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
docker41 [41]
3 years ago
11

I'd: 9872093250, password: qqqqq, join the meeting​

Chemistry
1 answer:
Sonja [21]3 years ago
4 0
You keep on saying join fast wdym?!
You might be interested in
Density (D) is defined as the ratio of mass (m) to volume (V) and can be determined from the expression D = . Find the density o
olchik [2.2K]

Explanation:

87.329 g/32.32 cm³ = 2. 70 g/cm³

4 0
2 years ago
Determine el PH y el % de disociación de una solución de ácido débil, sabiendo que se disuelven 20 gramos del ácido (masa molar=
IceJOKER [234]

Answer:

pH = 4.27. Porcentaje de disociación: 0.03%

Explanation:

El pH de un ácido débil, HX, se obtiene haciendo uso de su equilibrio:

HX(aq) ⇄ H⁺(aq) + X⁻(aq)

Donde la constante de equilibrio, Ka, es

Ka = 1.65x10⁻⁸ = [H⁺] [X⁻] / [HX]

Como los iones H⁺ y X⁻ vienen del mismo equilibrio podemos decir:

[H⁺] = [X⁻]

[HX] es:

20g * (1mol/55g) = 0.3636moles / 2.100L = 0.1732M

Reemplazando es Ka:

1.65x10⁻⁸ = [H⁺] [H⁺] / [0.1732M]

2.858x10⁻⁹ = [H⁺]²

5.35x10⁻⁵M = [H⁺]

pH = -log[H⁺]

<h3>pH = 4.27</h3>

El porcentaje de disociacion es [X⁻] / [HX] inicial * 100

Reemplazando

5.35x10⁻⁵M / 0.1732M * 100

<h3>0.03%</h3>
5 0
3 years ago
How many seconds are in 5 hours
vfiekz [6]
18000 seconds = 5 hours
8 0
3 years ago
Read 2 more answers
Determine the molarity of a solution with a volume of 435. mL and 0.550 mol of solute dissolved.
lora16 [44]

Answer:

M = 1.26

Explanation:

Molarity = mole of solution/liters of solution
435mL/1000 = .435L
Plugging in the numbers into the formula, we get:
Molarity = .550 mol/.435L = 1.26 M

8 0
2 years ago
7m-11=10 como se acomoda pls ayuda​
Reptile [31]

Answer:

3

Explanation:

7m-11=10

quitar 11 de ambos lados

7m -11+11 = 10+11

7m=21

7/7m=21/7

m=3

3 0
3 years ago
Read 2 more answers
Other questions:
  • The permanganate ion is often used to analyze for iron (II) ion content in aqueous solutions via the reaction: 8H+ + MnO4- + 5 F
    7·1 answer
  • 50 mL of 2M H2SO4 react with 75 mL of 2M NaOH. Identify the limiting and excess reactants
    5·1 answer
  • Please help thank you
    8·1 answer
  • The synthesis of ATP by oxidative phosphorylation, using the energy released by movement of protons across the membrane down the
    12·1 answer
  • Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 18.0 atm. Calculate the work, w , if the gas exp
    13·1 answer
  • Plz!!!!!!!!!!!!!!!!!help!!!!!!!!!!!!!!!!!!!!
    12·1 answer
  • PLSSS ILL MARK YOU AS BRAINLIEST!!!!
    10·1 answer
  • PLEASE HELP QUICK
    11·1 answer
  • How many L of 3.0 M H2SO4 solution can be prepared by using 100.0 mL OF 18 M H2SO4?
    6·1 answer
  • Freezing a candy bar is an example of a physical change. <br> True or false
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!