A water molecule is composed of a large oxygen atom bonded to two small hydrogen atoms. Which of the following would make the be
st model of a water molecule?
A. A drawstring bag filled with blue, green, red, and yellow marbles
B. Four index cards printed with either an uppercase or lowercase letter
C. Two small, plastic balls attached to a larger plastic ball by toothpicks
D. A large, plastic bucket filled with dirt, dead leaves, and rocks
A. A drawstring bag filled with blue, green, red, and yellow marbles
B. Four index cards printed with either an uppercase or lowercase letter
C. Two small, plastic balls attached to a larger plastic ball by toothpicks
D. A large, plastic bucket filled with dirt, dead leaves, and rocks
2 answers:
Answer:
C. Two small, plastic balls attached to a larger plastic ball by toothpicks
Explanation:
One molecule of water has 1 oxygen atom and two atoms of hydrogen. Each hydrogen is attached to the oxygen by a simple bond, they share one pair of electron.
Because oxygen is larger than hydrogen, a manner to represent a single molecule is to have two small plastic balls (representing hydrogen) attached to a larger plastic ball (representing oxygen) by toothpicks (representing the bonds), such as the image below.
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Answer:
: conjugate acid of
: conjugate base of
: conjugate base of
: conjugate acid of
Explanation:
According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.
Here in forward reaction is accepting a proton, thus it is considered as a base and after accepting a proton, it forms
which is a conjugate acid.
And is losing a proton, thus it is considered as an acid and after loosing a proton, it forms
which is a conjugate base.
Similarly in the backward reaction, is loosing a proton, thus it is considered as a acid and after loosing a proton, it forms
which is a conjugate base.
And is accepting a proton, thus it is considered as a base and after accepting a proton, it forms
which is a conjugate acid.