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2 If 3.86 mL of a standard iron solution 1.00 mL 0.050 mg Fe is diluted to 49.9 mL what is the final iron concentration in mg FemL?
Wiki User
∙ 14y ago
Eventually you are going to have to sit an exam in this - it may be better for you if you ask someone to explain the method.
Improved*- Any question that is asked on this website could be on an exam. Wikianswers is suppose to give ANSWERS, not personal opinions. And having any questions asked being on a an exam is none of your concern. If you dont know the answer just say you dont know.
Times the original concentration by the original volume, this will give you the amount of iron present in the sample.
This amount of iron is diluted (divided) into the final volume yeilding the final concentration.
As a quick check you can compare the answer to a common sence ratio of the initial and final volumes and concentrations in this case roughly 4 --> 50ml or 0.2 --> 0.004mg/ml. If your answer is in the same region you can be confident you are correct.
Wiki User
∙ 14y ago
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If 55 ml of a 0.211 m NaHO is diluted to a final volume of 125 ml what is the concentration of naoh in the diluted solution?
Are you sure you mean 0.211 m not 0.211 M Is the concentration molality or molarity? If 55 ml of a 0.211 m NaOH is diluted to a final volume of 125 ml what is the concentration of NaOH in the diluted solution?NaOH not NaHO the compound is Sodium hydroxide Molar mass of NaOH = 23 + 16+ 1 = 40 0.211 moles of NaOH = 0.211 * 40 = 8.44 grams of NaOH per liter of solution 55 ml = 0.055 Liter 8.44 grams of NaOH per liter of solution * 0.055 liter = 0.4642 g of NaOH Moles of NaOH = 8.44 ÷ 40 = 0.211 moles 0.211 moles of NaOH in 125 ml = 0.211 moles ÷ 0.125 L = 1.688 m
What is the final concentration if 75.0 mL of a 3.50 M glucose solution is diluted to a volume of 400 mL?
A 1 mole glucose solution means that there would be 1 mol/liter. There is only .075 liters, so there is only .075 moles present. .075 moles in 400 milliliters is a .075 to .4 ratio. By expanding the ratio, it is found that there are .1875 moles to 1 liter, making the final concentration 0.1875 M.
How many grams of KI are in 25.0ml of a 3.0 (mv) KI solution?
55 ml of a 4.05 M solution of KI solution contains 55*4.05=222.75 millimoles. 20.5 ml of the diluted solution contains 3.8g of KI,so no.of moles of KI=3.8/(mol.wt of KI=165.9) is 22.9 millimoles. molarity of final diluted solution=22.9/20.5=1.117M since the no. of moles of KI present in initial and final solution are same. let.V(in ml) be the final volume of diluted solution. 222.75/V=1.117 V=199.41 ml final volume =199.41 ml
How do you solve a dilution problem in Chem?
The key formula for solving a dilution problem is M1V1=M2V2 (alternately, MAVA=MBVB) where concentration is M (measured in Molars, a unite of concentration-->Molars=moles solute/Liters solution) and the volume of solution is V. M1V1 represents the inital conditions (pre-dilution), and M2V2 denotes the final conditions (post-dilution). Plug in the three values you know to find the fourth value, which you are solving for. Ex. 750mLs of a 0.5 M NaC2H3O2 solution is diluted with 250mL of H2O. What is the new concentration of NaC2H3O2? Answer: (0.5M)x(.750L)=(MB)x(.750L+.250L) 0.375ML=(MB)x(1L) MB=0.375M
A student carefully diluted 25.0 ml 0.6 M NaOH solution in 475 ml of distilled water What is the molarity of the diluted solution of base?
Assuming that the 25.0 ml are added to the 475 ml of water, not diluted to that volume:Moles of NaOH in the original 25 ml = 25/1000 x 0.6 = 0.015 moles Final volume = 25 + 475 ml = 500 ml. We have 0.015 moles in 500 ml, so 0.03 moles in a litre, Molarity = 0.03.
What is the molarity of a solution when 50.0ml of a 4.00M KOH solution is diluted to 200ml. what is the percent concentration of KOH in this final solution. asume the density of 1.0gmole?
The concentration is 1 mol/L or 5,611 g KOH/100 mL solution.
If 20.00mL of a 1.50M solution of KBr is diluted to a final volume of 150.0mL what is the new molar concentration?
initial molarity*initial volume= final molarity*final volume Initial molarity= 1.50M Initial volume= 20.00ml Final Volume=150.0ml Thus final molarity =1.50M*20ml/150ml=0.200M. New molar concentration= final molarity
If 55 ml of a 0.211 m NaHO is diluted to a final volume of 125 ml what is the concentration of naoh in the diluted solution?
Are you sure you mean 0.211 m not 0.211 M Is the concentration molality or molarity? If 55 ml of a 0.211 m NaOH is diluted to a final volume of 125 ml what is the concentration of NaOH in the diluted solution?NaOH not NaHO the compound is Sodium hydroxide Molar mass of NaOH = 23 + 16+ 1 = 40 0.211 moles of NaOH = 0.211 * 40 = 8.44 grams of NaOH per liter of solution 55 ml = 0.055 Liter 8.44 grams of NaOH per liter of solution * 0.055 liter = 0.4642 g of NaOH Moles of NaOH = 8.44 ÷ 40 = 0.211 moles 0.211 moles of NaOH in 125 ml = 0.211 moles ÷ 0.125 L = 1.688 m
How do you calculate the concentration of two mixed solutions?
calculate final molarity of the solution if 11ml of 5m solution is made up to 20ml
What tatics did Hitler use during the Final Solution?
sent them to concentration camps and death camps
Most of the gas chambers used for Hitler's final solution were located in concentration camps?
Yes
If you have a stock solution of 50ul at a concentration of 50 ul per ml and need a final concentration of 2 ul per ml how would you work this out?
You need to add the 50ul stock solution to 1200ul of distilled water to produce 1250ul of solution with a concentration of 2ul per ml.
What is the final percent concentration of the solution when 600 ml of 100 percent methanol added to 4400 ml of water?
13.6% methanol solution.
Did Hitler even set foot on concentration camps?
No, he never visited the concentration camps. He did not deal with the Final Solution plan, that was mostly Himmler's work.
What is the final concentration if 75.0 mL of a 3.50 M glucose solution is diluted to a volume of 400 mL?
A 1 mole glucose solution means that there would be 1 mol/liter. There is only .075 liters, so there is only .075 moles present. .075 moles in 400 milliliters is a .075 to .4 ratio. By expanding the ratio, it is found that there are .1875 moles to 1 liter, making the final concentration 0.1875 M.
What is the concentration of the hydroxide ion in a solution if 0.12 mol of strontium hydroxide are dissolved in water and the final solution volume is 500 mL?
.48 = [OH-]
What was Hitler's hope for the ghettos and how did this lead to the Final Solution?
Hilter did not dicide what to do to the Jews so he took them to GETTO where then they where send to the Final place concentration camps
