a density of 1.0 M solution of NaCL
29,695 results, page 42

science
2mL of a 10M solution of Compound A is taken and 48mL added. 1mL of this solution is then taken and dried to dryness before being redissolved in 0.1mL. What is the concentration of the 0.1mL solution? 
Algebra
Solution A is 30% acid and solution B is 60% acid. How many gallons of each solution must be used to create a 60 gallon mixute that is 50% acid. I have to set this up as a system of equations, and I thought one system was x + y = 60, but I can't get an answer, please help 
Chemistry
When 4.73 g of a nonelectrolyte solute is dissolved in 965 mL of water at 28 °C, the resulting solution exerts an osmotic pressure of 945 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of the solute? 
chemistry
a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution? 
chemistry
a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution? 
chemistry
a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution? 
math
Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set−builder notation to write the solution set. If a system has no solution, state this. 6x – 2y = 2, 9x – 3y = 1 
Chemistry
When 4.54 g of a nonelectrolyte solute is dissolved in 565 mL of water at 29 °C, the resulting solution exerts an osmotic pressure of 835 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of the solute? 
chemistry
A solution is made by adding 5.0 g Na2CO3 * 10H2O to enough water to make a 500 mL solution. what is the molarity. I have: M=mol solute/liter solution = (5/286)/.5 = .035M 286 is what i got for the molar mass of Na2CO3 * 10H2O Is that correct?? I think it is, but the next ... 
Physics
A con of soda displaces 3.79 * 10^4 m^3 of water when completely submerged. Each 0.018 kg can contains 3.54 * 10^4 m^3. Compare the buoyant force on a can of diet soda of density 1001 kg/m^3 to the force on a can of regular soda of density 1060 kg/m^3. If many cans of diet ... 
Chemistry
A 10.0 mL volvume of Ultra Bleach is diluted in a volumetric flask. A 25.0 ml sample of this solution is analyzed accordign to the procedure in this experiment. Given that 33.75 mL of 0.135 M Na2S2O3 are needed to reach the stochiometric point, answer the following. a. How ... 
Chemistry
for the reaction 2Na(s) + Cl2(g) > 2NaCl(s), how many grams of NaCl could be produced from 103g of Na and 13L of Cl2 (at STP) 
chemistry
If H2SO4 were added to the following, would it form a salt, if so what is the name of the salt? NaCl Ca(OH)2 Hf AlCl3 H2O Mg(OH)2 
10th grade
Consider the following chemical equation: NaOH (aq) + HCl (aq) ® NaCl (s) + H2O (l), the reactant NaOH? 
Portland State
Which solutions has more sodium (assuming all Na dissociates in all cases) .50 M NaCl or 5%(w/v) CH3COONa) 
chem
If 507 g FeCl2 were used up in the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, how many grams of NaCl would be made? 
AP Chemistry
Why would .25 molality of CaCl2 have a larger effect on the freezing point of water than .25 molality of NaCl? 
Math
The ractangle given has a perimeter of 14 units. Find the value(s) of x by factoring a quadriatic equation. x= 12/(x+1) y= 6/ (4x) If anyone can help me that would be awesome, thanks a bunch. I can only give you an example : for example x2  x 6 = 0 solution x2  6 = 0 (x + ... 
algebra
Todd has 1 liter of a 20% sulfuric acid solution. How much of a 12% sulfuric acid solution must he mix with the 1 liter of 20% solution to make a 15% sulfuric acid solution? 
Chemistry
Calculate the molality (m) of a 6.56 kg sample of a solution of the solute acetone dissolved in the solvent ethanol if the sample contains 1.44 kg of acetone. Additional info: Molar Mass (g/mol) acetone = 58.05 ethanol = 46.07 Density (g/mL) acetone = 0.7899 ethanol = 0.7893 ... 
chemistry
2. 0.300 kilogram chloroform(chlorine calcium3)and 21.0grams eucalyptol(carbon10 hydrogen18 oxygen 3. what is the concentration of a solution of sodium chlorine water containing 1.170grams solute in 100moles solution 4, what is the % by volume of a solution containing 30.... 
chemistry
An empty beaker weighs 39.17 g. a) When completely filled with water, the beaker and its contents have a total mass of 406.25 g. What volume does the beaker hold? Use d =1.00 g/mL as the density of water. for A i got 367.08 but I don't know for this b) How much would the ... 
chemistry
A stock solution of 0.0100 M KMnO4 is diluted by taking 15.5 mL of it and diluting it to 100.0 mL. From this diluted solution, 5.00 mL is taken out and diluted to 100.0 mL. What is the concentration of the solution obtained in the end 
chemistry
If 15.0 mL of a 1.5M HCl solution at 22.5 degrees C is mixed with 25.0mL of a 1.5M NaOH solution at 21.5 degrees C that is in a calorimeter, and the final mixed solution temperature ends up at 28.5 degrees C, what is the balanced equation for this reaction? 
chemistry
An aqueous solution of nitric acid is standardized by titration with a 0.121 M solution of calcium hydroxide. If 24.5 mL of base are required to neutralize 15.4 mL of the acid, what is the molarity of the nitric acid solution? 
chemistry
A 0.0875 M solution of aqueous ammonia was titrated with a solution of sulphuric acid. If 25.00 mL of the ammonia solution required 30.66 mL of the acid to reach the endpoint, calculate the molarity of the acid. NH3(aq) + H2SO4(aq) ¨ (NH4)2SO4(aq) 
chemistry
A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular weight of this ... 
chemistry
A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular weight of this ... 
chemistry
15ml of 0.325M NaOH is delivered into 35ml HOBr solution of unknown concentration.The pH of the final solution is 7.48. Ka for HOBr is 2.0 x 109at 25C. Find the number of moles of OBr and HOBr in the final solution. 
Chem Two
When 2.25 g of a nonelectrolyte solute is dissolved in 125 mL of water at 22 °C, the resulting solution exerts an osmotic pressure of 955 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of the solute? 
chemistry
5.85g of sodium chloride is dissolved in 250mL of solution. Calculate: a)the molarity of the solution b)the mass percentage of the solute. can we use the given volume(i.e,250mL as total volume of the solution or volume of water in this problem? 
chemistry
Which of the following is not true in a dynamic equillibrium describing a saturated solution? Choose one answer. a. solid crystalizes from solution b. solid dissolves in the solution c. concentration of dissolved solute remain constant d. rate of dissolving is double the rate ... 
Physics
A biotech company produces a solution with an active biomass of 8.7604x10^6 cells per litre of solution. The solution is shipped by tanker truck with a volume of 4.16462x10^1 m3. How many cells are being sent per shipment, expressed to three significant figures? 
chem 101
We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.590 grams. What is the molarity of the AgNO3 solution? Answer in units of M 
chemistry 101
We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.590 grams. What is the molarity of the AgNO3 solution? Answer in units of M 
science
Pop quiz time!!! I know the answers, but do YOU?? 1)What is a property of matter? 2)Examples of physical properties. 3)Examples of CHEMICAL properties 4)Provide example of what you might want to know to calculate the density of an object. 5)Provide an example of what you might... 
chemistry
Acetic acid is known to be a weak acid. What will happen to the acidity of the solution when sodium acetate is added to acetic acid? A. The solution will become more acidic. B. The pH will remain the same. C. The solution will become less acidic. D. The solution will become ... 
chemistry! URGENT
A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 10.0 mg of fluoxymestrone in enough water to give a total volume of 500.0 ml. A 100.0 micro liter aliquot (portion)of this ... 
SCIENCE
The size, mass, and arrangement of atoms affect the density of a substance. If a substance has a low density, what can you guess about the size, mass and arrangement of the atoms that make up that substance? 
Physics
An empty relative density bottle has a mass of 30g. When filled with paraffin,its mass is 70g. Calculate the mass of the bottle when it is filled with water. (relative density of paraffin=0.8) 
Chem 400
Direct reaction of solid iodine (I2) and gaseous chlorine (Cl2) produces an iodine chloride,(IxCly), a bright yellow solid. 0.678 g of iodine (I2) is mixed with 0.851 g of chlorine (Cl2). After the elements react, some chlorine is left over along with a single compound that ... 
Physical Chemistry HELP!!!!!
A solution of the sugar mannitol ( molar mass 182.2 g/mol ) is prepared by adding 54.66 g of mannitol to 1.000 kg of water. The vapor pressure of pure liquid water is 17.54 torr at 20o C. Mannitol is nonvolatile and does not ionize in aqueous solution. a.) Assuming that ... 
Chemistry
When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When the gas reacts with ... 
Algebra 2/Math
Can you check these thanks. Solve the system by substitution or elimination. 2x+y=1 3xy=14 Answer: (3,5) x3y= 12 2x + 11y= 7 Answer: (39,17) 4x+2y=8 12x+6y=24 Answer: no solution 4x2y=5 2xy= 1 Answer: no solution 4a+3b =6 8ab= 9 Answer: no solution 
Chemistry III
Assume you dissolve 0.240 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.16 102 mL of solution and then titrate the solution with 0.153 M NaOH. C6H5CO2H(aq) + OH (aq) C6H5CO2(aq) + H2O(l) (a) What was the pH of the original benzoic acid solution? (b) ... 
chemistry......plz help
A solution is prepared by dissolving 10.00g of a monobasic salt in a total volume of 1.00litres. Th pH of this solution was measured at 13.07 and a conductivity experiment determined that this salt was completely ionized in solution. What is the molecular weight of this ... 
calculus
solve the following inequality 15x16 less than or equal to 15/x is the point x=0 included in the solution set of the inquality? are the other finite pointsa of the interval included in the solution set? what is the solution set? please show work 
Organic Chemistry
What observed rotation is expected when a 1.44 M solution of (R)2butanol is mixed with an equal volume of a 0.720 M solution of racemic 2butanol, and the resulting solution is analyzed in a sample container that is 1 dm long? The specific rotation of (R)2butanol is –13.... 
chemistry
Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. When 75.0 mL of the NaIO3 solution have been added, what is the concentration of the Cr(III) ion remaining in solution? not sure how to go about this 
Chemistry
A solution made up of 1.00 M NH3 and 0.500 M (NH4)2SO4 has a pH of 9.26. a. Write the net ionic equation that represents the reaction of this solution with a strong acid. b. Write the net ionic equation that represents the reaction of this solution with a strong base. c. To ... 
Physics
An alloy of iron and silver has a total mass of 30 grams and a volume of 20.4cm^3.Calculate the mass of iron only and the volume of silver only. [Density of iron=1.62gcm^3 and density of silver=0.9gcm^3] 
chemistry help DR. BOB
When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density and specific heat ... 
Chemistry
I found the following procedure to prepare starch indicator solution on a website: To prepare starch indicator solution, add 1 gram of starch (either corn or potato) into 10 mL of distilled water, shake well, and pour into 100 mL of boiling, distilled water. Stir thoroughly ... 
Physics
There are two conducting concentric hollow spheres of outer radii and ( ). The thickness of the material of both spheres is . The inner sphere is negatively charged with charge density . The larger sphere is positively charged with charge density . (a) What is the electric ... 
Chemistry Urgent Help Please!
You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above mixture. Assuming the... 
Maths
A flat circular disc, of radius R, can be modelled as a thin disc of negligible thickness. It has a surface mass density function given by f(r,φ) = k(1  r2/R2), where k is the surface density at the centre and r is the distance from the centre of the disc.Using area ... 
Science
The total amount of ice in the Greenland ice sheet is estimated to be 2.85 million cubic km. Assume the Earth's surface is 70% covered by ocean, and that the Earth's radius is 6300 km. How many meters would sea level rise if the entire Greenland ice sheet were to melt? (You ... 
chemistry
25ml of a solution of na2c03 having a specific gravity of 1.25g ml required 32.9ml of a solution of hcl containing 109.5g of the acid per litre for complete neutralization. Calculate the volume of 0.84N heso4 that will be compltetly neutralized by 125g of na2c03 solution The ... 
chemistry
State how you would prepare each solution: 1) 455g of a solution of C3H5(OH)3 in water in which the mole fraction of glycine is .250 2) 755g of 1.4 molality solution of napathalene C10H8 in benzene C6H6. My instructor told us to find the amount of grams in order to get the ... 
physics
When a container of water is placed on a laboratory scale, the scale reads 120 g. Now a 20g piece of copper (of density 8.9 g/cm3) is suspended from a thread and lowered into the water, not touching the bottom of the container. What will the scale now read? The density of ... 
physics
A person's density 980 kg/m3 is floating in saltsaturated water if density 1210 kg/m3. 1. what percentage of the person's volume is submerged? 2. what percentage of the person's volume is above the surface? I found the percent submerged by doing Vsub/Vob, and got that the ... 
science
Which of the following is a nonelectrolyte? A) H 2 SO 4 (sulfuric acid) B) HCL (hydrochloric acid) C) C 3 H 8 (propane gas) D) NaCl (table salt) 
chemistry
Why is the ionic compound NaCl (table salt) able to dissolve in a glass of the molecular compound water (H2O)? 
Chemistry
which substance has a definite shape and a definite volume at STP ? (1)NaCl(aq) (2)Cl2(g) (3)CCl4(l) (4)AlCl3(s) is it 4 because its a solid? Am i right ? 
chemistry
If you had 1L of water, how many grams of NaCl will youi need to mix to the water to lower the freezing point by 24 degrees C? 
Chemistry
For the reaction 2Na (s) + Cl2 (g) > 2NaCl (s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl2 (at STP)? What is the limiting reactant? 
Chemistry
If 0.8000 g of a mineral yields 0.2400 g of NaCl + KCl, and this mixture contains 58.00% of Cl, what is the percentage of Na2O and K2O in the mineral? 
Chemistry
Given 2 moles of NaCl, find the number of moles of Na. If you could show me the exact steps, that would be much appreciated. 
Chemistry
I'm having a brain malfunction... how to calculate how many grams are in a mole of something? How many grams are in 3.80mol of sodium chloride (NaCl)? 
CHEM LAB Help
Weight of the mustard package Sample: 3.02 (g) Weight of the mustard package Solution: 33.3 (g) Trial #1 Trial #2 Trial #3 Weight of Mustard Package Solution Delivered (g) : 1.09 .948 .909 Weight of NaOH Solution Delivered (g) : .354 .304 .269 Concentration of NaOH : 7.48e3 (... 
Science
Please help !!! A student wanted to determine the density of an object made of an unknown substance. She found the mass of the object was 335g. Then she did water displacement to determine the objects volume. The initial volume of the water was 50.0 mL. With the object ... 
Algebra 1
What is the solution to the system? use elimination . 18.6x+ 17.2y=90.2 14.2x+ 3.4y= 35.8 a.(3,2) b.(3,2) c.(2/3,4/9) d.(2,3) IS IT D?? Terry and ed start a lawn mowing business and purchase mowers and equipment for $800. They charge $20 for each lawn and $4 worth of gas ... 
Chemistry
1. Take a clean test tube from the Glassware shelf and place it on the workbench. Add 1 mL your mystery solution to the test tube. 2. PRECIPITATION BY NaC2H3O2(aq) (a) Add 2 mL of sodium acetate solution to the test tube. (b) If a white precipitate forms at the bottom of the ... 
9th Grade Math
For my hw i have to graph the following equations 1) x  3y 5 = 0 and 2x = 1  3y 2) y  3x =5 and 3x = 7 + y 3) x = 3y and x +2 = 11 4) y = 2/5x + 1 and x + 2y +11 After done graphing the equations i have to state if there are zero, one, or many solutions. I have already ... 
biology
if a solution has a pH of 4 mix to a solution that has a pH of 9 what will be the pH of the mixed solution? will it be acidic or base? please show me how to calculate it.please i need the answer before tomorrow morning. thank you so much. I had been to other sites but i didn't... 
chemisty
What volume of HCl gas at 25â—¦ C and 1 atm should be bubbled into 375 mL of a 0.680 M aqueous solution of HClO4 so that the pH of the resulting solution is 0? Assume that all the HCl dissolves and that the volume of the solution does not change with the addition of HCl. 
Chemistry
two solutions are prepared using the same solute solution a: 0.27g of the solute disolves in 27.4g of tbutanol solution b: 0.23g of the solute disolves in 24.8g of cyclohexane which solution has the greatest freesing point change? show calculations and explain. 
Chemistry
two solutions are prepared using the same solute solution a: 0.27g of the solute disolves in 27.4g of tbutanol solution b: 0.23g of the solute disolves in 24.8g of cyclohexane which solution has the greatest freesing point change? show calculations and explain. 
PreAlgebra
Equation M: y = 3x + 4 Equation P: y = 3x + 7 Which of the following options is true about the solution to the given set of equations? No solution One solution Two solutions Ininite solutions I thought it was infinite solutions but i got the answer wrong. 
chemistry
Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemt at a solution: m = dv = 64.6 g of air moles silver =28.35/108=0.26 moles of ... 
Physics
The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of 4.50 A. The radius of crosssection A1 is 0.300 cm. (a)What is the magnitude of the current density across A1? A: 1.59155e2 using J=I/((r^2)pi) (b) If the current density... 
Chemistry
Question: A 0.400 g sample of propionic acid was dissolved in water to give 50.00 mL of solution. This solution was titrated with 0.150 M NaOH. what was the pH of the solution when the equivalence point was reached? I'm not really sure how i would go about setting this up. ... 
Chemistry
A .600 g sample of CaCO3 is disolve in concentrated HCl (12M). the solution was diluted to 250 mL in a volumetric flask to obtain a solution for standardizing the EDTA titrant. 1 What is the molarity of the Ca2+ (calcium ion) in the flask? 2 How many moles of Ca2+ are in a 25 ... 
Chemistry
A 15.0mL solution of H2SO3 is neutralized by 12.0mL of a standardized 1.00M NaOH solution. What is the concentration of the H2SO3 solution? Please reply with the steps on how to do this question so I can learn. I can't find examples or anything related in my textbooks and I ... 
Chemistry
A solution is 0.10M in aqueous NH3. Calculate (a) the number of moles and (b) the number of grams of NH4Cl that must be added to 500mL of this solution to prepare a buffer solution with pH=9.15. You may neglect the volume change due to addition of solid NH4Cl. Kb=1.8x10^5. (... 
Chemistry
Copper (I) chloride, CuCL, has Ksp = 1.9 x 10^ 7.calculate the molar solubility of CuCL in A)pure water, B)0.0200M HCl solution C) 0.200M HCl solution, and d) 0.150M CaCl2 solution. I used the ice table and for a) i got 0.000435 M sort of lost for the rest 
algebra
How many liters of a 20% solution of acid should be added to 10 liters of a 30% solution of acid to obtain a 25% solution? Equation: Answer: 
Chemistry
You use 11 ml of a 1M H2SO4 solution to titrate 6ml of ammonium hydroxide solution. What was the concentration of the ammonium hydroxide solution? 
chemistry
what is the molarity of the solution obtained by mixing 25.0 ml of a 3.00 M methyl alcohol solution with 225.0 ml of a 0.100 M methyl alcohol solution? 
analytical chem
10.00mL of 0.100mol/L HCl solution is add to 10.00mL of 0.100mol/L NaOH solution. what is the pH of the resulting solution? 
MATH
How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution 
math
How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution 
math
How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution? 
Math
How many cc of a 20% solution of a sulfuric acid must be mixed with 100 coffee a 50% solution to make a 25% solution of sulfuric acid 
drawls, math help
can you explain to me just one more thing so i can undestand it. Now i have an equation which is : 3x = 3x + 5 which I know has no solution to it, now whereas the equation 7x + 8 = 8 has zero as a solution. What is the difference between a solution of zero and no solution? I ... 
PHYSICS PLEASE HELP
A large balloon of mass 237 kg is filled with helium gas until its volume is 318 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. (b) Calculate the buoyant force acting on the balloon. ____________N (c) Find the net force on the balloon and... 
Science
True or False? Can someone check to see if I am correct. If not, why? a) Two samples of matter have the same volume must have the same density FALSE: could have different densities b) two samples of matter having the same volume and the same number of particles must have the ... 
science
True or False? Can someone check to see if I am correct. If not, why? a) Two samples of matter have the same volume must have the same density FALSE: could have different densities b) two samples of matter having the same volume and the same number of particles must have the ... 
Physics
A cylindrical wood puck (density = 0.75 g/cm3 ) is placed into a water bath. The density of water is 1.0 g/cm3. The wood puck has a diameter of 11.0 cm and a height of 3.5 cm. When the puck reaches equilibrium in the water bath, how far below the surface of the water will the ... 
chemistry
If 15.0 mL of a 1.5M HCl solution at 22.5 degrees C is mixed with 25.0mL of a 1.5M NaOH solution at 21.5 degrees C that is in a calorimeter, and the final mixed solution temperature ends up at 28.5 degrees C, 1.)what is the balanced equation for this reaction? 2.) what is the ...