0
1. Weigh 60 g NaOH.
2. Put this NaOH in a 1 L volumetric flask.
3. Add slowly 200 mL distilled water and stir.
4. Put the flask in a thermostat at 20 0C and maintain for 1 hour.
5. Add distilled water up to the mark. Stir vigorously.
6. Standardize the solution by titration with oxalic acid, potassium hydrogen phtalate, etc.
7. Transfer the solution in a bottle and apply a label (date, name of the operator, name of the solution, normality).
What else can I help you with?
How many protons and neutrons in N-15?
The number after the "N", 15, is the mass number. The mass number is the sum of the number of protons and the number of neutrons. So, if you find a periodic table, you can find the atomic number, which is the same as the number of protons. Because the atomic number of nitrogen is 7, it has 7 protons. Then we take the mass number (protons + neutrons) and subtract the number of protons to find the number of neutrons. 15 - 7 = 8 neutrons in 15N.
What element has 7 electrons and 7 protons and 8 neutrons?
The element with 7 electrons, 7 protons, and 8 neutrons is nitrogen-15 (15N).
14N and 15N are isotopes they differ in protons numbers?
The isotope N-14 has 7 neutrons and the isotope N-15 has 8 neutrons.
What is the normality of isotonic saline 85 percent NaCL?
NaCl (gmw=58g, valence=1) Grams of equivalent weight = 58/1 = 58grams so 1EQ/ 58grams=1 Normality is expressed in Eq/L With 1% defined as 1 gram per 100 ml, 85% is 85 grams per 100 ml (1EQ/58grams) * (85grams/100ml) * (1000ml/L) = 85000eq/5800L = 14.655 or 15N Although I don't think you were supposed to do 85%, for clinical chemistry it should be something more like 0.85% or the solution would be too hypertonic. In which case it would be (1eq/58grams)*(0.85grams/100ml)* (1000ml/L) = 850eq/5800L = 0.14655 or 0.15N FG 9/16/2012
What element has 8 proton 8 neutrons and 10 electrons?
The element that has 9 protons is fluorine. Its atomic number is 9, indicating that the element has 9 protons in the nuclei of its atoms. If there are 10 electrons, then the fluorine atom has gained an electron and is now a negatively charged anion with a charge of 1-.
-5 - 15n equals 10?
-5 -15n = 10add 5 to both sides-15n = 15divide both sides by -15n = -1
How would you factorise 15n - 1?
14
What is 15N equals 0?
It's an equation in 'N' ... about the simplest one you could write.The solution of that equation is: N=0 .
What kind of equation i could use to put 15n and 105 in my equation?
You could do so many. Here are some examples: 15n=105 15n+105=1005 15n-105=270 Hope this is what you were looking for. :) Good luck!
What country is 15n and 125E in?
The coordinates 15N and 125E correspond to the Philippines, an island country in Southeast Asia.
What major city is at 15N and 91W?
Mexico City is the major city located at 15N and 91W coordinates.
Which continents are crossed by the 15N latitude line?
The 15N latitude line crosses through North America, Africa, and Asia.
What is a continent on 15N latitude?
Bob
What is n in 15n 10 190?
To figure out what N stands for 15n, 10 and 190 needs to be used in an equation. If the equation was 15n-10=190, you would start by adding 10 to both sides to give you 15n=200. The next step would be to divide both sides by 15 which gives you n=13.33.
What city is located at 15N 91W?
The city located at 15N 91W is Guatemala City, which is the capital and largest city of Guatemala.
Eight subtraced fromt he product of fifteen and a number?
The product of 15 and a number (when the number is n) is 15n. Subtract 8 from this and we have 15n-8
What capital city is located at 15N and 121E?
The capital city located at 15N and 121E is Manila, the capital of the Philippines. The coordinates 15N and 121E correspond to the geographical location of Manila on the world map. Manila is a major cultural, economic, and political center in the Philippines and is known for its rich history and vibrant atmosphere.
