1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maw [93]
3 years ago
8

What is the approximate ratio of [NO2-] to [HNO2] in order to buffer a solution at pH=4.0?

Chemistry
1 answer:
Strike441 [17]3 years ago
6 0
For the equilibrium that exists in an aqueous solution<span> of nitrous acid (</span>HNO2, a weak acid) ... [H+][NO2. –]. [HNO2<span>]. PAGE: 14.1. 2. Which of the following is a conjugate ... Using the following Ka values, indicate the correct </span>order<span> of base strength. </span>HNO2<span>. Ka = </span>4.0<span> × 10–4 .... Calculate the [H+] in a </span>solution<span>that has a </span>pH<span> of 11.70.
i hope thid works

</span>
You might be interested in
Electronic configurations and charges of the ions<br>in lithium fluoride?​
BARSIC [14]

Answer:

Explanation:

The electronic configuration of a lithium atom is 2.1 and that of a fluorine atom is 2.7

an atom of lithium donates an electron to an atom of fluorine to form an ionic compound. The transfer of the electron gives the lithium ion a net charge of +1, and the fluorine ion a net charge of -1.

7 0
3 years ago
Which of the follow statements is true?
goldfiish [28.3K]

Answer:

The true statement is a. Reductants reduce oxidants and become oxidized.

Explanation:

The principle characteristic of reductant is to donate electron and that donated electron is accepted by an oxidant.

      As a result reductant become oxidized by reducing the oxidant which itself get reduced by accepting the electron from the reductant.

     

4 0
3 years ago
Yvonne is interested in the field which weighs morality and the technological ability to modify genetic material in humans. She
kodGreya [7K]

Hello there! It sounds like she intends to pursue a career in Genetic engineering

Genetic engineering is "the deliberate modification of the characteristics of an organism by manipulating its genetic material". Since Yvonne is interested in the possibility of modifying human DNA, this seems to be the perfect fit since it involves modifying DNA.

Hope this helps, have a great day!


3 0
3 years ago
Read 2 more answers
Which of the following contains most of the water on earth?
mrs_skeptik [129]

Answer:

a

Explanation:

most of the world is made of water because the oceans.

4 0
3 years ago
Read 2 more answers
In terms of energy what kind of system is a sealed glass terrarium on a windsill?
Snezhnost [94]
If the sealed glass is permeable to sunlight or to transfer of heat will be an open system, but if the sealed glass is a thermic glass and doesn't allow exchange of heat and exchange of solar energy (for example a mirrored glass that reflect the sunlight) and the terrarium is not exchanging energy with the surroundings will be a closed system. It is a question that doesn't specify too many details about the system in the study. It is hard to give a final answer without making some assumptions.
6 0
3 years ago
Read 2 more answers
Other questions:
  • A soda has a volume of 225 ml and a density of 3.2 g/ml. What is the mass
    12·1 answer
  • How many grams of chromium are needed to react with an excess of CuSO4 to produce 27.0g Cu
    12·2 answers
  • A moving magnetic field can produce electricity. true or false ?
    10·2 answers
  • Convert 30°C into kelvin
    7·1 answer
  • Which of these are intensive properties? There can be more than one answer.
    6·1 answer
  •  Explain why the word atom what is an appropriate term of Democritus's idea.
    8·1 answer
  • Which of the following is not an indicator of a chemical reaction?
    13·1 answer
  • How many grams are in 1,000 Lutheran of C2H4
    10·1 answer
  • *<br> Identify the element found in the f-block.<br> Cm<br> K<br> W<br> Br<br> Ag
    12·1 answer
  • Help please it’s worth 20 points
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!