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
nalin [4]
3 years ago
14

Is mixing salt and pepper physical change or chemical change ?

Chemistry
1 answer:
Rom4ik [11]3 years ago
6 0
Yes mixing salt with pepper change
You might be interested in
Number of electrons present in 10th shell of<br> an atom
stellarik [79]

Answer:

there will be 8 electrons

3 0
3 years ago
What volume of O2 is required to react with CS2 to produce 4 liters of CO2?
Alenkasestr [34]

Answer:

12 L of O₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

CS₂ + 3O₂ —> CO₂ + 2SO₂

From the balanced equation above,

3 L of O₂ reacted to produce 1 L of CO₂.

Finally, we shall determine the volume of O₂ required to produce 4 L of CO₂. This can be obtained as follow:

From the balanced equation above,

3 L of O₂ reacted to produce 1 L of CO₂.

Therefore, xL of O₂ will react to produce 4 L of CO₂ i.e

xL of O₂ = 3 × 4

xL of O₂ = 12 L

Thus, 12 L of O₂ is needed for the reaction.

3 0
3 years ago
Some fuel cells are powered by hydrogen. Scientists are looking into the decomposition of water (H2O) to make hydrogen fuel with
skad [1K]

Here we have to choose the challenge which is faced by the scientist to make a hydrogen fuel cell by using water.

The challenge that the scientists are facing a. decomposition of water requires a high energy.

For the generation of fuel cells by hydrogen the use of water (H₂O) is a challenging task as the H-O bond in  water is so strong and need high activation energy.

As per the mechanism of hydrogen fuel cell generation of H₂ is compulsory. Water remains in its solution as H₂O⇔H⁺ + OH⁻. The breaking of hydroxide ion (OH⁻) to form free hydrogen need a high energy, which cannot meet easily by any energy source.

The sun is always a renewable energy source as the energy of sun is infinitive.

The decomposition of water will only produce oxygen (O₂) and hydrogen (H₂) among which H₂ will be used in the fuel cell and O₂ is not at all harmful.

The excess O₂ is always good for the environment as it is the breathing source in the living system.

5 0
3 years ago
What process takes place in this powerhouse of the animal cell? don't confuse this with breathing.
Harrizon [31]
What happens in the mitochondria is a chain of many coupled red-ox reaction. In the respiratory chain, so called reduction aequivallents (NADH, FADH2) get oxidized by giving the energetic electrons obtained from sugars/fats during the glycolysis and the citric acid cycle to different carriers(they get reduced). This leads to the establishing of a proton gradient in the intermembrane space of the mitochondria.
A really important redox reaction is the reduction of O2 to H2O, where ADT and phosphate are joined to generate ATP. 
Sorry if the description isn't exactly chemically correct, it is certainly biologically right :)
7 0
3 years ago
What is the equation if the product is CaOH+(aq)?
zavuch27 [327]
The product is called carbon monohydroxide (CaOH+) ion. This is the only product if the solution is alkaline. The reactants are calcium (Ca2+) and hydroxide (OH-) ions. If the solution is acidic, hydrogen (H+) ion is also included in the product side of the equation.

Ca2+(aq) + OH-(aq) -> CaOH+(aq)
7 0
3 years ago
Other questions:
  • If it takes 38.70cm³ of 1.90 M NaOH to neutralize 10.30cm³ of H2SO4 in a battery, What's the Molarity of the H2SO4 ?​
    15·2 answers
  • Why are the Flemish called Flemish
    12·1 answer
  • If a radioactive material has a 10 year half-life, how much of a 100 g sample will be left after 30 years?
    11·1 answer
  • I NEED HELP I WILL RATE BRAINLIEST!!!!
    15·1 answer
  • Most reactions speed up when
    8·2 answers
  • The process of converting a liquid into a solid is called (4 points)
    10·2 answers
  • Every conversion factor is a ratio that is<br> equal to 1<br> less than 1<br> greater than 1
    12·1 answer
  • 5. Geothermal energy
    9·2 answers
  • A compound has a molar mass of 100 g/mol and the percent composition (by mass) of 65.45% C, 5.45% H, and 29.09% 0. Determine the
    11·1 answer
  • Which type of substance can separated using a centrifuge?<br>​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!