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PtichkaEL [24]
3 years ago
11

Why might a scientist repeat an experiment if he/she did not make a mistake in the first one? An experiment should be repeated t

o_________
Chemistry
1 answer:
algol133 years ago
7 0

ensure contant results

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The molar concentrations for the reactants and products at equilibrium are found to be [HCl]=0.80 M, [O2]=0.20 M, [Cl2]=3.0 M, a
olga nikolaevna [1]

Answer:

\large \boxed{990}

Explanation:

                  4HCl +  O₂  ⇌  2Cl₂ + 2H₂O

E/mol·L⁻¹:   0.80    0.20      3.0       3.0

K_{\text{eq}} = \dfrac{\text{[Cl$_{2}$]$^{2}$[H$_{2}$O]$^{2}$}}{\text{[HCl]$^{4}$[O$_{2}$]}} = \dfrac{3.0^{2}\times3.0^{2}}{0.80^{4}\times 0.20} = \mathbf{990}\\\\\text{The $K_{\text{eq}}$ value is $\large \boxed{\mathbf{990}}$}

3 0
3 years ago
Read 2 more answers
A neutral atom with two valence electrons would form
Alinara [238K]

Answer:

ionic bond

Explanation:

as it donate 2 electron and formed ionic bond

3 0
3 years ago
Which energy transformation occurs in an<br> electric motor?
vivado [14]

Answer:

Electrical energy to mechanical energy

Explanation:

In an electric motor, the energy transformation that is involve is a move from from electrical energy to mechanical energy.

For every system, according to the law of conservation of energy "energy is neither created nor destroyed but transformed from one form to another".

  • An electric motor converts electrical energy to mechanical energy
  • The electrical energy passes through and electromagnet set up.
  • This then cause the motion to rotate.
  • Therefore, electrical energy is transformed to mechanical energy.
5 0
3 years ago
QUESTION 1
Scilla [17]

Answer:

The answers are:

1) Latent heat of fusion

2) Heat is released

3) The process is endothermic

Explanation:

(1) The amount of energy required to freeze one kg of a substance is called latent heat of fusion.

(2) In a process, if heat is absorbed, the change in enthalpy for the substance is positive.

In a process, if heat is released, the change in enthalpy for the substance is negative.

The enthalpy of freezing for water is -6.02 kJ/mol. Heat is released as the enthalpy is negative.

(3) A positive value for enthalpy of vaporization indicates that the process is endothermic.

An exothermic process is one in which energy is released. The enthalpy for the process is negative.

An endothermic process is one which energy is absorbed. The enthalpy for the process is positive.

7 0
4 years ago
An ideal gas contained in 5.0 liter chamber at a temperature of 37°C. If
kodGreya [7K]

Answer:

i am doing this in science also i would like to know if u know

Explanation:

8 0
3 years ago
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