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Natali5045456 [20]
3 years ago
7

A gas in a piston starts out with a volume of 156 mL, a temperature of 28.1oC, and a pressure of 1.12 atm. If it ends with a vol

ume of 312 mL and a temperature of 87.2oC, the new pressure will be?
Chemistry
1 answer:
Korolek [52]3 years ago
3 0

Answer:

idkhfj4 HD y

Explanation:

hwhx iij id enjoyably

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Una muestra de 2,5000 (g) de piedra caliza, se disuelve y se precipita el Calcio como oxalato de Calcio (CaC2O4), este precipita
sergij07 [2.7K]

Answer:

\%Ca=19.378\%

Explanation:

¡Hola!

En este caso, basado en la información dada, es posible conocer la masa de calcio en carbonato de calcio, que de hecho es la misma en la muestra, al utilizar el siguiente esquema de cálculo:

m_{Ca}=1,2093gCaCO_3*\frac{1molCaCO_3}{100.1gCaCO_3}*\frac{1molCa}{1molCaCO_3}*\frac{40.1gCa}{1molCa}\\\\m_{Ca}=0.48444gCa

Finalmente, calculamos el porcentaje requerido como sigue:

\% Ca=\frac{0.48444g}{2.5000g} *100\%\\\\\%Ca=19.378\%

¡Saludos!

4 0
3 years ago
Which of the following is not a feature of iron (III) oxide?
nataly862011 [7]

B for sure, considering iron oxide is just fancy for rust.

3 0
3 years ago
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Which of the following statements would be the hypothesis most easily tested? a) Oak trees grow tallest between temperatures of
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Explanation:

This hypothesis is specific, can be tested (though perhaps not easily), and is well set up.

Hope this helps! :)

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I believe its because oxygen and carbon cant be sperated
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Sulfur and sodium are those two elements
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