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Zanzabum
2 years ago
15

HELP ASAP PLZZZZZZZZ

Chemistry
1 answer:
mash [69]2 years ago
8 0

Answer:

ans : C

..............

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Ejemplos de magnitudes escalares en la vida cotidiana?<br>​
Doss [256]

Answer:

Temperatura. Es una magnitud escalar ya que un valor numérico la define por completo. ...

Presión. ...

Longitud. ...

Energía. ...

Masa. ...

Tiempo. ...

Área. ...

Volumen.

Explanation:

3 0
3 years ago
C3H8+3O2 = 3CO2+4H2O what is the enthalpy combustion
dezoksy [38]

Answer:

\Delta H_{comb}=2043.85kJ/mol

Explanation:

Hello there!

In this case, according to the given chemical reaction, it possible for us to set up the expression for the calculation of the enthalpy change as shown below:

\Delta H_r=-\Delta H_{comb}=3\Delta _fH_{CO_2}+4\Delta _fH_{H_2O}-\Delta _fH_{C_3H_8}-3\Delta _fH_{O_2}

Thus, given the values of the enthalpies of formation on the attached file, we obtain:-\Delta H_{comb}=3(-393.5kJ/mol)+4(-241.8kJ/mol)-(-103.85kJ/mol)-3(0kJ/mol)\\\\-\Delta H_{comb}=-2043.85kJ/mol\\\\\Delta H_{comb}=2043.85kJ/mol

Best regards!

8 0
2 years ago
Which of these bonds should be classified as ionic?
jolli1 [7]

Answer:

Na-O

Be-S

Explanation:

ionic bonds= metal and non metal

7 0
3 years ago
Read 2 more answers
Limes and lemons have a ph of 2 and are _____. acidic basic bases hydroxides
alexdok [17]
Limes and lemons have a ph of 2 and are acidic.
3 0
3 years ago
Consider the generic reaction: 2 A(g) + B(g) → 2 C(g). If a flask initially contains 1.0 atm of A and 1.0 atm of B, what is the
irina1246 [14]

Answer:

b. 1.5 atm.

Explanation:

Hello!

In this case, since the undergoing chemical reaction suggests that two moles of A react with one moles of B to produce two moles of C, for the final pressure we can write:

P=P_A+P_B+P_C

Now, if we introduce the stoichiometry, and the change in the pressure x we can write:

P=1.0-2x+1.0-x+2x

Nevertheless, since the reaction goes to completion, all A is consumed and there is a leftover of B, and that consumed A is:

x=\frac{1.0atm}{2}=0.5atm

Thus, the final pressure is:

P=1.0-2(0.5)+1.0-(0.5)+2(0.5)\\\\P=1.5atm

Therefore the answer is b. 1.5 atm.

Best regards!

3 0
2 years ago
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