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1.Weigh 15 g ultrapure NaCl dried at 110 0C for 30 min.
2. Transfer NaCl in a clean 0,1 L volumetric flask.
3. Add 0,09 L demineralized water.
4. Put the flask in a thermostat and maintain 30 min at 20 0C.
5. Add demineralized water up to the mark.
6. Stir vigorously and transfer in a clean bottle with stopper.
7. Add a label with necessary information.
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How much is 15 parts per trillion?
It's equal to 0.0000000015 percent. Think of this way: 15 parts per thousand is 15/1000 = 0.015 or 1.5 percent. 15 parts per million is 15/1E6 = 0.000015 or 0.0015 percent. 15 parts per billion is 15/1E9 = 0.000000015 or 0.0000015 percent. And 15 parts per trillion is 15/1E12 = 0.000000000015 or 0.0000000015 percent.
What is the molarity of a 2.5 L sample that contains 15 moles of NaCl?
The molarity is 6.
15 centimeter is what percent of a meter?
15 centimeters = 15% of 1 meter
15 ounces is 60 percent of 100 percent how many ounces is 40 percent?
10
What is 30 percent of 15 kilogram?
30% of 15 kg= 30% * 15= 0.3 * 15= 4.5 kg
How many grams of NaCl would be required to make 6M solution?
It depends on the final solution Volume you want to prepare. For 100ml of a 6M NaCL solution, you add 35.1g of NaCl to water until you reach 100ml. Dissolve and autoclave for 15 mins.
A student found thet her mixture was 15 percent NH4cl 20 percent NaCl and 75 percent Sio2 Assuming her caculations are correct what did she most likely do incorrectly in her experiment?
This student has 15 percent, 20 percent, and 75 percent of something. Her calculations do not add up to 100%.
Explain the provision to statutory reserve given is the banking regulation act?
15 percent of profit after tax.
How much 7 percent NaCl soln and 45 percent Nacl sol req'd to make 800ml 15 percent NaCl soln?
Only possible to calculate approximately (without knowing densities of all solutions) when 'percent' means 'gram per 100 ml' or 'ml per 100 ml'Solve the following equations to find V1 and V2:7% * V1 (ml) + 45% * V2 (ml) = 15% * 800 (ml)V1 (ml) + V2 (ml) = 800 (ml) [Especially this 2nd equation in an approximation]Outcome: 632 and 168 ml respectively, but this is an approximation! (due to the ignoring of volume contraction: mixing will result in LESS ml's than 800 ml, so concentration will be more than 15%)
What is 15 percent of 20 explain?
15 X 20= 3.00 If you had a dress that was $20 and was on sale at 15% off, you would pay $17. Because you multiplied 15% (sale price) by the price of the dress ($20).
What 15 percent percent of 450?
15 percent percent of 450 = 0.675.
How many NaCl formula units does it contain?
0,16 mg NaCl is equivalent to 2,7.10-5 mol.
What is 100 percent if 15 percent is 24?
Divide 24 by 15 percent (.15) 24/.15 =160
What is 15 percent of 409?
15 percent of 409 is 61.35.
15 percent of 100?
1.5
What percent of 50 and 15?
50 is 100*50/15 percent of 15. That is 333.33... recurring %.50 is 100*50/15 percent of 15. That is 333.33... recurring %.50 is 100*50/15 percent of 15. That is 333.33... recurring %.50 is 100*50/15 percent of 15. That is 333.33... recurring %.
What is 15 percent of 30 percent?
15% of 30% 15/100 =0.15 30/100 =0.3 0.15×0.3 = 0.045.
