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EleoNora [17]
3 years ago
5

A substance has a volume of 10.0 cm3 and a mass of 89 grams. What is its density?

Chemistry
2 answers:
AlladinOne [14]3 years ago
4 0
8.9 g/cm3 since density equals mass/volume or m/v you just divide 89 by 10 to get 8.9
denis23 [38]3 years ago
4 0

Answer:

Density of the substance = 8.9 g/cm³

Explanation:

The volume of the substance = 10 cm³  

Mass = 89 gm

Density = mass / volume = 89 gm / 10 cm³ = 8.9 g/cm³

 

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6. Cuando se oxidan en el aire 12,120 g de vapor de Zinc se obtienen 15,084 g del óxido. ¿Cuál es la fórmula empírica del óxido?
Eddi Din [679]

Answer:

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m Zn = 12.120 Kg

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1. calcular la masa de cinc en gramos

g = 12,120 Kg x 1000 = 12120 g de cinc

g = 15.084 Kg x 100 = 15084 g de oxígeno

2.  calcular gramos de Oxigeno

g O = 15084 g - 12120 g = 2964 g O2

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%m/m ( m soluto / m solc.) x 100

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% m/m (Zn) = 80.35 % = 80.35 g

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% m/m (Zn) = 19.65 %  = 19.65 g

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O: 19.65 g / 16 g/mol = 1.228 mol

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Zn: 1.228 mol / 1.228 mol = 1

O: 1.228 mol / 1.228 mol = 1

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If you need to reverse the following reaction in order for it to be an intermediate reaction in a Hess's law problem, what would
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