a density of 1.0 M solution of NaCL
29,659 results, page 56

Chemistry
Will the 90100 mL of distilled water added to the acid solution (10.00 mL) significantly change the moles of H3O+ in the 1.00 M HCl solution? Why or why not? 
CHEM 101
What volume of a 0.726 M sodium hydroxide solution is required to neutralize 24.6 mL of a 0.298 M hydrobromic acid solution ? 
CHEMISTRY
0.15g of hydrogen chloride (HCl) is dissolved in water to make 6.5L of solution. What is the pH of the resulting hydrochloric acid solution? 
pharmacy math
In what proportion should you combine 1:30 soaking solution and distilled water to create a 500ml solution of 1:70 concentration? 
chemistry
The pH of a 0.00100 M solution of a particular acid is 4.95 at 25°C. Use the solution pH to calculate the concentration of hydronium ion present [H3O+] 
Chemistry 104
A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution? 
Chemistry 104
A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution? 
Chemistry 104
A current of 3.40 A is passed through a Ni(NO3)2 solution for 1.80 hours. How much nickel is plated out of the solution? 
Chemistry
A solution of X2CO3 has a concentration of 15.2 g/dm^3. 25 cm^3 of this solution require 27.5 cm^3 of 0.2 M HCl for complete reaction. Calculate the ralative atomic mass of X 
Clinical chemistry
Describe how you can prepare 0.25 molar solution of sodium hydroxide from an 80 percent stock solution in a 500mls beaker 
chemistry
How many milliliters of 0.50M NaOH solution are required to titrate 20.0mL of a 0.20M H2SO4 solution to an end point? 
chemistry
Stuck on this questions ?! please help The solubility of barium sulphate, BaSO4, is 2.4 x 104 g/100 mL of solution. Calculate the Ksp of this solution. 
chemistry
Stuck on this one please help ! The solubility of barium sulphate, BaSO4, is 2.4 x 104 g/100 mL of solution. Calculate the Ksp of this solution. 
science
A solution is prepared by mixing 90 ml of 5 M HCl and 30 ml of 8 M HNO3. Water is then added until the final volume is 1 L. Calculate the [H+], [OH], and the pH for this solution. 
Chemistry
Calculate the concentration of OH− and the pH value of an aqueous solution in which [H3O+ ] is 0.014 M at 25°C. Is this solution acidic, basic or neutral? 
Chemistry
Hi, can you help me with this question: "you have 25.00 mL of a 0.1000 M sugar solution. How much water must be added to make a 0.025 M solution? Thank you. 
Chemistry
40.0 grams of Al2S3 are dissolved into 200ml of water yielding 220ml of solution, what is the percent strength of the solution? 
Chemistry
How is a 2.0 M solution of HF different from a 2.0 M solution of acetic acid? Would the two solutions have the same pH level? Why or why not? Please help! 
calculus
Find the particular solution to y ′ = sin(x) given the general solution is y = C − cos(x) and the initial condition y(pi/2)=1 
chem 121
What volume of a 0.179 M barium hydroxide solution is required to neutralize 25.6 mL of a 0.377 M perchloric acid solution? 
Chemistry
If the reaction 2H2O2 →2H2O+O2 has a 45% yield, what is the molarity of the H2O2 solution if 2.5 L of this solution pro duces 150 g of O2? 
Science
Calulations and observations to determine the molarity of given sodium hydroxide solution provided with M/20 oxalic acid solution 
Chemistry
You took 7.15 mL of the 2.20 M solution and diluted it. It's absorbance is 0.605. What is the concentration of the new solution? I have no idea where to even start. 
Chemistry
If 8.723 grams of sodium bicarbonate are dissolved in water to produce a 250.0mL solution, what is the molarity of this solution? 
Chemistry
If 8.723 grams of sodium bicarbonate are dissolved in water to produce a 250.0mL solution, what is the morality of this solution? 
Chemistry
Calculate the new molarity of a 20.0 mL sample of 0.550 M CaCl2 solution that is diluted with water to make 250 mL of solution. 
chemistry
9.25% KCl solution is prepared by dissolving enough of the salt to give 100.0 g of solution. What is the mass of water required? 
Cheimistry
how much water must be added to a 30ml of 0.5M KOH solution to produce a solution whose concentration is 0.45M? 
chemistry
calculate the molarity of sodium carbonate in a solution prepared by dissolving 5.3g in enough water to form 250ml of solution 
chemistry
calculate the molarity of sodium carbonate in a solution prepared by dissolving 5.3g in enough water to form 250ml of solution 
chemistry
calculate the molarity of sodium carbonate in a solution prepared by dissolving 5.9g in enough water to form 250ml of solution 
Chemistry
When 400ml of a 0.01M MgCl2 solution is mixed with a 300ml if a NaOH solution at pH 9.0, a precipitate will form. True or False? 
science
No more solute can dissolve in a solution if it is asolution. 
intermediate algebra
1.(5,1)is a solution to the equation2x3y=7.what does this mean? 2.(3,_)ia solution of =43x 
algebrA
x^27x98=0 whT is the smaller x solution and the larger x solution 
algebra
Determine whether 4 is a solution of the inequality x>4 Is 4 a solution? 
chemistry
the (OH) of ammonia solution is 4.0 x102 M. What is the (H3O+) of the solution? 
Chemistry
what is the molarity of a solution of the strong base Ca(OH)2 in a solution that has a pH of 10.80? 
Algebra
Solve the equation and check the solution: 4(t+7)(t+6)=10 the solution t is: 
Math
Does x^23x+3=3 have a solution? My answer was that there isn't a solution. Am i right? 
chemistry
how ti distinguish NH4OH solution from NaOH solution 
Chemistry
Consider a 9.5e10 M solution of HClO4 at 283 K. What is the pH of the solution? 
Chemistry
consider 1.0 L of a solution which is 0.55 M HF and 0.2 M NaF (Ka for HF = 7.2 x 104), Calculate the pH of this solution 
chemistry
How do you make 300 ml of a 2M solution from a 50 M stock solution? 
Chemistry
you have a solution of 0.1 m KCN and a solution of 0.1 m of HF what is the buffer? 
Chemistry
How would you prepare 2.15 L of a 8.00 M solution from a 12.0 M stock solution? 
Chemistry
A solution is labeled 0.450m hcl. What is the h+ for the solution? 
Math
Which ordered pair is a solution of y=x4? (1, 5) (0, 3) (2, 6) (3, 1) Which equation has (2,1) as a solution? y=2x1 y=x+3 y=x3 y= 2x +1 
Science
1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume of 100cm3, and ... 
chemistry
A sample containing 0.0500mol of Fe2(SO4)3 is dissolved in enough water to make 1.00L of solution. This solution contains hydrated SO4 2 and Fe(H2O)6 3+ ions. The latter behaves as an acid: Fe(H2O)6 3+ > Fe(H2O)5OH 2+ + H+ a) Calculate the expected osmotic pressure of ... 
algebra
A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution? 
algebra 2
A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution? 
Chemistry
In the titration of a solution of a weak acid HA with NaOH the pH is 5.0 after 10ml of NaOH solution has been added and 5.6 after 20ml of the NaOH solution has been added. Find the PKa of HA? Pls give some hints to solve this question... 
Moorpark
A solution contains an unknown mass of dissolved barium ion. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 210 mg. What mass of barium was in the original solution? (Assume that ... 
Math
Please help!!!! Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use setbuilder notation to write the solution set. If a system has no solution, state this. 6x  2y = 2, 9x  3y = 1 My answer: Equation 1 X... 
algebra 1
A chemist has one solution containing 30% insecticide and another solution containing 50% insecticide. How much of each solution should the chemist mix to get 200 L of a 42% insecticide? My teacher explained how to set up the problem: 3x+5y=84 x+y=200 what I don't get is why ... 
Biochemistry
Can someone help me calculate protein concentration using the Bradford Assay? If you could show me how to do tube 2, that'd be great. Tube 1: 0 ul Protein Stock Solution, 800 ul Water, 0 ug Protein, Absorbance @595nm = 0 Tube 2: 10 ul Protein Stock Solution, 790 ul Water, 1.4 ... 
Chemistry
A 15mL sodium hydroxide solution of unknown concentration is titrated with 34.5 mL of 1.2M HCl solution. What was the concentration of the sodium hydroxide solution? 
ALGEBRA
CLASIFY THE SYSTEM { XY+Z=6 { 7X2Y2Z=1 { 5X+6Y+3Z=11 A)CONSISTENT. ONE SOLUTION B)INCONSISTENT. INFINITELY MANY SOLUTIONS C)INCONSISTENT. NO SOLUTION D)CONSISTENT. INFINITELY MANY SOLUTION 
Math
1) Find the solution to the following system of two linear equations, if it has a solution. 2xy=3, x+y=1 2Find the solution to the following system of two linear equations, if it has a solution. 2x+y=4, x+3/2y=3 
Math
1. Which number is the resolution of m + 90 = 150? a. 50 b. 60 (my answer) c. 140 d. 240 2. Which number is the solution of n/3 = 12? a. 36 b. 4 (my answer) c. 4 d 36 3. Use mental math to find the solution of 19b = 190. a. 10 b. 11 c. 171 (my answer) d. 208 4. Estimate the... 
Chemistry
the solubility of aspartic acid in water is .500 g in 100 mL at 25 degrees C. If .251 g of aspartic acid is dissolved in 50. mL of water at 50 degrees C and let solution cool to 25 degrees C. is the solution supersaturated, saturated, or unsaturated. the solution was not ... 
Chem
Calculate the concentration in mol per litre of ammonium ions in a solution solution prepared by mixing 360.0mL of 0.250 mol per litre ammonium sulphate solution with 675.0mL of 1.20mol per litre ammonium nitrate solution. Assume solution volumes are additive. I got 0.870 mol ... 
Chemistry
What would be the effect on Ksp if an unsaturated solution of CaSO4 was titrated instead of a saturated solution of CaSO4. would ksp be higher, lower or the same? would ksp be higher due to the more ions available in the solution. so you would have to use more titrant to equal... 
O chemistry
During a recrystalliztion experiment, a student allows the hot solution to cool to room temperature, then chills the solution in an ice bath. Is the student using correct recrystallization technique? Why does the student not simply chill the hot solution in an ice bath initially? 
Physical Chemistry
One potential problem with using molarity to express concentration is that molarity is temperature dependent. If you make a 1.000 M solution of aqueous HCl at 25 degrees celsius, what would the molarity of this solution become if the temperature of the solution is elevated to ... 
Physics
A Ushaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. On the right side of the tube, the depth of oil is 5.00 cm . On the left side of the tube, the depth of the oil is 2.30cm . The density of the water is 1x10^3 kg/m^3... 
physics
A rectangular block of ice 10 m on each side and 1.1 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. a) How high does the top of the ice block float above the water level? m * .116 OK HELP: Use Archimedes' Priciple. b) ... 
Chemistry.
hi again, thanks to the previous help i got the first part of the question. the second part builds on the first part as we used that stock solution for titration of the next. we are now given: Concentration of Standard Acid Soultion (M) = 0.100 M Volume of Standard Acid ... 
was not in class bio/ math
Preparing a Solution: A. Calculate the amount of methylene blue chloride (MW = 319.8 g/mol) needed to make 50 ml of a 10 mM stock solution. (Show calculations below) B. If you wanted to then dilute the solution from Part A to a final concentration of 0.1mM (in 50 ml total ... 
Chemistry
100.0cm3 of 2.0mol dm3 hydrochloric acid is mixed with 2.5g of magnesium oxide powder. The mixture is stirred until no further change occurs. The resulting solution still contains excess hydrochloric acid. Calculate the volume of 1.5mol dm 3 sodium hydroxide solution needed ... 
Calculus
Let the length of a rod be 10 meters and the linear density of the rod ρ(x) be written in the form ρ(x) = ax + b with x = 0 representing the left end of the rod and x = 10 representing the right end of the rod. If the density of the rod is 2kg/m at the left end and 17 kg/m ... 
chem
a 45.8mL sample of a 5.8 M KNO3 solution is diluted to 1.00L. What volume of the diluted solution contains 15.0g KNO3? how do you do this? moles of solution: 5.8*.0458 moles Grams of solute= moles*molmassKNO3 Volume of 15g= 1000ml*15/gramssoluteabove 
chemistry
A chemist makes a “stock” solution of KOH by dissolving 1050.0 grams in enough water to make 1.50 liters of solution. If later on the chemist wants to use this stock solution to make 200.0 mL of 0.10 M KOH, what would the chemist need to do? (Define the steps and show the ... 
chemistry
Sodium chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine gas can be obtained from 2.50 mol NaCl? 
Chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.50g sample is burned, and 1.80 g of CO2(g) is produced. What is the mass percentage of the table salt in the mixture? 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.00g sample is burned, and 2.50 g of CO2(g) is produced. What is the mass percentage of the table salt in the mixture 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 4.00g sample is burned, and 3.30 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture? 
chem
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.50g sample is burned, and 3.10 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture? 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.50g sample is burned, and 1.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture? 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.50g sample is burned, and 1.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture? 
Chemistry
1. I do not understand why this cannot go to equilibrium? Na2CO3(aq)+HCl(aq)>H2O(l)+CO2(g)+NaCl(aq) Please explain. 2. Are K subscript c the same as K subscript eq? Do they both stand for the equilibrium constant? 
Chemistry
What are the signs of dH, dS, and dG for the following and please explain why? Also what does it mean by sublimation, and molten? 1. CO2(s) > CO2(g) (Dry ice subliming) dH = ? dS = ? dG = ? 2. The electrolysis of molten NaCl(l). dH = ? dS = ? dG = ? 
chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 4.00g sample is burned, and 3.30 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture? 
Chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 4.00g sample is burned, and 2.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture? 
Physics
In a cathode ray tube, a beam of electrons is injected horizontally into the exact center of the parallelplate region. Here L = 3.0 cm and d = 0.20 cm. The top plate has a surface charge density of σ0 = +0.15 μC / m2, and the bottom plate has a surface charge ... 
Chemistry
The vapor pressure of an unknown substance is given at various temperatures. properties of the substance are: density of solid=1.375g/ml density of liquid= 1.150g/ml. freezing point= 275.0K boiling point=375.0 K How would i calculate the vapor pressure at 150.0K measured at ... 
Chemistry
1. Imagine you have a saturated solution of Ca(OH)2, at equilibrium, that has some undissolved Ca(OH)2 precipitated on the bottom of the test tube. If you add an additional scoop of Ca(OH)2 to the solution will concentration of [OH] in the solution (increase, decrease, or be ... 
Statistics
Joint probability density function is: x + y where 0<x<1 and 0<y<1 (0 elsewhere) Find variance of (30x + 25y) Answer is 11.48  My calculations Marginal probability density functions (same for x and y): f(x) = x + 1/2 over 0<x<1 f(y) = y + 1/2 over 0<y&... 
physics
A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is 3200 kg/m^3. The mass of the wire is small enough that its effect on the tension in the wire can be neglected. The upper end of the wire is held ... 
Physics
A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is 3200 kg/m3. The mass of the wire is small enough that its effect on the tension in the wire can be neglected. The upper end of the wire is held fixed... 
chemistry
We did a LAB where we used a spectrophotometer to measure the absornency of a solution. It was a bluish color, so the question is.... What could be done to modify this experiment if the original solution was colorless? HINT: you can NOT add a coloring agent such as food ... 
calculus maths
Hi can some one help, explain the following please. I seem to have issues with this: 1 Find the corresponding particular solution (in implicit form) that satisfies the initial; condition y = when x = 0. 2 Find the explicit form of this particular solution. 3 What is the ... 
Chemistry
A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water to form 0.250 L solution. The resulting solution has an osmotic pressure of 0.605 atm at 25 Celsius. Assuming that the organic compound is a nonelectrolyte... 
chemiestry
One liter of buffered solution should be prepared with a general concentration of 0.320M with a pH of 5.83 :  Pyridine solution (formula: C5H5N) in water at a concentration of 1.00M  HCl solution in water at a concentration of 0.85M  Distilled water In addition, given: ... 
Biology
A student wishes to prepare 300 mL of 0.25 M sucrose. He puts 25.7 g of sucrose in a beaker and then adds 300 mL of dH2O. The total volume of the solution after the sucrose has been dissolved is 330 mL. a) What did he do wrong when preparing his solution? b) What is the actual... 
chemistry
2.) If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10M ... 
chemistry
2.) If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10M ... 
chemistry
Use a balanced redox equation to answer the following question. 71.7 mL of 1.13 x 104 mol L1 potassium ferricyanide solution is required to react completely with 43.9 mL of ascorbic acid solution (under acidic conditions). What is the concentration of the ascorbic acid ... 
Algebra
Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expression. ln ã(x+4)=1 What is the exact solution? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. ...