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What is the concentration of a solution prepared by diluting 20.0mL of a 0.200 M NaCl to 250.0 mL?
Wiki User
∙ 11y ago
Use the equation M(initial)*V(initial)=M(final)*V(final).
In this case, M(initial) is 0.200 M NaCl. V(initial) is 20.0mL. V(final) is 250.0mL. You are solving for M(final).
To solve, you rearrange the equation so M(final)=(M(initial)*V(initial))/V(final), which gives you (0.200*20.0)/250. The answer is 0.016 M for M(final).
You don't need to convert mL to L in this type of problem. You can if you want, but you will end up with the same answer. It's just an extra unnecessary step, unless the question is asking for a Volume in L. But in this case you were asked for concentration (Molarity), so no volume conversions were necessary.
Wiki User
∙ 11y ago
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If a 20.0g sample of HF is dissolved in water to give 200mL of solution what is the concentration of this solution?
concentration = molarity molarity= moles/ volume (in liters) H=1g F= 19g 1gH+ 19gF= 20gHF 20gHF x (1 mol HF/ 20gHF) = 1mol HF 2.0x10^2ml= 200ml x (1L/1000mL)= .200L Concentration= 1 mol HF/ .200L Concentration= 5M
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you can only use the following glassware 5 10 20 25 and 50ml pipette 50 100 200 or 500ml volumetric flasks
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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?
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What is the volume of alchol in 200ml of a solution if it is 20 percent?
200ml of solution x 20% of alcohol = 40ml of alcohol..
If a 20.0g sample of HF is dissolved in water to give 200mL of solution what is the concentration of this solution?
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How much time is required to administer 200ml of glucose iv solution?
40mn
How many equivalent of H2SO4 are contained in 200ml of a 0.2 N solution?
a lot
How do you prepare 200ml of ethyl acetate of 0.1 Normality solution?
Density of etyl acetate
What is the molarity of a solution that contains 0.5 moles of NaOH in 200ml water?
It is 2.5 molar. The reason for this is that molarity means moles per litre. You have to multiply by 5 to get from 200ml to a litre, so you have to do the same with the moles.
You are provided with a 1000ppm sodium solution describe how you would prepare a volume of 200ml with a concentration of 5ppm sodium in a two step dilution?
you can only use the following glassware 5 10 20 25 and 50ml pipette 50 100 200 or 500ml volumetric flasks
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200mL equates to 2dL (deciliters).
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Is 200mL less than 124 inch?
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How much 5 percent acid must be added to 25 percent acid to get 200 ml of 8 percent acid?
Answer:170mL of 5% acid solution and 30mL of 25% solution must be mixed to produce 200mL of a 8% acid solutionLet x = 5% acid solutiony = 25% acid solution Equations:x + y = 200mL ----equation (1)0.05x + 0.25y = 0.08 * 2000.05x + 0.25y = 16multiplying by 1005x + 25y = 1600 ----equation (2)eliminating equations (1) and (2)-5(x + y = 200)-5-5x -5y = -10005x +25y = 1600=========20y = 600y=30substitute x=30 to equation (1)x + 30 = 200x = 200 - 30x = 170thus 170mL of 5% solution and 30mL of 25% solution must be mixed to produce 200mL of a 8% acid solution
