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4 years ago

Why it is so difficult to discover superiority of nature in creation and maintaining chemical bonds between elements?

1 answer:

5 0

There are different types of chemical bonds. These are difficult to break and therefore, it is also hard to change. The reason why it's difficult to discover superiority of nature is due to its natural attraction between atoms, ions or molecules that cannot be revoked by man.

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Los termómetros de mercurio no pueden medir temperaturas menores a -30oC debido a que a esa temperatura el Hg

Ksivusya [100]

Answer:

243.15 K y -22 F

Explanation:

Para convertir la temperatura desde grados Celsius (°C) a kelvin (K) se debe sumar 273.15 K:

K = °C + 273.15 = -30°C + 273.15 K = 243.15 K

Para convertir desde grados Celsius (°C) a Fahrenheit (F), se multiplica por 9/5 y se suma 32, como sigue:

F = (9/5 x °C) + 32 = (9/5 x (-30°C)) + 32= -22 F

Por lo tanto, una temperatura de -30°C corresponde a 243.15 Kelvin y -22 grados Fahrenheit.

3 0

3 years ago

How does changing the position of a light source such as a flashlight affect the size of an object's shadow

Alex73 [517]

If u were holding the flashlight above the object the shadow would be a circle on the ground if u were holding the flashlight in front of the object it would make a long slim shadow f the object
Ex: if I was standing near a wall and u held a flashlight in my face, not only I will be blinded by the bright light but it make a shadow of my head on the wall. different angles make different shadows

4 0

4 years ago

Which properties do not change the composition of a substance?

Nina [5.8K]

Answer:

Physical Properties

Explanation:

PHYSICAL PROPERTY

7 0

4 years ago

Calculate the values of LlU, LlH, and LlS for the following process: 1 mole of liquid water 1 mole of steam -+ at 25°C and 1 atm

vazorg [7]

Answer:

1. 46.44 Kj

2. 126.3 J|K

3. 43.34 Kj

Explanation:

change in temperature

25+274 = 298K

100+273 = 373

∆H = nC∆T + n∆H

1x75.5x75+1x40.79

= 5647.5+40.9

we convert 5647.5 to Kj

= 5.6475+40.79

= 46.44Kj

2.

∆S = 1x0.0753x(ln373/298) + 1molx40.79/373

= 0.01690 + 0.1094

= 0.1263kj/k

∆S = 126.3J|K

3.

∆U = ∆H - RTn

= 46.44-0.0831x373x1mol

= 46.44-3.09963

= 43.34

these resulting values are the correct answer to this question.

8 0

3 years ago

What is NaCI and what is KBr?

Rufina [12.5K]

NaCl= sodium chloride or salt
KBr= potassium bromide

3 0

3 years ago