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Dovator [93]
3 years ago
10

Is Water a mixture or compound​

Chemistry
1 answer:
Gennadij [26K]3 years ago
8 0

Answer:

online its says........

Explanation:

Water is colorless, odorless, transparent, tasteless exist gaseous, liquid, and solid states. People are confused about the water either it is mixture or compound. Water is made of two hydrogen atoms and one oxygen atom linked by covalent bonding. It is formed by reaction of hydrogen atom and oxygen atom.

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Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2H2S(g) 3O2(g)2H2O(l) 2SO2
Marizza181 [45]

Answer:

\Delta _rH=-1124.14kJ/mol

Explanation:

Hello!

In this case, since the standard enthalpy change for a chemical reaction is stood for the enthalpy of reaction, for the given reaction:

2H_2S(g) +3O_2(g)\rightarrow 2H_2O(l) +2SO_2(g)

We set up the enthalpy of reaction considering the enthalpy of formation of each species in the reaction at the specified phase and the stoichiometric coefficient:

\Delta _rH=2\Delta _fH_{H_2O,liq}+2\Delta _fH_{SO_2,gas}-2\Delta _fH_{H_2S,gas}-3\Delta _fH_{O_2,gas}

In such a way, by using the NIST database, we find that:

\Delta _fH_{H_2O, liq}=-285.83kJ/mol\\\\\Delta _fH_{SO_2, gas}=-296.84kJ/mol\\\\\Delta _fH_{O_2,gas}=0kJ/mol\\\\\Delta _fH_{H_2S,gas}=-20.50kJ/mol

Thus, we plug in the enthalpies of formation to obtain:

\Delta _rH=2(-285.73kJ/mol)+2(-296.84kJ/mol)-2(-20.50kJ/mol)-3(0kJ/mol)\\\\\Delta _rH=-1124.14kJ/mol

Best regards!

8 0
2 years ago
What is Carbons position on the Periodic table?
MrRissso [65]
Carbon is located in the fourth group, second period. It is also in the nonmetal section of the table as well
7 0
3 years ago
C. Neither a Physical or Chemical Changu
Nutka1998 [239]

Explanation:

I think B a chemical change

5 0
3 years ago
What is 31 degrees Celsius in Fahrenheit
vovangra [49]
87.8 , 31 Celsius=87.8(88) in Fahrenheit
7 0
3 years ago
Read 2 more answers
When a substance gains or loses energy, it’s _____ changes, or its _____ chafes. Theses two changes do ___happen at the time ; t
Veseljchak [2.6K]

Answer:

When a substance gains or loses energy, its <u>temperature</u> or <u>state</u> changes. These two changes do <u>not</u> happen with respect to time; the temperature remains <u>the same</u> until the change of <u>state</u> is complete.

Explanation:

This statement is about energy and change of the state of the matter. By gaining or losing energy, the physical state of the matter can change into one another. Melting, freezing, condensation, evaporation, sublimation, and deposition are the processes that support to change the physical state of the matter. Change in state and change in the matter do not happen at the same time. A substance gains or loses energy to reach a specific temperature and remains constant until the physical change of matter is completed.

3 0
3 years ago
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