2 years ago

What does LeChatelier's Principle state?

1 answer:

3 0

Answer:

Le Chatelier's principle is an observation about chemical equilibria of reactions. It states that changes in the temperature, pressure, volume, or concentration of a system will result in predictable and opposing changes in the system in order to achieve a new equilibrium state.

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Which of the following coefficients is needed to balance the combustion reaction of methane? a.3 b.2 c.4 d.equation is already b

Alla [95]

I might go with d it seems right to me hope this helps.

3 0

2 years ago

2. Given the unbalanced equation:

zheka24 [161]

2 Na + 2 H2O → 2 NaOH + H2 (balanced equation)
The answer would be 2, since 2 in the coefficient of both Na and NaOH

7 0

2 years ago

a. Calculate the pH of a solution that has [H3O+]= 4.3 x 10-5 M. b. Is the solution acidic or basic? How do you know?

Luda [366]

Answer:

* $pH=4.37$

* The solution is acidic since the pH is below 7.

Explanation:

Hello,

In this case, we can mathematically define the pH by:

$pH=-log([H_3O^+])$

Thus, for the given hydronium concentration we simply compute the pH:

$pH=-log(4.3x10^{-5})=4.37$

Thereby, we conclude the solution is acidic due to the fact that the pH is below 7 which is the neutral point and above it the solutions are basic.

Regards.

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2 years ago

Two angles with measures (6x + 60) (90)<br> are supplementary. What is the value of x?

fredd [130]

Supplementary angles add up to 180, so
6x+60+90 = 180 and solve for x
6x= 30
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5 0

3 years ago

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Convert the following: 4.6L(liters) to ml(milliliters).

Minchanka [31]

Answer: