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1 year ago

When steam from a pan of boiling water reaches a cool window, it condenses. How much

1 answer:

3 0

Because the air right above your hot pan of water is so warm, the water vapor can be quickly absorbed there. When the heat is removed, the hot convective up current from the pan vanishes and is replaced with cooler air that can no longer contain as much moisture, which makes the condensing water vapour visible.

First, it's important to discuss the "steam" that is produced by the hot water. While we refer to it as steam, it is not. Water that is heated above 100 degrees Celsius produces steam. The only area in the kitchen where you can see it clearly is if you look very closely at the spout of a boiling kettle. The first 5mm (1/4") of the liquid will be clear when it is boiling very near to the spout.

Learn more about Steam here-

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A child picks up a tennis ball tied to the end of a rope. He swings the rope around, over his head, in a circle. Once the ball i

kkurt [141]

Answer:

The ball will fly tangential to the original circle

Explanation:

The image here is missing, however we can still answer to the question.

In fact, the circular motion of the ball when it is tied to the rope is a combination of two separate effects:

1- The centripetal force, in the form of the tension in the rop, that pulls the ball at any time towards the centre of the circular path

2- The inertia of the ball, which tends to continue its motion in a straight direction, tangential to the circle and perpendicular to the direction of the centripetal force

When child let the string go, there is no more tension in the string acting on the ball, and therefore, there is no longer a centripetal force.

As a result, number 1) disappears, and therefore there is only the inertia of the ball that will determine its motion: and therefore, the ball will continue its motion straight in a direction tangential to the original circle.

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3 years ago

Francis is learning about dissolving at school. She reads descriptions about the rate of dissolving from four of her friends.

Naddika [18.5K]

Answer:

I personally think Manuel

Explanation:

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2 years ago

Read 2 more answers

Consider the reaction for the decomposition of hydrogen disulfide: 2H2S(g)⇌2H2(g)+S2(g), Kc = 1.67×10−7 at 800∘C A 0.500 L react

trasher [3.6K]

Answer:

Molar concentration of S₂ is 1.77×10⁻⁶M

Explanation:

For the reaction:

2H₂S(g) ⇄ 2H₂(g) + S₂(g)

The equilibirum constant, K, is defined as:

$K = \frac{[S_2][H_2]^2}{[H_2S]^2}$ <em>(1)</em>

Concentrations in equilibirum are:

[H₂S] : 0,163/0.500L - X

[H₂] : 0,0500/0.500L + X

[S₂] : X

Replacing the concentrations and the equilibrium value in (1):

$K = \frac{[X][0.1+X]^2}{[0326-X]^2}$

1.67x10⁻⁷ = X (X² + 0.2X + 0.01) / (X² -0.652X + 0.106)

1.67x10⁻⁷X² - 1.09x10⁻⁷X + 1.77x10⁻⁸ = X³ + 0.2X² + 0.01X

0 = X³ + 0.2X² + 0.01X - 1.77x10⁻⁸

Solving for X:

X = 1.77×10⁻⁶

As [S₂] = X, <em>molar concentration of S₂ is 1.77×10⁻⁶M</em>

I hope it helps!

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3 years ago

A compound is known to contain only carbon, hydrogen, and oxygen. If the complete combustion of a 0.150-g sample of this compoun

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Answer: the empirical formula is C3H4O3

Explanation:Please see attachment for explanation

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3 years ago

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Physicist Albert Einstein developed the famous equation shown below.

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E = mc2

Born on March 14, 1879, Albert Einstein is best known for developing the theory of relativity and the mass-energy equivalence formula E = mc2, often dubbed as 'the world's most famous equation'.

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3 years ago