What is a property of a solution with a high pH? Select all that apply. *
1 answer:
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Answer:
5
Explanation:
Given parameters:
Width of wedge = 2inches
Length of sloped side = 10inches
Unknown:
Mechanical advantage = ?
Solution:
A wedge is a simple machine used to split devices into two. It is a simple chisel.
The input force is through the width and the output wok done is through the length of the slope.
Mechanical advantage is the ratio of the output force to the input force;
M. A =
therefore;
M.A = = 5
Mechanical advantage has no unit.
<u>Answer:</u> The expression for equilibrium constant in terms of concentration is
<u>Explanation:</u>
Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric coefficients. It is represented by
For a general chemical reaction:
The is written as:
The concentration of pure solids and pure liquids are taken as 1.
For the given chemical reaction:
The expression for is:
In the above expression, magnesium oxide and magnesium carbonate will not appear because they are present in solid state.
So, the expression for becomes:
Hence, the equilibrium constant for the reaction is given above.