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statuscvo [17]
3 years ago
13

True or false condensation occurs when liquid is converted to a solid

Chemistry
2 answers:
Snowcat [4.5K]3 years ago
5 0

Answer:

If you cool a gaseous substance, you can watch the phase changes that occur. The phase changes are: Condensation — going from a gas to a liquid. Freezing — going from a liquid to a solid.

<u>Do what you please with that answer.</u>

ikadub [295]3 years ago
4 0

Answer:

False.

Explanation:

When a liquid turns into a solid it is called melting, what you are referring is when gas turns into liquid.

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How many moles of oxygen are required to react completely with 5 mol C8H18?
Nata [24]

Answer:

62.5 moles of O₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2C₈H₁₈ + 25O₂ —> 16CO₂ + 18H₂O

From the balanced equation above,

2 moles of C₈H₁₈ reacted with 25 moles of O₂.

Finally, we shall determine the number of mole of O₂ needed to react with 5 moles of C₈H₁₈. This can be obtained as shown below:

From the balanced equation above,

2 moles of C₈H₁₈ reacted with 25 moles of O₂.

Therefore, 5 moles of C₈H₁₈ will react with = (5 × 25) / 2 = 62.5 moles of O₂.

Thus, 62.5 moles of O₂ is needed for the reaction.

6 0
3 years ago
A.liver e.mouth i.stomach
viktelen [127]

Answer:

8. c

9. e

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18. b

19. i

Explanation:

8 0
3 years ago
Describe how you would prepare a supersaturated solution.
Anastasy [175]
To make a supersaturated solution<span>, make a saturated </span>solution<span> of sugar by adding 360 grams of sugar to 100 mL of water at 80 degrees Celsius. When the water cools back down to 25 degrees, that 360 grams of sugar will still be dissolved even though the water </span>should<span> only dissolve 210 grams of sugar.</span>
4 0
3 years ago
Read 2 more answers
If you put an egg on a sidewalk on a hot day in July and try to cook it, you are using
Naddik [55]
Thermal energy from the sun that has transferred to the sidewalk
6 0
2 years ago
Which factors are used to calculate the connetic energy of an object?
lora16 [44]
<span>You can use physics to calculate the kinetic energy of an object. When you start pushing or pulling a stationary object with a constant force, it starts to move if the force you exert is greater than the net forces resisting the movement, such as friction and gravity. If the object starts to move at some speed, it will acquire kinetic energy.So how do you calculate kinetic energy?A force acting on an object that undergoes a displacement does work on the object. If this force is a net force that accelerates the object (according to Newton’s second law), then the velocity changes due to the acceleration. The change in velocity means that there is a change in the kinetic energy of the object.The change in kinetic energy of the object is equal to the work done by the net force acting on it. This is a very important principle called the <span>work-energy theorem. </span>After you know how work relates to kinetic energy, you’re ready to take a look at how kinetic energy relates to the speed and mass of the object.The equation to find kinetic energy,<span> KE,</span> is the following, where m is mass and v is velocity:Using a little math, you can show that work is also equal to (1/2)mv2. Say, for example, that you apply a force to a model airplane in order to get it flying and that the plane is accelerating. Here’s the equation for net force:F = maThe work done on the plane, which becomes its kinetic energy, equals the following:Net force F equals mass times acceleration. Assume that you’re pushing in the same direction that the plane is going; in this case, cos 0 degrees = 1, soW = Fs = masAssuming constant acceleration, you can tie this equation to the final and original velocity of the object. Use the equationwhere<span> v</span>f equals final velocity and vi equals initial velocity. Solving for a gives youIf you plug this value of a into the equation for work, W = <span>mas, </span>you get the following:If the initial velocity is zero, you getThis is the work that you put into accelerating the model plane — that is, into the plane’s motion — and that work becomes the plane’s kinetic energy, KE:This is just the work-energy theorem stated as an equation.You normally use the kinetic energy equation to find the kinetic energy of an object when you know its mass and velocity. Say, for example, that you’re at a firing range and you fire a 10-gram bullet with a velocity of 600 meters/second at a target. What’s the bullet’s kinetic energy? Using the equation to find kinetic energy, you simply plug in the numbers, remembering to convert from grams to kilograms first to keep the system of units consistent throughout the equation:</span><span>The bullet has 1,800 joules of energy, which is a lot of energy to pack into a 10-gram bullet.

Hope this helps!!!!!</span>
3 0
3 years ago
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