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
padilas [110]
3 years ago
10

6) Determine la concentración de una solución que ha sido preparada añadiendo 80cc de agua a 320cc de solución alcohólica al 20%

v/v. Valor: 3 puntos
Chemistry
1 answer:
Xelga [282]3 years ago
3 0

Answer:

16% v/v es la nueva concentración de alcohol en la solución

Explanation:

El porcentaje volumen/volumen (% v/v) es definido como 100 veces la relación entre el volumen de soluto (Alcohol en este caso) y el volumen total de la solución (Agua + Alcohol). Para resolver esta pregunta necesitamos hallar el volumen de alcohol y el de agua:

<em>Volumen alcohol:</em>

320cc * (20cc etanol / 100cc) = 64cc etanol

<em>Volumen agua:</em>

80cc + (320cc-64cc) = 336cc agua

<em>% v/v:</em>

64cc / (336cc + 64cc) * 100

= 16% v/v es la nueva concentración de alcohol en la solución

You might be interested in
What has its own size and shape
erma4kov [3.2K]
I guess it is gases
I think , coz it has its own shape
Moves randomly
8 0
3 years ago
Calculate the molar solubility of CaF2 at 25°C in a solution that is 0.010 M in Ca(NO3)2. The Ksp for CaF2 is 3.9 x 10-11.
madreJ [45]

Answer:

Molar \ solubility=3.12x10^{-5}M

Explanation:

Hello,

In this case, for the dissociation of calcium fluoride:

CaF_2(s)\rightleftharpoons Ca^{2+}+2F^-

The equilibrium expression is:

Ksp=[Ca^{2+}][F^-]^2

In such a way, via the ICE procedure, including an initial concentration of calcium of 0.01 M (due to the calcium nitrate solution), the reaction extent x is computed as follows:

3.9x10^{-11}=(0.01+x)(2*x)^2\\\\x=0.0000312M

Thus, the molar solubility equals the reaction extent x, therefore:

Molar \ solubility=3.12x10^{-5}M

Regards.

4 0
3 years ago
Covalent bonds form between hydrogen and oxygen atoms in a water molecule as a result of the:________.
Oliga [24]

Answer:

D

Explanation:

A covalent bond is said to be formed when two electrons are shared between two bonding atoms as in the formation of the water molecule.

5 0
3 years ago
2. Different versions of a gene
scoray [572]

Answer:

I believe it's A

Explanation:

Hope this helps! ^-^

8 0
3 years ago
Read 2 more answers
2)
Darya [45]
The answer is B. Continental Drift (Confidently)
7 0
3 years ago
Other questions:
  • At lunch, the babysitter gives Tanya and Damien each a chocolate candy. Tanya puts her candy on her plate. Damien saves his cand
    10·1 answer
  • What is the process by which individuals that are better adapted to their evnviroment are more likely to survive and reproduce?
    12·1 answer
  • What is the net ionic equation of the reaction of MgSO4 with Pb(NO3)2? Express you answer as a chemical equation including phase
    6·1 answer
  • The reaction between between common salt and concentrated tetraoxosulphate(vi) acid will liberate
    15·2 answers
  • Identify the molar mass of na2(so4)3
    8·1 answer
  • In a chemical reaction, atoms are rearranged to form new substances. This point
    6·1 answer
  • CLAIM: What is one strategy animals use to take care of their offspring and to ensure successful reproduction? EVIDENCE: List tw
    10·1 answer
  • Do only chemical reactions get colder/hotter?
    15·1 answer
  • What is the mass of one gram of calcium?
    13·1 answer
  • When you dissolve an antacid tablet in water and it produces bubbles, what kind of change is this?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!