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tamaranim1 [39]
2 years ago
8

Entir What is the striking back of the bunsen- burner?

Chemistry
1 answer:
svp [43]2 years ago
6 0

Answer:

With too little air, the gas mixture will not burn completely and will form tiny carbon particles that are heated to glowing, making the flame luminous. With too much air, the flame may burn inside the burner tube; that is, it may strike back.

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The volume of a gas is directly proportional to its temperature if the pressure of the particles is constant. This is a statemen
Deffense [45]
The gas is disposed proportional to the temperature to pressure of the particles
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3 years ago
An Sulfur tetrafluoride gas is collected at 23.0 °C in an evacuated flask with a measured volume of 20.0 L. When all the gas has
Jlenok [28]

mass = 20.48 g

moles=0.1895

<h3>Further explanation</h3>

In general, the gas equation can be written  

<h3>Pv=nRT  </h3>

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08205 L.atm / mol K  

T = temperature, Kelvin  

P=0.23 atm

V=20 L

T=23+273=296 K

\tt n=\dfrac{PV}{RT}=\dfrac{0.23\times 20}{0.082\times 296}=0.1895

mass SF₄ (MW=108,07 g/mol) :

\tt 0.1895\times 108,07 g/mol=20.48~g

7 0
2 years ago
If you started with 35.0 grams of H2S and 40.0 grams of O2, how many grams of S8 would be produced, assuming 95 % yield? 8H2S(g)
Vesnalui [34]
Molar mass

H2S = 34.0 g/mol
O2 = 31.99 g/mol
S8 = 256.52 g/mol

Identifying excess reagent and the limiting of the reaction :

8 H2S(g) + 4 O2(g) = S8(I) +  8 H2O(g)

8 x 34 g H2S -------->  256. 52 g S8
35.0 g ----------------> ??

35.0 x 256.52 / 8 x 34 =

8978.2 / 272 => 33.00 g of S8  

H2S is  the  limiting reactant
---------------------------------------------

4 x 31.99 g O2 --------------- 256.52 g S8
40.0 g O2 --------------------- ??

40.0 x 256.52 / 4 x 31.99 =

10260.8 / 127.96 = 80.16 g of S8  

O2 is the excess reagent is the excess <span>reagent
</span>
------------------------------------------------------------

H2S is the limiting reactant, one that is fully consumed, it is he who determines the mass of S8 produced 

33.0 g ----------- 100%
?? g ------------- 95 %

95 x 33.00 / 100 => 31.35 g

hope this helps!


4 0
2 years ago
True or False.
mrs_skeptik [129]
True because it s all true
4 0
3 years ago
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Is chlorine a substance or a mixture
WARRIOR [948]

Answer:

its a substance

Explanation:

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2 years ago
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