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
dybincka [34]
2 years ago
9

What would be the definition of chemical indicators?​

Chemistry
1 answer:
Gwar [14]2 years ago
5 0

Answer:

Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

Explanation:

You might be interested in
How many moles are in 3.00x 10^22 atoms of He?
sp2606 [1]

Answer:

<h2>0.05 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.0 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.049833...

We have the final answer as

<h3>0.05 moles</h3>

Hope this helps you

3 0
3 years ago
For the balanced chemical reaction
musickatia [10]

Answer:

150

Explanation:

  • C₄H₂OH + 6O2 → 4CO2 + 5H₂O

We can <u>find the equivalent number of O₂ molecules for 100 molecules of CO₂</u> using a <em>conversion factor containing the stoichiometric coefficients of the balanced reaction</em>, as follows:

  • 100 molecules CO₂ * \frac{6moleculesO_2}{4moleculesCO_2} = 150 molecules O₂

150 molecules of O₂ would produce 100 molecules of CO₂.

5 0
2 years ago
an unknown molecule is found to consist of 24.2% carbon by mass, 4.0% hydrogen by mass and the remaining mass is due to chlorine
Paha777 [63]

Answer:

C3 H6 Cl 3

Explanation:

C -24.2%

H -  4.0%

Cl - (100-24.2 - 4.0)=73.8 %

We can take 100g of the substance, then we have

C -24.2 g

H -  4.0 g

Cl - 73.8 g

Find the moles of these elements

C -24.2 g/12.0 g/mol =2.0 mol

H -  4.0 g/1.0 g/mol = 4. 0 mol

Cl - 73.8 g/ 35.5 g/mol = 2.1 mol

Ratio of these elements gives simplest formula of the substance

C : H : Cl = 2 : 4 : 2 = 1 : 2 : 1

CH2Cl

Molar mass (CH2Cl) = 1*12.0 +2*1.0 + 1*35.5 = 49.5 g/mol

Real molar mass = 150  g/mol

real molar mass/ Molar mass (CH2Cl) = 150 /49.5=3

So, Real formula should be C3 H6 Cl 3.

4 0
3 years ago
Read 2 more answers
Please help-<br> thank you-
Flauer [41]
Dang that’s crazy.. Goodluck ..
4 0
2 years ago
Read 2 more answers
When will a seed begin to germinate?
Vlada [557]
When it has sunlight and water
4 0
3 years ago
Read 2 more answers
Other questions:
  • When reacting a solution of the following secondary hydroxyl amine with 2-butene under very high temperatures, the desired produ
    10·1 answer
  • WRITE INCOMPLETE COMBUSTION OF ETHANE
    7·1 answer
  • Carbon monoxide (CO) detectors sound an alarm when peak levels of carbon monoxide reach 100 parts per million (ppm). This level
    5·1 answer
  • Bromine is the only nonmetal that is a liquid at room temperature. consider the isotope bromine-81, . select the combination whi
    13·1 answer
  • Which would you expect sound to have the greatest speed, 20liter container with 5000 molecules or the 20 liter container with 10
    10·1 answer
  • What is the correct name for this formula: AI2O3?
    5·1 answer
  • An unknown acid has a hydronium ion concentration of 0.00352. what is its ph
    13·1 answer
  • What is the mass of one mole of calcium carbonate
    5·2 answers
  • The aqueous equilibrium reaction below would not be affected by
    5·1 answer
  • What type of combustion will happen in a bunsen burner when the flame is yellow
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!