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Serhud [2]
2 years ago
10

Chemical Equations and Reactions WS

Chemistry
1 answer:
ruslelena [56]2 years ago
7 0

Answer:

1,1,1

decomposition reaction

Explanation:

The reaction equation is given as:

      _Ca(OH)₂  →   _CaO    +   _H₂O

This reaction is a decomposition reaction in which a single reactant breaks down to give two or more products.

To balance the equation, we assign variables a, b and c, then we use a mathematical approach to solve the problem;

          aCa(OH)₂  →   bCaO    +   cH₂O

Conserving Ca : a = b

                    O:  2a  = b + c

                   H:   2a = 2c

let a  = 1, b = 1 , c = 1

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galina1969 [7]

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yes; and because of how roughly they are played.

Explanation:

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3 years ago
6.75 L of carbon dioxide gas are stored at a pressure of 175 atm. If the temperature and number of gas particles do not change,
I am Lyosha [343]

Answer:

4.24 L

Explanation:

  • 6.75 L - 175 atm

x. - 110 atm

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175atm 175atm

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Why don’t scientists use the Bohr model above to explain charge transfer?
Jlenok [28]

Answer:

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3 years ago
An unsaturated solution is one that ________. an unsaturated solution is one that ________. contains the maximum concentration o
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4 0
3 years ago
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In
KIM [24]

Answer:

ΔH = -470.4kJ

Explanation:

It is possible to sum 2 or more reactions to obtain the ΔH of the reaction you want to study (Hess's law). Using the reactions:

1. CaC2(s) + 2H2O(l) → C2H2(g) + Ca(OH)2(s)ΔH = −414kJ

2. 6C2H2(g) + 3CO2(g) + 4H2O(g) → 5CH2CHCO2H(g)ΔH = 132kJ

6 times the reaction 1.

6CaC2(s) + 12H2O(l) → 6C2H2(g) + 6Ca(OH)2(s)ΔH = −414kJ*6 = -2484kJ

This reaction + 2:

6CaC2(s) + 3CO2(g) + 16H2O(l) →  + 6Ca(OH)2(s) + 5CH2CHCO2H(g) ΔH = -2484kJ + 132kJ = -2352kJ

As we want to calculate the net change enthalpy in the formation of just 1 mole of acrylic acid we need to divide this last reaction in 5:

6/5CaC2(s) + 3/5CO2(g) + 16/5H2O(l) →  + 6/5Ca(OH)2(s) + CH2CHCO2H(g) ΔH = -2352kJ / 5

<h3>ΔH = -470.4kJ</h3>

4 0
2 years ago
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