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aleksandrvk [35]
3 years ago
8

What is the mass in grams of a sample of 1.20 x 10 22 atoms of mercury?

Chemistry
2 answers:
lara [203]3 years ago
5 0
4.0g Hg. I may be wrong and I really don't remember how to do it so I am not going to tell you my work, but I tried because I never did good on the chapter in chem.
ArbitrLikvidat [17]3 years ago
5 0
The number of moles in a substance indicates the amount of the substance that contains the same number of particles as 12 g of the Carbon-12 isotope [or equivalent to 6.02 × 10²³] (which is used as a standard in the world of moles).

Now,

          if     6.02 × 10²³ atoms are found in 1 mole of mecury
   then let   1.20 × 10²² atoms are found in     x

⇒     x  =    (1.20 × 10²²)  ÷  (6.02 × 10²³)

            =  0.0199 moles

Now, mass = moles × molar mass

∴ mass of Hg = 0.0199 mol ×  201 g/mol
                      = 4.001 g

∴ T<span>he mass in grams of a sample of 1.20 x 10</span>²²<span> atoms of mercury is ~ 4 g</span>
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Answer:

Particles would move more freely, while still staying close together depending on the shape of the liquid

Explanation:

Melting is the process of going from a solid to a liquid due to the increase in heat/energy. This increase in heat/energy increases the speed at which the atoms within the object moves. Lets say we had an ice cube. While it is a cube, the particles inside the cube are slow and compact, staying close together.

When enough energy is gained, this makes the particles begin to move faster, gaining heat and energy which results in the ice cube melting and moving more freely than normal.

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2 years ago
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Write two reactions showing nascent Hydrogen is more reactive than<br> molecular Hydrogen.
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Answer:

1.) Nascent Hydrogen has more energy than Molecular Hydrogen.

2.) Nascent Hydrogen is are more on the side of atomic and since atoms are more active than molecules, Nascent Hydrogen becomes more reactive.

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Now liters at the same temperature and pressure: liters of H2 + liters of O2 → liters of H2O
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A gas at constant temperature has a pressure of 404.6 kPa with a volume of 12 ml. If the volume changes to 43ml, what is the new
blagie [28]

Answer:

The answer is

<h2>112.912 kPa</h2>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the new pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

404.6 kPa = 404600 Pa

From the question we have

P_2 =  \frac{404600 \times 12}{43}  =  \frac{4855200}{43}  \\  = 112911.6279... \\  = 112912

We have the final answer as

<h3>112.912 kPa</h3>

Hope this helps you

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Answer:I believe your answer would be option B) dilute. Hope this helps.

Explanation:

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