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ElenaW [278]
3 years ago
11

Which of the following is a correct definition of the term rectification? 

Chemistry
1 answer:
romanna [79]3 years ago
5 0
In electronics, rectification is the conversion of alternating  current (AC) to direct current (DC). This process can be performed by a diode which is an electrical entity that allows current to flow in one direction but not in the reverse direction. An application of rectification is the research-based development of higher frequency rectifiers under terahertz and light frequencies.
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If the pKa value for a given acid is low, what does that say about the acid (is it weak or strong)?
Dmitry [639]

Answer:

If the pKa of the acid is low (negative), then the acid is strong.

Explanation:

Ka, <em>the acid ionization constant,  </em>measures the strength of an acid in a solution. Stronger acids have higher Ka values.

We defined: pKa = -log[Ka]

This function is a decreasing function, meaning that pKa will be getting smaller and smaller,  while increasing Ka (high values of Ka will have negative pKa values). Therefore, stronger acids (high values of Ka), will have low (negative) pKa values.

3 0
3 years ago
What are some ways to eliminate waste
Margaret [11]

Answer:

use following methods

Explanation:

  • Recycling the waste
  • segregation and dumping in right place
  • practice 4 R's
  • practice waste Management
  • reduce using undegredable waste like plastic bags

4 0
2 years ago
A cat runs across a road that
hichkok12 [17]
Lol it literally says that he covered the distance in three seconds so I believe it would be three
5 0
2 years ago
Which of these is the lowest subgroup? kingdom, order, genus, or species.
olga55 [171]
The correct answer is species

6 0
2 years ago
Read 2 more answers
Given that you started with 28.5 g of K3PO4, how many grams of KNO3 can be<br> produced?
Irina18 [472]

Mass of KNO₃ : = 40.643 g

<h3>Further explanation</h3>

Given

28.5 g of K₃PO₄

Required

Mass of KNO₃

Solution

Reaction(Balanced equation) :

2K₃PO₄ + 3 Ca(NO₃)₂ = Ca₃(PO₄)₂ + 6 KNO₃

mol K₃PO₄(MW=212,27 g/mol) :

= mass : MW

= 28.5 : 212,27 g/mol

= 0.134

Mol ratio of K₃PO₄ : KNO₃ = 2 : 6, so mol KNO₃ :

= 6/2 x mol K₃PO₄

= 6/2 x 0.134

= 0.402

Mass of KNO₃ :

= mol x MW KNO₃

= 0.402 x 101,1032 g/mol

= 40.643 g

8 0
2 years ago
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