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4 years ago

Explain how the Haber process for producing ammonia is a good example of Le Châtelier’s principle.

1 answer:

8 0

LeChatelier's principle states that when a stress is imposed on a system, the equilibrium will react to counteract the stress. If a reaction is to the left, the equilibrium will shift to the left to counteract the position of equilibrium. In the Haber process the reaction between nitrogen and oxygen is exothermic.

$N_2 + 3H_2 \implies 2NH_3$ .

So we lower the temperature. The low temperature cause the reaction to produce more heat to counteract the low temperature. When more heat is produced, the reaction shifts to the right and produces more ammonia.

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1. A soccer player kicks a soccer ball towards the goal. If she kicks it with a velocity of 24 m/s at an angle of 31 degrees abo

ruslelena [56]

Answer:

Explanation:

<u>Projectile Motion</u>

It's the type of motion that experiences an object launched at a certain height above the ground and moves along a curved path exclusively under the action of gravity.

Being vo the initial speed of the object, θ the initial launch angle, and g the acceleration of gravity, then the maximum height hm can be calculated as follows:

$\displaystyle h_m=\frac{v_o^2\cdot \sin^2\theta}{2g}$

The soccer ball is kicked at a speed of vo=24 m/s at an angle of θ=31°. Taking the value of $g=9.8 m/s^2$ , then:

$\displaystyle h_m=\frac{24^2\cdot \sin^2 31^\circ}{2\cdot 9.8}$

$\displaystyle h_m=\frac{576\cdot 0.2653}{19.6}$

$h_m=7.80~m$

The ball will go as high as 8.46 m

4 0

3 years ago

Distance

34kurt

I honestly dont know

8 0

3 years ago

An automobile is traveling on a long, straight highway at a steady 76.0 mi/h when the driver sees a wreck 180 m ahead. at that i

masha68 [24]

a) The car’s speed just after leaving the icy portion of the road is the first part

We have s = ut + $\frac{1}{2} at^2$

Here s = 130 m, a = -1.2 $m/s^2$ , u = 76 mile/hr = 33.975 m/s

$130 = 0*t - 0.5*(-1.2)*t^2\\ \\ \\ t=14.72 seconds$

After 14.72 seconds cars speed is given by v =u +at

u = 33.975m/s, a = -1.2 $m/s^2$

v = 33.975-1.2*14.72 = 16.31 m/s

So velocity of car on leaving icy surface = 16.31 m/s

b) Time taken after icy surface

0 = 16.31 - 7.10*t

t = 2.23 seconds

Distance traveled during this time

$v^2 = u^2+2as\\ \\ 0 = 16.31^2 - 2*7.10*s\\ \\ s = 18.74 m$

Total distance traveled = 130+18.74 = 148.74 m

c) Total time taken = 14.72+2.23=16.95 seconds

3 0

3 years ago

Plants make ___________ using carbon dioxide, water and energy from the sun.

gizmo_the_mogwai [7]

Answer:

I think it's carbohydrates

Explanation:

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

7 0

3 years ago

Match each feature related to the process of seafloor spreading with its location on the diagram

nikklg [1K]

Answer:

Seafloor spreading is a geological process that occurs in the ocean. It is occurs due to divergent plate tectonics. As, lithospheric plates of the ocean moves away from each other, the heat from the mantle liberates as convection currents that decreases the density of the crust. The less dense material rises, resulting the elevation of the seafloor, which is called as sea floor spreading.

Explanation:

4 0

3 years ago