Mike needs to make 2 liters of a 0.3 M NaOHsolution for an experiment. He has a 1.2 M stock solution. How much stock solution must he dilute to reach his desired 2 liter, 0.3 M final solution?
Select the correct answer below:
0.18 L
0.5 L
1.2 L
8.0 L
Mike needs to make 2 liters of a 0.3 M NaOHsolution for an experiment. He has...
Mary is conducting an experiment and needs to dilute 150. ml of a 0.880 M HCl solution to a 0.500 M HCl solution. What volume must she dilute the stock solution to in order to get her desired concentration, in milliliters?
You need 100 mL of a 0.00057 M solution for an experiment. You are given 10 mL of a 5.7 M stock solution. What is the best method to get the final volume and concentration you for trial? -It is not possible to reach that concentration with the info presented. -Use a 1.0 mL volumetric pipette and then dilute with water to 100 mL, then repeat serially until the desired concentration is reached. -Use a graduated cylinder to measure 0.1...
2. Mike currently 48, has $20,000 saved for retirement. He is currently saving $500 at the beginning of every month and his employer matches his total savings contribution on a monthly basis. Mike projects that he could earn 9% on his savings. He plans to retire at 65 and expects to live until age 85. His current expenditure on basic needs at the beginning of every month is $2500 every month which is expected to increase with inflation of 3%....
1) You need to make an aqueous solution of 0.209 M potassium fluoride for an experiment in lab, using a 300 mL volumetric flask. How much solid potassium fluoride should you add? grams 2)How many milliliters of an aqueous solution of 0.244 M zinc acetate is needed to obtain 11.1 grams of the salt? mL 3) In the laboratory you dissolve 13.9 g of copper(II) chloride in a volumetric flask and add water to a total volume of 125 ....
Refer to the precipitation reaction below. CoCl2(aq)+2NaOH(ag) Co(OH)2(s)+2NaCI(aq) How much 0.5 M NaOH solution in liters will completely precipitate the Co+ in 1.6 L of 0.12 M CoCl solution? Round to two significant figures, and do not include units in your answer Provide your answer below
Johnny wished to create a 0.300 M NaCl solution. Johnny only had 50.0 mL of water, however. To create his goal solution, Johnny knew he needed to know the molar mass of NaCl, which was [Select ] Next, to find the the number of moles of Naci he needed, Johnny simply multiplied the [Select] by the volume of water, in liters, which was [Select) L. Then, he calculated the number of grams of NaCl he needed taking this number of...
1.
Russell Biven decides to make some iced tea. He starts with 6
liters of water at 25°C. Assume that the properties (heat
coefficients, density, etc) for iced tea are the same as for
water.
Example 1 Example 2
Part
Description
Answer
Chk
History
A.
Russell starts by bringing the 6 liters of water to a boil. How
much heat is needed to be added to bring the water to a boil?
(include units with answer)
A: 450000cal
C:...
6.(12pts) Should a precipitation of Pb(IOs)2(s) form when 55.0 ml of 0.0450 M Pb(NO:)2 (aq) solution is added to 48.0 ml of 0.215 M NalOs(ag) solution? Assume that at the temperature at which the experiment is performed, Ks of Pb(IOs)2(s) is 2.8 x 10-13 All work must be shown- a guess is not sufficient Calculate the solubility of Cr(OH)s in grams per liter in a system buffered at pH 10.6. Data:Kn of Cr(OH)3(s) = 6.3 x 10-31 . The molar...
Test sample volume = 10.00 mL
Average NaOH volume = 13.10
NaOH concentration = 0.1051 M
Scenario 3: In small amounts (-1 ppm = 1 mg/L) copper (II) ions are used as an algaecide in swimming pools. Blue Water Pool Treatments (BWPT), a producer of algaecide and other pool chemicals, recently had an incident at one of their manufacturing plants; someone added too much copper sulphate to the product mixture, resulting in an algaecide that is more concentrated than the...
What is the purpose of the acid added in the beginning of the
experiment?
CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mole's Salt with e-Phenanthroline Required Reagents and Supplies 50 mL of 0.0005 -0.0006 M of Moher's solution unknown. 10 of Hydroxylamine hydrochloride (NH2OH, HCT, 500 ml of phenantholine solution contains 05 of-phenanthroine monohydrate). 83 g of sodium acetate (NOAC3H20) in 500 ml of water (for 1.2 M of phl 5 buffer som minimum 3 of...