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
Nitella [24]
3 years ago
12

What is the pH if 20 mL of pH = 2 solution is diluted to a final volume of 600 mL?

Biology
1 answer:
Mashutka [201]3 years ago
7 0

Explanation:

Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge.  pH measures how basic or acidic a water-based solutions are, with a formula for pH is

pH = -log[H+].

...where pH is -base 10 log of the concentration of hydrogen ions within the solution.

Initial volume= 20 mL

Final volume= 600 mL

# of dilutions= \frac{600}{20} = 30

for a pH 2= [H+]= 10^{=2}

∴ [H+]=  \frac{10^{-2}}{30} = 3.333 * 10^{-4}

and pH is an antilog of [H+]= - log \frac{10^{-2}}{30} = 3.333 * 10^{-4}

∴pH = 3.47

Learn more about pH at brainly.com/question/4981491

Learn more about pKA at brainly.com/question/11062486

#LearnWithBrainly

You might be interested in
This can contribute to desert formation:
Tatiana [17]

Answer:

C

Explanation:

Due to the erosion of soils, no trees to protect the ground from drying out.

3 0
3 years ago
Read 2 more answers
Where do the alleles
irga5000 [103]

Answer:

In a zygote alleles comes from both male chromosome and female chromosome................ So, inherited from the parents.

5 0
3 years ago
A two-kingdom system of classification was used until which decade?
larisa [96]
It was used till the 1960s. Hope i helped.
6 0
3 years ago
Read 2 more answers
Which of the following is an example of parasitism
Len [333]

Answer:

A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasite lives on or in the body of the host. A few examples of parasites are tapeworms, fleas, and barnacles. The fleas, in turn, get food and a warm home.

3 0
2 years ago
Duration of hypotension before initiation of effective antimicrobial therapy is the critical determinant of survival in human se
nydimaria [60]

The goal is to find out how often effective antimicrobial therapy is delayed after the start of persistent or recurrent hypotension in septic shock and how this affects mortality.

Design: A cohort research that was conducted in retrospect between July 1989 and June 2004.

Setting: Ten hospitals (four academic, six community) and fourteen critical care units (four medical, four surgical, and six combined medical/surgical) located in Canada and the United States.

Patients: The 2,731 adult patients with septic shock listed in their medical records.

Measurements and key findings: Survival to hospital discharge served as the primary outcome indicator. A survival percentage of 79.9% was found when an antibiotic efficacious for isolated or suspected infections was administered within the first hour of verified hypotension. Over the following 6 hours, each hour of antibiotic delivery delay was linked to an average 7.6% decline in survival. When compared to obtaining treatment within the first hour after the beginning of persistent or recurrent hypotension, the in-hospital mortality rate was considerably higher by the second hour (odds ratio 1.67; 95% confidence range, 1.12-2.48). The single best predictor of outcome in multivariate analysis (which included Acute Physiology and Chronic Health Evaluation II score and treatment factors) was time to the start of effective antimicrobial therapy. It took 6 hours on average to start effective antimicrobial therapy (25-75th percentile, 2.0-15.0 hrs).

Conclusions: In adult patients with septic shock, effective antibiotic therapy during the first hour of confirmed hypotension was related with enhanced survival to hospital discharge. Only 50% of patients with septic shock got efficient antimicrobial therapy within 6 hours of being diagnosed with proven hypotension, despite a steady rise in fatality rate with increasing delays.

<h3>What is septic shock?</h3>

Septic shock is a potentially fatal illness that develops after an infection when your blood pressure drops to an unsafely low level. The infection might be brought on by any kind of bacterium.

To learn more about septic shock with the help of given link:

brainly.com/question/4235870

#SPJ4

7 0
2 years ago
Other questions:
  • Why are cancer cells harmful
    6·1 answer
  • Paraphrase the explanation of how a virus reproduces. why did the fact that hela cells are malignant make them particularly usef
    14·1 answer
  • Match the following. Please help?!
    11·1 answer
  • What is the function of Coral?
    15·1 answer
  • HELP ASAP!!!! If we don’t do something soon, there will be more plastic than fish in the oceans. How do you suggest we solve thi
    14·1 answer
  • give 5 examples that can be push 5 examples that can be pull 5 examples that can be stretch 5 examples that can be turn
    6·1 answer
  • What do you think the word "genome" refers to when talking about DNA Structure
    11·1 answer
  • The part of the Earth that is made up of plates is the
    11·1 answer
  • What is the density of an object that has the mass of 25 grams and the volume of 10
    12·1 answer
  • HELPPP PLEASE ITS DUE IN 40 MINUTES!!!!!!!!!!! IM FAILING
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!