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Paraphin [41]
3 years ago
12

Determina la masa molar y el volumen que ocupa la siguiente sustancia CO2, si su masa es de 28 gr. *

Mathematics
1 answer:
balandron [24]3 years ago
7 0

Answer:

Para el CO₂ sabemos que:

densidad = 0,001976 g/cm³

Sabemos que:

densidad = masa/volumen

Entonces, si tenemos una masa de 28 g, podemos escribir:

volumen = masa/densidad

volumen = (28g)/(0,001976 g/cm³) = 14,170 cm^3

Para obtener la masa molar (es decir, la masa de un mol de esta sustancia) simplemente sumamos la masa de un mol de cada componente.

Carbono: tiene una masa molar de 12 g/mol

Oxígeno: tiene una masa molar de 16 g/mol (y tenemos dos oxígenos)

entonces la masa molar va a ser:

masa molar = 12g/mol + 2*16g/mol = 44 g/mol

Es decir, un mol de CO₂, pesa 44 gramos.

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A. x ≤ -\frac{19}{13}

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3 years ago
A pole that is 2.6 m tall casts a shadow that is 1.38 m long. At the same time, a nearby building casts a shadow that is 40.75 m
Lana71 [14]

Step-by-step explanation:

Wyzant

PREALGEBRA

Melanie L. asked • 03/08/16

a pole that is 3.3m tall casts a shadow that is 1.78m long. at the same time, a nearby building casts a shoadow that is 49.75 m long. how tall is the building?

a pole that is 3.3m tall casts a shadow that is 1.78m long. at the same time, a nearby building casts a shoadow that is 49.75 m long. how tall is the building? Round to the nearest meter.

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2 Answers By Expert Tutors

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Jane C. answered • 03/08/16

TUTOR New to Wyzant

Proficient, Efficient, Sincere Elementary and Middle School Math Tutor

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Hi Melanie!

This problem involves proportion.

Let x be the unknown, which is the height of the building.

height of pole = height of the building

height of the shadow height of the shadow

3.3 m = x

1.78 m 49. 75 m

Solve for x.

(3.3 m) (49.75 m) = x

1.78 m

92.2331460674 = x

Rounded to the nearest meter, the building is 92 meters high.

Hope that helps.

The fraction bars are not coming out (Underline), I don't know why... but yeah, that is the answer.

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3 years ago
Can someone help me with this?
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Use inverse to solve this problem. Tan-1(5/27). =10.491 which rounded to the nearest degree equals 11.
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3 years ago
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X/4+ 2 = 6 need answer ASAP
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Answer:

16=x becuase 16/4 also =4 and 4+2=6 may  i have brainliest plzz

Step-by-step explanation:

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3 years ago
-0.6 into a fraction
Akimi4 [234]
The fraction would be - 3/5
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2 years ago
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