bella2284

02.12.2020 • 

Chemistry

3 Drag each statement to the correct category.
Identify each statement as either true or false,
The greater the mass, the
greater the gravitational pull.
An object's mass is less on
the Moon than it is on Earth.
Gravitational pull decreases with
an increase in the distance between
two objects.
The momentum of moving planets
does not depend on their masses.
If there were no gravity, planets
would collide with one another.
The Sun revolves in an
orbit within our galaxy.
True
False

Ответ:

douglastheboy

12.04.2021

Chemistry

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The answer to your question is   Ka = 1.99 x 10⁻⁵

Explanation:

Data

pKa = 4.7

Ka = ?

Ka is the acid dissociation constant, it measures the dissociation of n acid in aqueous solution. It does not have units.

pKa is a value that helps to indicate the strength of an acid.

Formula

pKa = -log Ka

-Substitution

4.7 = -log Ka

-Solve for Ka

    -4.7 = log Ka

  antilog (-4.7) = Ka

-Result

  Ka = 1.99 x 10⁻⁵

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