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emmainna [20.7K]
4 years ago
9

I need help with both of the questions please ASAP!!!!!

Chemistry
1 answer:
Ksju [112]4 years ago
8 0

Answer:

Potential energy is at its highest when it is farthest in the air.

Kinetic energy is gretaest at the lowest point of movement.

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Why are the optimum conditions for the Haber process a temperature of 450°C and pressure of 200 atmospheres?
Novay_Z [31]

Answer:

See explanation.

Explanation:

Hello,

Haber process is defined as the widely acknowledged productive process of ammonia by the reaction:

N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)

Which is carried out in gaseous phase. Thus, by means of the Le Chatelier's principle, it is possible to know that its standard enthalpy of reaction is -45.90 kJ/mol (NIST webbook) for which it is an exothermic chemical reaction, for that reason less ammonia will be produced at high temperature, nonetheless, the temperature should not be too low since the reaction rate significantly decrease, therefore, the optimum found temperature is 450 °C.

Moreover, since there are more moles (3+1=4) at the reactants and less moles at the products (2), increasing the pressure of the reaction increases the yield of ammonia, nonetheless, higher pressures involve the purchasing of more expensive equipment to withstand the high-pressures, for that reason, the best found pressure has been set as 200 atm.

Best regards.

8 0
4 years ago
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Based on their lewis dot diagram, which of the following elements is a metal
mihalych1998 [28]

Answer:

Explanation:

b

8 0
3 years ago
Which of these elements is the most ductile?
Y_Kistochka [10]

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mercury

Explanation:

4 0
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What changes to the Earth's surface might benefit humans
drek231 [11]

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el cambio es capaz de deformar la superficie de la Tierra mediante la construcción de otras infraestructuras además de las urbanas yy casi el 150 % podria casuar que los humanos nos volvamos robots

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coronapil

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This plz <br> i will give brainliest
VLD [36.1K]

Answer:

B

Explanation:

Vanadium Oxide is a Catalyst for the contact process

And Catalysts are used to speed up the reaction rate, therefore the answer is "to increase the rate if reaction"

SIDE NOTE = catalysts are not used up in a reaction btw

3 0
3 years ago
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