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ziro4ka [17]
3 years ago
7

The color produce when the following compound is burnt LiCl NaCl KCl CaCl2

Chemistry
1 answer:
alexandr402 [8]3 years ago
4 0

Answer:

LiCl - pink

NaCl - yellow

KCl - purple/blue-violet

CaCl₂ - orange/orange-red

Hope this helps.

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If 4.50 l of water vapor at 50.2 °c and 0.121 atm reacts with excess iron, how many grams of iron(iii) oxide will be produced?
Flura [38]
When the balanced equation for this reaction is:
2Fe + 3H2O → Fe2O3  +  3H2

and according to the vapour pressure formula:
PV= nRT
when we have P is the vapor pressure of H2O= 0.121 atm
and V is the volume of H2O = 4.5 L
and T in Kelvin = 52.5 +273 = 325.5 K
R= 0.08205 atm-L/g mol-K
So we can get n H2O
So, by substitution:
n H2O = PV/RT
            = (0.121*4.5)/(0.08205 * 325.5) = 0.02038 gmol
n Fe2O3 = 0.02038 * (1Fe2O3/ 3H2O) = 0.00679 gmol
Note: we get (1FeO3/3H2O) ratio from the balanced equation.
we can get the Mass of Fe2O3 from this formula:
Mass = number of moles * molecular weight       
  when we have a molecular weight of Fe2O3 = 159.7
          =  0.00679 * 159.7 = 1.084 g
∴ 1.084 gm of Fe2O3 will produced
6 0
3 years ago
Read 2 more answers
Does sodium (Na) and argon (Ar) on the periodic table have similar properties? Explain in terms of location on the periodic tabl
iVinArrow [24]

Sodium (Na) and Argon (Ar) on the periodic table does not have similar properties.

PERIODIC TABLE:

  • Periodic table is the organized table that showcases the position of elements. The periodic table is organized into groups and periods.

  • Groups of the periodic table is in a vertical format labeled 1 - 7 while the period is in a horizontal format labeled 1 - 7.

  • Elements in the same group have the same number of valence electrons and hence, possess similar chemical properties.

  • Sodium (Na) belongs to group 1 while argon is a noble gas, hence, they are not in the same group of the periodic table and cannot have same properties.

Learn more at: brainly.com/question/24089206?referrer=searchResults

6 0
2 years ago
Although a scientific theory is well supported and widely accepted, what might cause it to change? HELPPP
ASHA 777 [7]
Although a scientific theories will support and wildly excepted, what might cause of the change?

the answer would be A, New Evidence.
8 0
2 years ago
In the balanced equation (picture included) how many moles of O2 MOLECULES and O2 ATOMS react?
tangare [24]

1) The answer is: 2 moles of oxygen molecules.

Balanced chemical reaction of methane combustion:  

CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g).

Coefficients with the lowest ratio indicate the relative amounts of substances in a reaction.

In fronf of oxygen molecule is coefficient 2.

2) The answer is: 4 moles of oxygen atoms.

In one molecule of oxygen there are two oxygen atoms, so in two molecules there are four oxygen atoms.

6 0
3 years ago
Calculate the delta S rxn at 25 degrees celsius for the reaction 2NH3(g)->>N2H4(g) + H2(g). Do you know where I can find t
Alchen [17]
In order to find your answer you need to be <span>measuring entropy, so you will be using the following formula:
</span><span>delta S= S of (N2H4) + S of ( H2) - [2( S of NH3)]
</span>Hope this is very useful for you
3 0
3 years ago
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