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allochka39001 [22]
3 years ago
15

Besides the concentration of the acid and its conjugate base, what else does one need to calculate the ph of a weak acid

Chemistry
1 answer:
Marta_Voda [28]3 years ago
3 0
K_{a}, the acid disassociation constant. 
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A gold nugget has a density of 38.6g/cm3 and a mass of 270.2. what is its volume?​
aivan3 [116]

Density is given by the equation D=m/V, were D is density, m is mass in grams, and V is volume in cubic centimeters.


In this problem, we have density and we have mass so we can plug into the equation and solve for V.

38.6=270.2/V

<em>*Multiply both sides by V*</em>

38.6V=270.2

<em>*Divide both sides by 38.6*</em>

V=7


The volume of the gold nugget is 7cm3.


Hope this helps!!

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3 years ago
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one molecule of chlorophyll contains 137 atoms. how many of these atoms come from the metal magnesium?
Svetlanka [38]
The chemical formula for chlorophyll is C55H72O5N4<span>Mg. Only 1 of the 137 atoms comes from magnesium.

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2 years ago
What does vinegar do to eggs
andre [41]

Eggshells are made primarily of calcium carbonate. The acid in vinegar softens the calcium of the eggshell. Adding a little vinegar to the water when boiling eggs is an old cook’s trick that makes them easier to peel.

A link to this experiment is below in the comment box


7 0
2 years ago
According to the electron-cloud model of the atom, an orbital is a
Aleks [24]

Answer : Option 4) Region of the most probable electron location.


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This electron cloud model was different from the older Bohr atomic model by Niels Bohr.

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3 years ago
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Sodium borohydride, NaBH4, and boron trifluoride, BF3, are compounds of boron. What are the shapes around boron in the borohydri
STatiana [176]
Compound 1: Sodium borohydride
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........................................................................................................................

Compound 2: B<span>oron trifluoride
</span>In boron trifluoride (BF3), B is a central metal.
Electronic configuration of B is 1s2 2s2 2p1.
B undergoes sp2 hybridization in NaBH4, to generate 3 hybrid orbitals. These hybrid orbitals, forms sigma bond with 3 'H' atoms. Due to this, the structure of <span>boron trifluoride</span> is <span>triangular planner</span>.
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3 years ago
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