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
creativ13 [48]
3 years ago
14

(WILL GIVE BRAINLIEST IF YOU ANSWER ALL 4) Chemistry

Chemistry
1 answer:
Kitty [74]3 years ago
5 0

Answer:

See explanations

Explanation:

a. Molarity = moles/Volume in Liters = 5moles/2Liters = 2.5M in NaCl

b. Freezing Pt Depression

     1. Sprinkling salt on icy surfaces

    2. Using antifreeze in automobile cooling systems

    3. <em>Not an application </em>

    4. Using salt to make ice cream

c. pOH = -log[OHˉ] = -log(1x10ˉ¹⁰) = -(-10) = 10 => pH = 14 – pOH = 14 – 10 = 4

d. H₂O + NH₃ => NH₄⁺ + OHˉ => Bronsted Acid is H₂O  (proton donor)

You might be interested in
In a mixture of carbon dioxide in water ( a soft drink ) the Carbon Dioxide is the solute
Nataly [62]

Answer:

true :)

Explanation:

hope this helps :)

4 0
3 years ago
A submarine changes its mass by adding or removing seawater from tanks inside the sub. Explain how this can enable the sub to di
bogdanovich [222]
Less water = less weight to make it rise
More water = more weight to make it dive
3 0
3 years ago
Describe how the meniscus is used to read volume measurements on a graduated cylinder
katrin2010 [14]

Answer:Tthe liquid in a graduated cylinder curves up at the edge where the liquid meets the wall of the cylinder. This curve in the liquid is called the meniscus and is used to determiine the volume of liquid in a graduated cylinder by observing the measurement tick closest to the bottom of the meniscus.

Explanation:

Hope it helps :D

4 0
2 years ago
Read 2 more answers
What energy is using the telephone?
kakasveta [241]

Answer:

electrical

Explanation:

i kinda guessed.

4 0
3 years ago
Read 2 more answers
9- Which pair of formulae represents two alkanes? (1 mark)
Ksenya-84 [330]

Answer:

A) CH4 and C8H18

Explanation:

  • General Formula for an Alkane = CnH2n+2

  • This means for every number of Carbon (C) atoms, there are twice as many Hydrogen (H) atoms with an additional two added onto that.

  • Therefore, if there is one Carbon Atom, and we multiply that by two, and then add an additional two, we get 4 Hydrogen atoms, so CH4, which is our first Formulae

  • Secondly, if we have eight Carbon Atoms, and we multiple that by two (16), and then add an additional two, we get 18 Hydrogen atoms, so C8H18, which is our second Formulae

  • The other Formulas do not follow this 'General Formula'
8 0
2 years ago
Other questions:
  • What factors does the gravitational potential energy of an object depend on
    7·2 answers
  • Most ionic compounds tend to be classified as Select one:
    12·2 answers
  • Which one is correct
    11·2 answers
  • Match the following terms with their definitions:
    11·2 answers
  • The two pieces of clothing have ____ charges and they _____ each other.
    11·2 answers
  • List three of Rutherford’s major achievements that helped earn him the title “Father of Nuclear Physics.”
    8·2 answers
  • Im so alone and i really need friends and maybe more pls dont delete my quiestion
    13·1 answer
  • True or false : Electrons only move when heated.
    15·2 answers
  • Find the molarity of a solution made by dissolving 12.5 g sodium carbonate in 500.0 mL total solution
    15·1 answer
  • The 225 g FeCl2 is about 1.8 moles.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!