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
aksik [14]
2 years ago
11

Substances, such as litmus paper or red cabbage juice, that turn color based on the pH of the solution are called ___.

Chemistry
1 answer:
bekas [8.4K]2 years ago
4 0

Answer:

soluteswws

Explanation:

You might be interested in
Convert 0.74Kcal/min to cal/sec
professor190 [17]
<span>0.74 Kcal/min x 1000 cal/60 s         


</span>
6 0
3 years ago
You operate a nuclear reactors and want to use fissionable mass that will sustain a slow control what type of mass will you use
puteri [66]

Answer: I believe it is critical mass

Explanation:

3 0
2 years ago
Calculate the molar solubility of CaF2 in a 0.25 m solution of NaF(aq).
Kipish [7]

Answer:

6.4 × 10^-10 M

Explanation:

The molar solubility of the ions in a compound can be calculated from the Ksp (solubility constant).

CaF2 will dissociate as follows:

CaF2 ⇌Ca2+ + 2F-

1 mole of Calcium ion (x)

2 moles of fluorine ion (2x)

NaF will also dissociate as follows:

NaF ⇌ Na+ + F-

Where Na+ = 0.25M

F- = 0.25M

The total concentration of fluoride ion in the solution is (2x + 0.25M), however, due to common ion effect i.e. 2x<0.25, 2x can be neglected. This means that concentration of fluoride ion will be 0.25M

Ksp = {Ca2+}{F-}^2

Ksp = {x}{0.25}^2

4.0 × 10^-11 = 0.25^2 × x

4.0 × 10^-11 = 0.0625x

x = 4.0 × 10^-11 ÷ 6.25 × 10^-2

x = 4/6.25 × 10^ (-11+2)

x = 0.64 × 10^-9

x = 6.4 × 10^-10

Therefore, the molar solubility of CaF2 in NaF solution is 6.4 × 10^-10M

8 0
3 years ago
What is the similarity between teeth and eggshells?
topjm [15]

Explanation:

Because they share a similar composition, similar chemicals affect their structures in positive or negative ways. For example, fluoride – a staple in many dental practices – strengthens both enamel and eggshells and helps protect them from acids. Acids weaken and break down both substances. Scientists find this particularly concerning given that the ocean is growing increasingly acidic. They fear this may weaken the eggs of some marine species and harm their chance of survival. Most dentists recommend limiting aggressively acidic foods and beverages such as soft drinks.

3 0
3 years ago
Read 2 more answers
Which of the following energy does NOT travel as a wave?
frosja888 [35]

Answer:

Wind

Explanation:

It's impossible for them to travel in a wave.

3 0
3 years ago
Other questions:
  • Question 4 what is the term for a group of atoms held together by covalent bonds that bears an overall negative or positive char
    13·1 answer
  • Which ion has the same electron configuration as an atom of He?
    5·2 answers
  • The acidic substance in vinegar is acetic acid, HC2H3O2. When 4.00 g of a certain vinegar sample was titrated with 0.200 M NaOH,
    8·1 answer
  • if a 2.0g sample of water at 5.0celcius absorbs 21.8Joules of energy, the temprature of the sample will be raised by
    9·1 answer
  • Explain the similarities and differences between a 1M solution of NaOH and a 1m solution of NaOH
    14·1 answer
  • When the molecules of a gas hit each other do they normally stick or bounce off
    5·2 answers
  • I need help with this.
    11·2 answers
  • How many molecules of CO2 at standard temperature and pressure in 5.4 moles of CO2
    13·1 answer
  • 2Li+2H2O—&gt;2LiOH+H2
    10·1 answer
  • Unlike plants, humans cannot make their own food. Where do most humans get energy to live, breathe, and grow? (2 points)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!