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
neonofarm [45]
3 years ago
8

Assuming the final solution will be diluted to 1.00 l , how much more hcl should you add to achieve the desired ph?

Chemistry
1 answer:
solong [7]3 years ago
4 0
H = 2.7, therefore amount of H+ needed is 10^-2.7 M 

<span>u haf 80 ml of hcl and 90 ml of naoh left, therefore 20 ml of hcl used, and 10ml of naoh used. </span>

<span>mols of H+ = 0.02 x 7 x 10^-2 = 1.4 x 10^-3 </span>
<span>mols of OH- = 0.01 x 5 x 10^-2 = 5 x 10^-4 </span>

<span>H+ and OH- neutralise each other, so remaining mols of H+ = 9 x 10^-4 </span>

<span>u need 10^-2.7 mols of H+, so 10^-2.7 - 9 x 10^-4 = 0.001095 mol </span>

<span>vol of HCL needed = 0.001095 / 7 x 10^-2 = 0.0156 L = 15.6 mL</span>
You might be interested in
explain why the hydrogen atoms in a hydrogen gas molecule form nonpolar covalent bonds but oxygen and hydrogen atoms in water mo
marishachu [46]

Answer:

Explanation:

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.  

The atom with larger electronegativity attract the electron pair more towards itself and becomes partial negative while the other atom becomes partial positive.

Non polar covalent bond:

It is the bond where both bonded atoms share the pair of electron equally.

For example:

Hydrogen gas (H₂) is non polar covalent compound because the electronegativity of both bonded atoms are same. No poles are created that's why this is non polar covalent compound.

Polar covalent bond:

It is the bond where both bonded atoms share the pair of electron unequally.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive and bond is polar.

7 0
3 years ago
What is the most likely reason a computer model is used for a black hole?
Rashid [163]

Answer:

Black holes are merely the most exotic example of the general principle that ... quantum computer stores bits on protons and uses magnetic fields to flip them. ... Powered by Standard Model software, the universe computes

Explanation:because they are mostly exotic

6 0
3 years ago
A catalyst is used in the chemical reaction to break down hydrogen peroxide into water and oxygen. At the end of the reaction, t
Natasha_Volkova [10]
At the end of the reaction, the catalyst is UNCHANGED.
:)
8 0
3 years ago
Iron Choose one: A. is alloyed with carbon and chromium to make stainless steel. B. was the first of the common metals (iron, al
Lostsunrise [7]

Answer:

A. is alloyed with carbon and chromium to make stainless steel.

Explanation:

Steel is an alloy formed mainly of iron and carbon but some other metals like chromium are also added in little amounts.

Is steel, the percentage of iron and carbon together is about 90% and the rest metals fall in the 10% part.

Although the cost of steel is low, it has a very high tensile strength and that's why it is used in tools, ships, buildings, trains and in various types of infrastructures.

7 0
3 years ago
Help me, it’s pretty easy science moon stuff !
trasher [3.6K]
Hello :)
Based on the information I received reading the picture, the answer should be “B”

Explanation: if I am wrong I’m very sorry. But that should be the answer
8 0
2 years ago
Read 2 more answers
Other questions:
  • What causes a zip line rider movie?
    7·1 answer
  • Predict the effect of a mutation which limits the production of pigment in hair
    5·1 answer
  • Identify the principal role of photosynthesis. to convert kinetic energy into the chemical energy of sugars to convert solar ene
    14·1 answer
  • When two molecules of methanol (CH3OH) react with oxygen, they combine with three O2 molecules to form two CO2 molecules and fou
    10·1 answer
  • How many g of N in 2.76 g Al(NO3)3
    8·1 answer
  • Study the picture below. What does arrow F represent?
    8·1 answer
  • Insects interact with other living organisms carrying pollen and diseases true or false
    6·1 answer
  • How are the scientific method and the engineering method similar?
    5·1 answer
  • The inflation of airbags is due to the breakdown of a single chemical substance into two separate substances. Two molecules of s
    7·1 answer
  • During a lab exam a student looked through the microscope and identified the following cell parts: circular DNA, ribosomes, cell
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!