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
ICE Princess25 [194]
3 years ago
7

PLLEEEEEESE help idk where to look for answers

Chemistry
1 answer:
marin [14]3 years ago
7 0

Answer:

1. chemical  name: Sucrose

Explanation:

the chemical´s element amount is 3

You might be interested in
Which of these is a chemical property of a substance?
denis-greek [22]
Flammability
Hope it helps!
6 0
3 years ago
To understand the relation between the strength of an acid or a base and its pKa and pKb values. The degree to which a weak acid
elena-14-01-66 [18.8K]

Answer:

pKa = 3.675

Explanation:

  • pKa = - Log Ka

∴ <em>C</em> X-281 = 0.079 M

∴ pH = 2.40

let X-281 a weak acid ( HA ):

∴ HA ↔ H+ + A-

⇒ Ka = [H+] * [A-] / [HA]

mass balance:

⇒<em> C</em> HA = 0.079 M = [HA] + [A-]

⇒ [HA] = 0.079 - [A-]

charge balance:

⇒ [H+] = [A-] + [OH-]... [OH-] is negligible; it comes from to water

⇒ [H+] = [A-]

∴ pH = - log [H+] = 2.40

⇒ [H+] = 3.981 E-3 M

replacing in Ka:

⇒ Ka = [H+]² / ( 0.079 - [H+] )

⇒ Ka = ( 3.981 E-3 )² / ( 0.079 - 3.981 E-3 )

⇒ Ka = 2.113 E-4

⇒ pKa = - Log ( 2.113 E-4 )

⇒ pKa = 3.675

8 0
3 years ago
Determine the total net force and the direction of movement for the situation.
k0ka [10]

Answer:

well it can be 11 or 16n

Explanation:

6 0
2 years ago
The temperature at which the vapor pressure of a liquid is equal to the external pressure is called the _____ point.
jeyben [28]
It is B. Boiling point
4 0
3 years ago
3. If a gas has a pressure of 32.1 psi at a temperature of 25°C, then what is the new pressure if the temperature is increased t
mihalych1998 [28]

Answer:

baho kag bilat sige ka ug palubut

Explanation:

sige ka ug eyut

6 0
2 years ago
Other questions:
  • Select the correct answer.
    11·1 answer
  • The particles of a suspension are dissolved into the solvent true or false
    13·1 answer
  • PLEASEE HELPP MEEE WITH NUMBER 5!!!!!!<br> please explain why!!!!
    8·1 answer
  • What volume would a sample of gas occupy in LITERS at 0.985 atmospheres and a volume of 3.65 liters if the pressure were raised
    7·1 answer
  • Adi loves the smell of lavender, so she decides to press a few petals of the flower until they release a few drops of oil. She w
    11·1 answer
  • The pH of an unknown strong acid is 2. What<br> is the hydronium ion concentration?
    7·1 answer
  • .Which best describes the structure of 2-butene?
    13·1 answer
  • As the amount of charge on two objects increases, the strength of the electrical force between the objects
    10·2 answers
  • What does pathological tissue growth mean? and add another word that means the same thing but not bigger need help pleases don't
    5·1 answer
  • Commercial products commonly report concentration in terms of "percentage." Using this
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!