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Maslowich
3 years ago
9

Give your familiarity for following terms

Chemistry
1 answer:
KiRa [710]3 years ago
3 0

Answer:

  1. <em><u>The roasting process is a delicate combination of art and science . Roasters are familiar with how the beans look and the smells </u></em><em><u>Well, familiarity with the machine makes things much easier to predict, but the best way is to do many different tests </u></em><em><u>.</u></em><em><u>Well, familiarity with the machine makes things much easier to predict, but the best way is to do many different tests</u></em><em><u>.</u></em>
  2. <em><u>Smelting is a process of applying heat to ore in order to extract a base metal. It is a form of extractive metallurgy. It is used to extract many metals from their ores, including silver, iron, copper, and other base metals.</u></em><em><u>In zone refining, solutes are segregated at one end of the ingot in order to purify the remainder, or to concentrate the impurities. For example, in the preparation of a transistor or diode semiconductor, an ingot of germanium is first purified by zone refining.</u></em>
  3. <em><u> </u></em><em><u>In zone refining, solutes are segregated at one end of the ingot in order to purify the remainder, or to concentrate the impurities. ... For example, in the preparation of a transistor or diode semiconductor, an ingot of germanium is first purified by zone refining.</u></em>
  4. <em><u>Polling is the process where the computer or controlling device waits for an external device to check for its readiness or state, often with low-level hardware. For example, when a printer is connected via a parallel port, the computer waits until the printer has received the next character.</u></em>

Explanation:

hope it heloed

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2CrO4 2−(aq)+2H+(aq)⇌Cr2O7 2−(aq)+H2O(l)Write the equation for the equilibrium constant (K) of the reaction studied in this exer
Vikki [24]

Answer:

K = \frac {[Cr_{2}O_{7}^{2-}]}{[CrO_{4}^{2-}]^{2} \cdot [H_{3}O^{+}]^{2}}  

Explanation:  

The equilibrium constant for a given reversible aqueous reaction is defined by the product ratio of the concentrations between the products and reactants:      

                                           aA + bB ⇄ cC + dD

K = \frac {[products]^{p}}{[reactants]^{r}} = \frac {[C]^{c} \cdot [D]^{d}}{[A]^{a} \cdot [B]^{b}}  

<em>where K: is the equilibrium constant, [C] and [D]: are the product concentrations, [A] and [B]: are the reactant concentrations and a,b,c,d: are the stoichiometric coefficients from the reaction.   </em>

Therefore, based on the definition the equilibrium constant of our reaction is:    

2CrO₄²⁻(aq) + 2H₃O⁺(aq) ⇄ Cr₂O₇²⁻(aq) + 3H₂O(l)

K = \frac {[Cr_{2}O_{7}^{2-}]}{[CrO_{4}^{2-}]^{2} \cdot [H_{3}O^{+}]^{2}}  

Generally, the water concentration is omitted from the expressions.

I hope it helps you!

8 0
3 years ago
If the mass of a material is 111 grams and the volume of the material is 11 cm3, what would the density of the material be?
dolphi86 [110]
D = m / V

D = 111 g / 11 cm³

D = 10.09 g/cm³
6 0
3 years ago
Which of the following is true about gravity? <br><br> Select all that apply.
Ivenika [448]

Answer:

its always attractive

Explanation:

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5 0
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Shtirlitz [24]

Answer:

A physical change is a change that does not change the chemical properties of the substance and is purely physical.

Explanation:

The appearance of the object of chemical may change but its chemical properties are the same.

For example:

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4 0
3 years ago
Why could element 119 be right below Fr in the periodic table if discovered?
faust18 [17]

Answer:

Ununennium, also known as eka-francium or element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period. It is the lightest element that has not yet been synthesized.

Explanation:

7 0
3 years ago
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