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
zhuklara [117]
3 years ago
10

Which property of a substance can be determined using pH indicator

Chemistry
2 answers:
Nezavi [6.7K]3 years ago
8 0

the answer is a hope that helped


Vitek1552 [10]3 years ago
4 0
A) Acidity
pH indicator tells you the level of either acid or base in a certain substance. 
You might be interested in
In this reaction, the chromium is reduced, from Cr6+ to Cr3+, causing a color change in the solution, signaling the endpoint. De
Travka [436]

Answer:

Using the information provided in the question, the percentage by mass of ethanol in the blood is 0.1949%.

Explanation:

The balanced equation for the reaction can be written as:

3CH3CH2OH + 2K2Cr2O7+ 16H+ >>>> 3CH3COOH + 4Cr3+ + 4K+ + 11H2O. This will be used to solve the problem.

The no of moles of K2Cr2O7 used = concentration X volume in dm cube.

= 0.05 X 22.6/1000 = 1.13/1000 = 0.00113 moles of K2Cr2O7 was used.

From the balanced equation above, 3 moles of ethanol will react with 2 moles of K2Cr2O7.

Therefore, 0.00113 X 3/2 moles of ethanol would have been in the blood of the subject = 0.001695 moles of ethanol.

Remember that no of moles = mass/molar mass. Then mass = moles X molar mass.

The molar mass of ethanol is 46g/mole.

Then mass = 0.001695 X 46 = 0.07797gram of Ethanol was in the blood.

Percentage by mass in blood is: 0.07797/40 X 100 = 0.1949%

8 0
3 years ago
Calculate the number of moles of NaOH contained in 250. mL of a 0.05M solution.
steposvetlana [31]

Answer:

0.0125mol

Explanation:

Molarity (M) = number of moles (n) ÷ volume (V)

n = Molarity × Volume

According to this question, a 0.05M solution contains 250 mL of NaOH. The volume in litres is as follows:

1000mL = 1L

250mL = 250/1000

= 0.250L

n = 0.05 × 0.250

n = 0.0125

The number of moles of NaOH is 0.0125mol.

3 0
3 years ago
A scientist performs a cutting-edge experiment with exciting results. What
algol [13]

Answer:

B

Explanation:

It's B because the first trial of an experiment may not always be right so you want to run multiple trials

4 0
3 years ago
What is strong acid and weak acid​
Sindrei [870]

Answer:

the strongest is fluoroantimonic acid and the weakest is hydrocyanic acid

8 0
3 years ago
In which type of chemical reaction do two or more reactants combine to form one product, only?
xenn [34]
In decomposition, two or more reactant combine to form one product only.
8 0
3 years ago
Other questions:
  • When hydrogen burns, water vapor is produced. the equation is 2h2(g) + o2(g) → 2h2o(g). if 12 l of oxygen are consumed at stp, w
    13·1 answer
  • True or False
    7·2 answers
  • How many grams of NO are produced from 15.8 g of H2O
    5·1 answer
  • How many molecules of hydrogen dioxide are in 8.54 moles of hydrogen dioxide? I think that is what H and O are, but it wasn't le
    10·1 answer
  • A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to 200 ml of water. The final ph is measured t
    12·1 answer
  • Circle the element with the LOWER IONIZATION ENERGY.
    6·1 answer
  • URGENT - This is not really specific but I have a chemistry test really soon and I still don't understand how to balance chemica
    15·1 answer
  • 2. How do the ancient Greek model and Ptolemy's model differ?
    10·2 answers
  • Which of the following describes a chemical reaction?
    7·1 answer
  • How many grams are in 3.4 moles of Lead (IV) Sulfate (Pb(SO4)2)? ) Molar mass: 303.26 g/mol 131.0840​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!