potassium metal reacts with fluorine gas?
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Exothermic Synthesis

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3 years ago
How many molecules are in 2.00 moles of h2o
Sedaia [141]
1 mole = 6.022×10^23 atoms. 1 water molecule = 2 Hydrogen atoms + 1 oxygen atom. So, 1 mole H2O = 1.2044×10^24 hydrogen atoms. Therefore 2 mole H2O will have 2.4088×10^24 hydrogen atoms.
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3 years ago
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