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Flura [38]
4 years ago
13

If cobalt metal is mixed with excess sulfur and heated strongly, a sulfide is

Chemistry
1 answer:
Naddik [55]4 years ago
8 0

Answer:

Co2S3.

Explanation:

% of sulphur =  44.94 %

Dividing by the atomic masses:

Co = 55.06 / 58.93 = 0.9343

S = 44.94 / 32.078 = 1.4010

Working out the ratio of Co to S:

1:1.5

= 2:3.

So the empirical formula is Co2S3.

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Conociendo el volumen de la solución y la masa del soluto y su masa molar, ¿qué concentración es posible determinar
NISA [10]

Answer:

Conociendo el volumen de solución, masa de soluto y su masa molar, es posible determinar: B) Concentración molar

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M = No moles de solución de soluto / volumen (L)

Y a su vez los moles de soluto se encuentran por:

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3 years ago
the double bond in ethene is made up of a pi bond and a sigma bond formed by lateral overlap of two p orbitals
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The unhybridized pz orbitals on each carbon overlap to a π bond (pi).The sigma bond framework of the ethylene molecule is produced by the overlap of hybrid orbitals or by the interaction of a hybrid orbital and a 1s hydrogen orbital.

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3 0
2 years ago
Describe the capillary action in acetone compared to water
lakkis [162]
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Read 2 more answers
8. Which gas contributes the largest part of air? *
timurjin [86]

Answer:

Nitrogen

Explanation:

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