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sdas [7]
3 years ago
9

The crystallization of salt from evaporating seawater a. is an example of precipitation from a solution. b. is, in mineralogic t

erms, formation of a silicate mineral. c. results in hexagonal, prismatic crystals. d. takes place when the solution becomes undersaturated.
Chemistry
1 answer:
Ad libitum [116K]3 years ago
3 0

Answer:

is an example of precipitation from a solution.

Explanation:

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Which option is an example of a chemical property? Question options: reactivity color melting point density
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Scientists in a lab are working with two different samples of the element mercury. They know that the different samples are diff
NeTakaya

Answer:

the mass number

Explanation:

Isotopes are numerous forms of one single element. In simple terms, atomic weights are different for the isotopes. Isotopes refer to the atoms that have the same number of protons but different neutron numbers. The physical properties of the isotopes vary because these properties also based on mass. These variations can be used to distinguish isotopes of an element from each other by applying methods such as fractional distillation and diffusion.

4 0
3 years ago
EL hidroxido de sodio reacciona con el sulfato de hierro (II) para formar sulfato de sdio e hidroxido ferroso. Si se hace reacci
Oduvanchick [21]

Answer:

280.8 g

Explanation:

Definimos la reaccion:

2NaOH +  FeSO₄  →  Na₂SO₄  +  Fe(OH)₂

Como tenemos la masa de NaOH, asumimos que el sulfato de hierro (II) es el reactivo en exceso.

Definimos masa de reactivo: 250 g . 1mol / 40g = 6.25 mol

2 moles de NaOH producen 1 mol de hidroxido ferroso

Entonces 6.25 moles producirán, la mitad (6.25  . 1) /2 = 3.125 moles

Convertimos los moles a masa:

3.125 mol . 89.85 g/mol = 280.8 g

7 0
3 years ago
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