1. Se prepara una solución con 20 g de soluto y 400 ml de etanol (densidad= 0,8 g/ml). a. Indicar su concentración en %m/m y gst/100 gsv.

b. Si la masa molar del soluto es 80 g/mol, ¿cuál es la concentración molal de la solución?

PORFA AYUSA MANDEN PROCEDIMIENTO TAMBIEN

Explanation:

id - 8253381513

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out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.