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
Alborosie
3 years ago
6

A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of

phenolphthalein are added. The above sodium hydroxide solution (the titrant) is used to titrate the nitric acid solution (the analyte). If 12.75 mL of the titrant is dispensed from a burette in causing a color change of the phenolphthalein, what is the molar concentration of the nitric acid solution? (Show all steps for calculating the answer.)
Answer: 0.0611 M HNO3​
Chemistry
1 answer:
Semenov [28]3 years ago
7 0

Answer:

0.0611M of HNO3

Explanation:

<em>The concentration of the NaOH solution must be 0.1198M</em>

<em />

The reaction of NaOH with HNO3 is:

NaOH + HNO3 → NaNO3 + H2O

<em>1 mole of NaOH reacts per mole of HNO3.</em>

That means the moles of NaOH used in the titration are equal to moles of HNO3.

<em>Moles HNO3:</em>

12.75mL = 0.01275L * (0.1198mol / L) = 0.0015274 moles NaOH = Moles HNO3.

In 25.00mL = 0.025L -The volume of the aliquot-:

0.00153 moles HNO3 / 0.025L =

<h3> 0.0611M of HNO3</h3>
You might be interested in
Which compound is made from metals and non metals​
Grace [21]
It’s -> Ionic compound
3 0
3 years ago
The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm. What is this distance in inche
Sergio [31]

Answer:

d=4.75\times 10^{-9}\ \text{inches}

Explanation:

Given that,

The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21\times 10^{-8}\ cm.

We need to convert this distance in inches.

We know that,

1 cm = 0.393 inches

We can solve it as follows :

1.21\times 10^{-8}\ cm=0.393\times 1.21\times 10^{-8}\\\\=4.75\times 10^{-9}\ \text{inches}

So, the distance between the centers of the two oxygen atoms is 4.75\times 10^{-9}\ \text{inches}.

5 0
3 years ago
What are the different areas of an electron cloud called?
max2010maxim [7]
I believe they are called Energy Levels or Energy Orbitals.
5 0
3 years ago
1. Describe the difference between an electron and a proton in terms of their charge.​
Zarrin [17]

Explanation:

Protons have a positive charge. Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.

5 0
2 years ago
Which of these is not a gas? hydrogen, oxygen, gravity, or helium
katrin2010 [14]

Answer:

I think that Gravity is not considered a gas but it can at the same time

Explanation:

Gasses are affected by gravity, as above video will prove. ... Yes, there is a attractive force between the gas molecules and gravity !

The rest are for sure gases

8 0
3 years ago
Read 2 more answers
Other questions:
  • Question 8 1.2 pts an atom of bromine has a mass about four times greater than that of an atom of neon. which choice makes the c
    5·1 answer
  • After balancing the equation, what would be the coefficient for water? <br> __NH3+__O2=__NO+H2O
    12·1 answer
  • The unstable arrangement of atoms that forms momentarily at the peak of the activation-energy barrier is known as the _____. com
    7·2 answers
  • Ultimately, all scientific knowledge comes from A.experimentation B.observation C.textbooks D.both experimentation &amp; observa
    12·2 answers
  • 32g of sulfur will react with48g of oxygen to produce 80g of sulfur trioxide. If 16g of sulfur and 100g of oxygen are placed int
    5·1 answer
  • How does Bohr’s model of the atom compare with Thomson’s model?
    7·2 answers
  • Does ecstasy drug effect how long you live?
    5·1 answer
  • Using the perioduc table determine the mass of one mole in the element carbon​
    14·1 answer
  • Which Reference Tables must be used to determine the number of carbon atoms in a parent chain and the type of bonding between th
    10·1 answer
  • What is the job of an environmental engineer?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!