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olga55 [171]
3 years ago
9

What usally happens when two continentel plates converge

Chemistry
1 answer:
ira [324]3 years ago
5 0
<span>crunching and folds the rock at the boundary, lifts it up and leads to the formation of mountains </span>
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When water was added to a 4.00 gram mixture of potassium oxalate hydrate (molar mass 184.24 g/mol) and calcium hydrate shown bel
Sliva [168]

Answer:

% (COOK)2H2O = 37.826 %

Explanation:

mix: (COOK)2H2O + Ca(OH)2 → CaC2O4 + H2O

∴ mass mix = 4.00 g

∴ mass (CaC2O4)H2O = 1.20 g

∴ Mw (COOK)2H2O = 184.24 g/mol

∴ Mw (CaC2O4)H2O = 146.12 g/mol

∴ r = mol (COOK)2H2O / mol (CaC2O4)H2O = 1

  • % (COOK)2H2O = (mass (COOK)2H2O / mass Mix) × 100

⇒ mass (COOK)2H2O = (1.20 g (CaC2O4)H2O)×(mol (CaC2O4)H2O / 146.12 g (CaC2O4)H2O)×(mol (COOK)2H2O/mol (CaC2O4)H2O)×(184.24 g (COOK)2H2O/mol (COOK)2H2O)

⇒ mass (COOK)2H2O = 1.513 g

⇒ % (COOK)2H2O = ( 1.513 g / 4 g )×100

⇒ % (COOK)2H2O = 37.826 %

7 0
4 years ago
Un gas ocupa un volumen de 1475 ml a la presión de 1145 hPa .Se le permite expandir, trabajando isotérmicamente, hasta que su pr
Gnom [1K]

Answer:

2465.63 mL o 2.65 L

Explanation:

En este caso, como ya el ejercicio está diciendo que el gas se expande de forma isotérmica, significa que la temperatura en la cual se está trabajando es constante. Por ejemplo, si al principio estaba a 25 °C, entonces al final del proceso también estará a esa temperatura.

Como la temperatura es constante, la expresión para un gas ideal no puede ser utilizada. En su lugar, usamos la ley de Boyle que es para temperatura constante y es la siguiente:

P₁V₁ = P₂V₂

Entonces, solo debemos tomar en cuenta que las unidades respectivas de presión y volumen son las correctas y además, que sean las mismas.

En este caso P1 = 1145 hPa. Debemos convertir las unidades de Pascal a atmosfera. en este caso, la conversión es la siguiente:

1 atm -------> 1.01325x10⁵ Pa

Pero tenemos hPa, y 1 hPa son 100 Pa, entonces:

1145 hPa * 100 Pa / 1 hPa = 114500 Pa

Ahora aplicamos la conversión previa para tener la presión en Atm:

P₁ = 114500 Pa * 1 atm / 1.01325x10⁵ Pa = 1.13 atm

Ahora podemos calcular el volumen final del gas. Debería estar en Litros pero podemos trabajar en mililitros y luego convertirlo a Litros.

V₂ = P₁V₁ / P₂

V₂ = 1475 * 1.13 / 0.63

V₂ = 2645.63 mL o simplemente 2.65 L

Este sería el volumen final del gas.  

5 0
3 years ago
For the procedural error, indicate if the error will affect the actual yield of copper(II) saccharinate product and if it does,
jolli1 [7]

Answer:

Lowers the actual yield

Explanation:

5 0
3 years ago
I NEED THIS FAST PLZ!!!<br><br> CAN U GUYS HELP ME ANSWER ANY OF THESE QUESTIONS
liubo4ka [24]

Answer:

Pascal is the most common unit for measuring pressure

The average sea level pressure is 1013 mbar

4 0
3 years ago
Read 2 more answers
The molecules in a sample of oxygen gas are in constant motion. What does an increase in temperature indicate about the movement
Basile [38]

Answer:

An increase in temperature indicates that the molecules of gas speed up.


Explanation:


The molecular kinetic theory states that the average kinetic energy of gas particles (molecules) is proportional to the absolute (Kelvin) temperature of the gas, and all gases at the same temperature have the same average kinetic energy.


Therefore, as the temperature increases so the kinetic energy increases.


It is also known that the kinetic energy is proportional to the squared speed of the particles, therefore the higher the kinetic energy the average speed of the molecules:


  • higher temperature → higher kinetic energy → higher average speed
4 0
3 years ago
Read 2 more answers
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