You have a large bottle of 2% saline solution in the lab (2% NaCl, which is sodium chloride). You need 5 ml of 0.1% saline for an experiment. Do the calculation for the dilution you would need to make (i.e., calculate the volume of 2% saline and the volume of water you would need to combine).
Solved
Show answers
More tips
- H Health and Medicine 5 Simple Steps to Quit Smoking for Good...
- H Health and Medicine Coughing: Causes, Types, and Treatment Methods...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
Answers on questions: Biology
- B Biology Cn someone make a zoom so I can join...
- B Biology What are the major structures invloved in lymph flow?...
- B Biology Answer. 1 A DNA nucleotide consists of three smaller units. Which type of biomolecule represents one of these smaller units? A Carbohydrate B Lipid C Protein D...
- B Biology The primary growth of a plant adds , and secondary growth adds . View Available Hint(s) The primary growth of a plant adds , and secondary growth adds . girth;...
- B Biology what is the best explanation of how scientists know cyanobacteria existed 3.5 billion years agoA; They were found in fossils that scientists were able to dateB;...
- B Biology Vector-borne transmission of an infectious organism occurs via: Select one: A. direct contact. B. animals or insects. C. smoke or dust. D. inanimate objects....
- B Biology The frequency of a particular lethal recessive allele in a population is 0.02. Given this information, calculate the percentage of individuals who are carriers...
- B Biology On which date are there more hours of daylight...
- B Biology Which two naturalists were responsible for the development of The Principle of Natural Selection? Group of answer choices...
- B Biology What is AI Project cycle ?...
Ответ:
volume of 2% saline (V₁) = 0.25ml
volume of water = 4.75ml
Explanation:
The requirement in the question is to obtain 0.1% of NaCl from 2% NaCl, and the process is dilution. The general dilution equation is guven by:
C₁V₁ = C₂V₂
where:
C₁ = initial concentration = 2%
V₁ = initial volume = ?
C₂ = final concentration = 0.1%
V₂ = final volume = 5ml
C₁V₁ = C₂V₂
calculating for V₁
∴ V₁ = (C₂V₂) ÷ C₁
= (0.1% × 5) ÷ 2%
V₁ = 0.25ml
Now, let us calculate the volume of water needed:
V₁ + Volume of water = V₂ (volume of 0.1% NaCl)
0.25 + volume of water = 5
volume of water = 5 - 0.25
volume of water = 4.75ml
Ответ:
Angle C is 34
Angle A is 90 (that little box indicates 90)
34+90=124
180-124=56
Ange B is 56 degrees.
Hope this helps!!