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
rjkz [21]
1 year ago
6

25.0cm3 of 0.10M sodium hydroxide solution is exactly neutralised by

Chemistry
1 answer:
Sergio [31]1 year ago
8 0

Answer:

25.00 cm 3 of 0.100 mol/dm 3 sodium hydroxide solution is exactly neutralised by 0.125 mol/dm 3 hydrochloric acid.

your answer is B

You might be interested in
The combustion of toluene has a δerxn of −3.91 × 103kj/mol. when 1.55 g of toluene (c7h8) undergoes combustion in a bomb calorim
maw [93]

Answer: The heat capacity of the bomb calorimeter is 2.84 kJ/g^oC.

Explanation:

\Delta H_{reaction}=-3.91\times 10^3 kJ/mol=-3.91\times 10^6 J/mol(1kJ=1000J)

Given mass of toluene = 1.55 g

Number of moles of Toluene:

=\frac{\text{Given mass of toluene}}{\text{Molecular mass of toluene}}=\frac{1.55}{92.14 g/mol}=0.0168 moles

Energy required by 0.0168 moles of toluene=\Delta H_{reaction}\times 0.0168 moles=-3.91\times 10^6 J/mol\times 0.0168 mol=-0.065688\times 10^6 J

Since heat released on combustion of 0.0168 moles toluene, this heat will get absorbed by the bomb calorimeter ,then (Q) will be:

Q=0.065688\times 10^6 J

\Delta T= 37.92^oC-23.02^oC=14.9^oC

Q=mc\Delta T=0.065688\times 10^6 J=1.55 g\times c \times (14.9^oC)

c=2.84\times 10^3 J/g^oC=2.84 kJ/g^oC

The heat capacity of the bomb calorimeter is 2.84 kJ/g^oC.

8 0
3 years ago
Vectors are arrows that tell us two things about force...WEIGHT and DIRECTION
lorasvet [3.4K]
False, from what i know vectors tell us about direction and magnitude. not weight and direction
6 0
2 years ago
Read 2 more answers
Are substances that taste bitter and feel slippery to the skin
frez [133]

Answer:

Explanation:

  • Bases are the substances which have a bitter taste and feel slippery.
  • Sulfuric acid is the most widely made industrial chemical in the world. It is used to make many products, including paper, paint, detergents, and fertilizers. Car batteries contain sulfuric acid. Feel The properties of a base solution include a bitter taste and a slippery feel.
4 0
3 years ago
What happens to the freezing temperature of a solvent when a
Ostrovityanka [42]

Answer:it decreases

Explanation:

4 0
2 years ago
Please help with this question!
Alex17521 [72]

Answer:

A) potential energy is stored energy. Kenetic energy is energy of motion.

6 0
2 years ago
Other questions:
  • Which correctly describes the laws of conservation?
    13·1 answer
  • What is the actual amount of phosphorous in a fertilizer with a NPK ratio of 15-15-20?
    12·1 answer
  • What is the percent yield of hbr if 85.00 g of hbr was formed from 30. g of h2?
    14·2 answers
  • What kind of reaction is decribed by the following chemical
    8·1 answer
  • Consider the reaction below. Mg(s) + 2HCl(aq) mc019-1.jpg H2(g) + MgCl2(aq) What is the most likely effect of an increase in pre
    13·2 answers
  • Although cannabinol and methyl alcohol are both alcohols, cannabinol is very slightly soluble in methyl alcohol at room temperat
    12·2 answers
  • 8.
    7·1 answer
  • A 390 mL solutions of 4.6 M HCl is left out over the weekend and 74 mL of solvent evaporates. What is the new concentration of H
    14·1 answer
  • How many grams of NaN3 are required to produce 283 L of nitrogen gas about the size of an automotive air bag, if the gas has a d
    5·1 answer
  • Not yet answered Points possible: 1.00 The equivalence point of any acid-base titration can be determined visually from a titrat
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!