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
viva [34]
2 years ago
8

Out of the 3 of these

Chemistry
1 answer:
Delvig [45]2 years ago
6 0
Electrons can be transformed from on object to another , (can you mark me brainlyest)
You might be interested in
Unscramble dreor to get a science answer
lesantik [10]
Order. 
Hope this helps! :)
5 0
3 years ago
Read 2 more answers
Which of these substances is the least acidic? solution A, pOH = 1.5 solution B, pOH = 7.0 solution C, pOH = 13.5Which of these
Usimov [2.4K]

Answer: solution A, pOH =1.5

Explanation:

3 0
3 years ago
Read 2 more answers
A student was given the task of titrating a 20.mL sample of 0.10MHCl(aq) with 0.10MNaOH(aq) . The HCl(aq) was placed in an Erlen
gregori [183]

Answer:

Here's what I get  

Step-by-step Explanation

(a) Effect of dilution

There will be no effect on the volume of NaOH needed.

The amount of HCl will be halved, so the amount of NaOH will be halved.

However, the concentration of NaOH is also halved, so you will need twice the volume.

You will be back to the same volume as before dilution.

(b) Net ionic equation

Molecular: HCl(aq)+NaOH(aq)→NaCl(aq)+H2O(l)

Ionic: H⁺(aq) + Cl⁻(aq) + Na⁺(aq) + OH⁻(aq) ⟶ Na⁺(aq) + Cl⁻(aq) + H₂O(l)

Net ionic: H⁺(aq) + OH⁻(aq) ⟶ H₂O(l)

(c) Proton acceptor

H⁺ is the proton. OH⁻ accepts the proton and forms water.

(d) Moles of HCl

\text{Moles of HCl} = \text{20. mL HCl} \times \dfrac{\text{0.10 mmol HCl}}{\text{1 mL HCl}} = \text{2.0 mmol HCl} =  \textbf{0.0020 mol HCl}

(e) Equivalence point

The equivalence point is the point at which the titration curve intersects the pH 7 line.

(f) Schematic representation

Assume the box for 0.10 mol·L⁻¹ HCl contains four black dots (H⁺) and four open circles (Cl⁻).

The 0.20 mol·L⁻¹ solution is twice as concentrated.

It will contain eight black dots and eight open circles.

5 0
3 years ago
g 304 mL of a 0.36 M potassium hydroxide solution is added to 341 mL of a 0.51 M lithium hydroxide solution. Calculate the pOH o
Liono4ka [1.6K]

Answer:

<u><em></em></u>

  • <u><em>pOH = 0.36</em></u>

Explanation:

Both <em>potassium hydroxide</em> and <em>lithium hydroxide </em>solutions are strong bases, so you assume 100% dissociation.

<u>1. Potassium hydroxide solution, KOH</u>

  • Volume, V = 304 mL = 0.304 liter
  • Molarity, M = 0.36 M
  • number of moles, n = M × V = 0.36M × 0.304 liter = 0.10944 mol
  • 1 mole of KOH produces 1 mol of OH⁻ ion, thus the number of moles of OH⁻ is 0.10944

<u>2. LIthium hydroxide, LiOH</u>

  • Volume, V = 341 mL = 0.341 liter
  • Molarity, M = 0.51 M
  • number of moles, n = M × V = 0.341 liter × 0.51 M = 0.17391 mol
  • 1mole of LiOH produces 1 mol of OH⁻ ion, thus the number of moles of OH⁻ is 0.17391

<u />

<u>3. Resulting solution</u>

  • Number of moles of OH⁻ ions = 0.10944 mol + 0.17391 mol = 0.28335 mol

  • Volume of solution = 0.304 liter + 0.341 liter = 0.645 liter

  • Molar concentration = 0.28335 mol / 0.645 liter = 0.4393 M

<u />

<u>4. </u><em><u>pOH</u></em>

      pOH=-\log [OH^-]=-\log (0.439)=0.36   ← answer

5 0
3 years ago
1or the question.<br> 3. What's the requirement of every single<br> natural process on Earth?
Dmitry_Shevchenko [17]
Sunlight is the requirement of every single natural process on Earth.
6 0
3 years ago
Other questions:
  • Coffee is a solution of organic substances in water
    13·1 answer
  • The phase that is most likely to occur at high temperatures and high pressures is:
    13·1 answer
  • If an object is accelerating the forces acting on the object are ?​
    13·1 answer
  • What would the percentage of thorium-232 (parent compound) be in a rock that was dated at 2.8 billions years?
    9·1 answer
  • Why is photosynthesis an example of chemical change, and why is it classified as endothermic?
    6·1 answer
  • a compound with the empirical formula CH2 has a molar mass of 112 g/mol. What is the molecular formula for this compound?
    15·1 answer
  • If aluminum has a mass of 22.3 g, how many liters of oxygen gas are required at STP?
    13·1 answer
  • When solid water changes directly to water vapor without first becoming a liquid, the process is called?
    14·1 answer
  • How many grams in 4.5 moles of H2O?
    7·1 answer
  • Does the physical form of the material matter for mass-mole<br> and mole-mass calculations?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!