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Orlov [11]
3 years ago
14

How many moles are there in 1.2 x 10^2 atoms of sulfur

Chemistry
1 answer:
Mariulka [41]3 years ago
5 0
Avogadro's number tells you that in one mol of element (sulfur) there are 6.022x10^23 atoms...

So,

1 mol : 6.022x10^23 = x mol : 1.2x10^2

x = 1.99 x 10^-22 mol

*Although this should be correct, you might want to check your question again. You probably misinterpret the question... you want 1.2x10^23 !! :) check it.
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In H2 (g) + I2 (g) = 2HI (g), the initial reactions H2 and I2 are each equal to 1 mol / L.
mezya [45]

Answer:

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3 0
3 years ago
Determine a massa, em kg, de um material que está contida em um volume de 18L. Sabe-se que a densidade do material é de 0,9 g/cm
suter [353]
The question in English is "<span>Determine the mass, in kg, of a material that is contained in a volume of 18L. It is known that the material density is 0.9 g/cm 3"

Answer: 
</span>
We can use a simple equation to solve this problem. <span>
    d = m/v</span><span>

<span>Where </span>d <span>is the density, </span>m <span>is the mass and </span>v is the volume.

d = </span>0.9<span> g/cm³
m = ?
v = </span>18 L = 18 x 10³ cm³<span>

By applying the equation,
<span>    0.9 g/cm³ = m / </span></span>18 x 10³ cm³<span>
                  m = 0.9 g/cm³ x </span>18 x 10³ cm³<span> 
<span>                  </span>m = 16200 g
                  m = 16.2 kg

Hence, the mass of 18 L of material is 16.2 kg.</span>
6 0
2 years ago
What happens to the speed of molecules in water vapor when it condenses to a form of liquid​
weeeeeb [17]

The speed of the molecules decrease.

When water condenses, the temperature of the water decreases. When the temperature of an molecule decreases, the speed of that molecule also decreases.

When water condenses, the speed of the molecules decreases.

3 0
3 years ago
Below is a short reaction sequence. Provide the structure of the two missing organic compounds.
dimaraw [331]

The product of this reaction is a halohydrin as shown here.

<h3>What are the products?</h3>

We have a reaction that first involves the formation an alkene as the bases are used on the first substrate. The alkene that is thus created is now able to react with the bromine in water.

The first step of the reaction is where the multiple bond is created and this multiple bond is what can now go on to participate in a chemical reaction in the next step of the process of reaction as shown in the image.

Bromine in water is also hat we call bromine water. This bromine water is able to add across a double bond and when that happen we will have a saturated compound. This could also be regarded as halohydrin reaction.

Recall that the first step of the reaction of the alkene with bromine is the formation of a dibromide via the brominium intermediate. This is now followed by reaction with water to form the halohydrin product.

Learn more about organic reaction:brainly.com/question/9585105

#SPJ1

4 0
1 year ago
What for instruments are used to monitor faults?
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Tiltmeters, creep meters, laser-ranging device, and GPS satellite.
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