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
ycow [4]
3 years ago
13

Please help me!!!!

Chemistry
1 answer:
miv72 [106K]3 years ago
7 0

Answer:

0.8g/ml

Explanation:

d=m/v

d=20/25

d=0.8

You might be interested in
The ________ orbital is degenerate with 5py in a many-electron atom.
arsen [322]

The ________ orbital is degenerate with 5py in a many-electron atom.


<h2>5px is the correct answer</h2>
5 0
3 years ago
What part of the food. chain is a pine?
Otrada [13]
Producer. Hope this helps!
7 0
3 years ago
What is the volume of these gases atSTP A-3.20x10^-3mol CO2
pickupchik [31]
I dont know the answer sorry follow me for a follow back
4 0
3 years ago
Can someone tell me how to differentiate if a given salt is acidic, basic, or neutral?​
satela [25.4K]

\bold{\huge{\underline{ Solution }}}

<h3><u>Basic </u><u>Characteristic </u><u>of </u><u>acids </u></h3>

  • Acids are sour in taste
  • Acid turns blue litmus paper or solution into red litmus paper or solution
  • Acids are good conductor of electricity because it dissociate into cation in aqueous solution
  • Acids classified into edible acids and non edible acids. Non edible acids are very hazardous
  • Generally, All acids are soluble in water
  • Acids have PH smaller than 7

<u>Arrhenius </u><u>definition </u><u>of </u><u>acids </u><u>:</u><u>-</u>

According to Arrehinus,

  • Acids are those substances which when dissolve in water given H positive ions . Then, this hydrogen ions combine with water to form H30 + ions

<u>Second </u><u>definition </u><u>of </u><u>Acids </u><u>was </u><u>given </u><u>by </u><u>Bonsted </u><u>Lowry </u><u>:</u><u>-</u>

According to Bonsted Lowry

  • Acids are the proton donors that is when acids dissociate into water gives hydrogen ions that is H+ ions

<u>3rd </u><u>definition </u><u>was </u><u>given </u><u>by </u><u>Lewis </u>

According to Lewis

  • Acids are those substances which have the ability to accept a pair of electrons .

Example of Acids

  • HNO3 :- Nitric acid
  • H2SO4 :- Sulfuric acid
  • HCl :- Hydrochloric acid

<h3><u>Basic </u><u>characterists </u><u>of </u><u>bases </u></h3>

  • Bases are bitter in taste
  • Bases turns red litmus paper into blue litmus paper or solution
  • Bases are also good conductor of electricity because on dissociation it produces anion in aqueous solution
  • Bases are also good conductor of electricity
  • When bases are soluble in water then they are known as alkaline base
  • Bases have PH greater than 7

<u>Arrehinus definition of bases :-</u>

According to Arrehinus ,

  • Bases are those substances which when dissolve in water produce OH negative ions that is hydroxide ions

<u>Bonsted Lowry definition </u>

According to Bonsted Lowry

  • Bases are the proton donors as they produce OH negative ions in dissociation in aqueous solution

<u>Lewis </u><u>definition </u>

According to Lewis

  • Acids are those substances which have the ability to lose electrons that is they are electron donors.

Example of bases

  • Ca(OH)2 :- Calcium hydroxide
  • NaOH :- Sodium hydroxide
  • KOH :- Potassium hydroxide

[ Note :- There are so many Lewis acids and bases but they are not Arrhenius or Lowry acids or bases ]

<h3><u>Basic </u><u>characteristic </u><u>of </u><u>salt </u></h3>

  • Salts are the ionic compounds which are composed of acids and bases that cation and anion
  • Salts are generally found in oceans and seas in the forms of crystals
  • As they are composed of acids and bases so they are neutral in nature but the salt of strong acid or weak base is acidic in nature or vice versa
  • Salts are also good conductor of electricity as they form ionic bond
  • Generally, All salts are soluble in water.
  • The PH of common Salt is 7

Example of salts

  • NH4Cl :- Ammonium chloride
  • CuSO4 :- Copper sulphate
  • NaCl :- Sodium chloride
6 0
2 years ago
Why would scientists change their ideas? *<br> Need help
n200080 [17]

Answer:

If another scientist give better reasons;if they tested their hypothesis and it was wrong; if someone proved whatever the idea was to be wrong

Explanation:

I mean the list can go on at this point

6 0
3 years ago
Read 2 more answers
Other questions:
  • 9. To become like a noble gas the element P will have a charge of
    11·1 answer
  • A cube measures 3.0 cm on each side has a mass of 25g. What is the density of a cube?
    9·1 answer
  • Why do chloride ions move to the positive electrode?
    12·1 answer
  • How do ionic bonds form??
    13·1 answer
  • What was the most likely problem with the first set of
    15·1 answer
  • A solution is made by mixing 500.0 mL of 0.02558 M Na2HAsO4 with 500.0 mL of 0.03961 M NaOH . Complete the mass balance expressi
    12·1 answer
  • 1. When the following oxidation-reduction reaction in acidic solution is balanced, what is the
    6·1 answer
  • How does the radius of the central atom affect the boiling points of Group 16 halides?
    15·1 answer
  • When the water inside a living cell freezes, the ice crystals damage the cell. The wood frog is a unique creature that can survi
    6·1 answer
  • A student is investigating acceleration using balls with
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!