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FrozenT [24]
3 years ago
6

Objects are recognized by their 1) shape 2) properties 3) odor 4)color

Chemistry
1 answer:
8_murik_8 [283]3 years ago
3 0
I would say properties.
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Formula equation is more informative than a word equation why​
Taya2010 [7]

Answer:

yes

Explanation:

this is because the formula equation shows the details on how they solved the equation

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3 years ago
Which two things cause the orbits of the planets to be the nearby circular
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5 0
3 years ago
The density of mercury is 13.5 g/mL and the density of water is 1.00 g/mL. If a mercury barometer reads 677 mmHg, what is the ba
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<span>802 mm Hg X 13.5/1 = 10827 mm H2O X (1 cm/10 mm) = 1083 cm H2O = 1.08 X 10^3 cm H2O</span>
8 0
3 years ago
Enough of a monoprotic acid is dissolved in water to produce a 1.64 M solution. The pH of the resulting solution is 2.82 . Calcu
Lady bird [3.3K]

Answer:

Ka = 1.39x10⁻⁶

Explanation:

A monoprotic acid, HX, will be in equilibrium in an aqueous medium such as:

HX(aq) ⇄ H⁺(aq) + X⁻(aq)

<em>Where Ka is:</em>

Ka = [H⁺] [X⁻] / [HX]

<em>Where [] is the molar concentration in equilibrium of each specie. </em>

The equilibrium is reached when some HX reacts producing H+ and X-, that is:

[HX] = 1.64M - X

[H⁺] = X

[X⁻] = X

As pH is 2.82 = -log [H⁺]:

[H⁺] = 1.51x10⁻³M:

[HX] = 1.64M - 1.51x10⁻³M = 1.638M

[H⁺] = 1.51x10⁻³M

[X⁻] = 1.51x10⁻³M

And Ka is:

Ka = [1.51x10⁻³M] [1.51x10⁻³M] / [1.638M]

<h3>Ka = 1.39x10⁻⁶</h3>
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4 years ago
Give an example of a case where the branches of natural science appeared overlap
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Much of biological studies are actually chemistry because of chemical changes that occur within organisms. Similarly, large parts of chemistry are governed by physics.
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