a density of 1.0 M solution of NaCL
29,680 results, page 36

Chemistry
How do you calculate the number of g of solute that would be needed to make the following? 2.50X10^2mL of 0.100M NaCl? 
chemistry
How do I determine which of the following aqueous solutions should demonstrate the most ideal behavior? 1.0M MgSO4 or 1.0M NaCl? 
chemistry
To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL 
chemistry
To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL 
Chemistry
Determine the final concentration of 20ml of 5M NaCl of solutions after 30ml of water has been added. 
chemistry
How do I write these compounds in their "true form" or Ionic State? NaCl, CuSO4, NH4OH How do i find the charges? 
Chem 112
Which of the following contains the metal with the highest oxidation number? a. CaCl2 b. NaCl c. FeCl3 d. CuCl2 
Science
In the chloralkali process, the mass of NaCl(s) required to produce 0.793 kg of chlorine gas is _____ kg. 
Chemistry
In the chloralkali process, the mass of NaCl(s) required to produce 0.793 kg of chlorine gas is _____ kg. 
Chemistry II
Arrange the following 0.10M solutions in order of increasing pH: a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH 
Chemistry Dr.Bob222
Arrange the solutions in order of increasing acidity. NaCl, NH4Cl, NaHCO3, NH4CLO2, NaOH 
Chemistry
Which of the following represents lattice energy? None of the reactions Na+(s) + I(s) = NaI (s) Mg2+(g) + 2F(g) = MgF2(s) LiBr(s) = Li+(s) + Br(s) NaCl(s) = Na+ (g) + Cl(g) 
CHEMISTRY
Solution A has pH of 4.6 and solution B has a pH of 8.0 1 What is the (H3O+) in solution A? 2 What is the (OH) in solution B ? 
chemistry
What is th pH of a buffer solution made by dissolving 0.10 mol of formic acid, HCOOH, and 0.10 mol of sodium formate, HCOONa, in 1L of water? What is the molarity of a solution made by dissolving 3.4g of Ba(OH)2 in enough water to make 450mL of solution? Assume that Ba(OH)2 ... 
chemistry
A. Strong Base 1.) What is the concentration of a solution of KOH for which the pH is 11.89? 2.) What is the pH of a 0.011M solution of Ca(OH)2? B. Weak Acid 1.) The pH of a 0.060M weak monoprotic acid HA is 3.44. Calculate the Ka of the acid. 2.) The pH of 0.100M solution of ... 
Chemistry
Compare the g/L solubility of CaCO3 in pure water, a H3O+ (aq) solution with a PH of 3.00 and a H30+(aq) solution with a pH of 1.00. Ksp for CaCO3 is 3.36 x 10^9 CaCO3 (s) + H3O (aq) = Ca (aq) + HCO3 (aq) + H2O (l) (equilibrium equation) Keq= 71 I knew how to do this for pure... 
Chemistry
68.0g of solute were dissolved in 393 mL of benzene. The solution froze at 0.50°C. The normal freezing point of benzene is 5.5°C and the molar freezing point constant is 5.12°C kg/mol. The density of benzene is .879 g/mol. Calculate the molar mass of the solute. 
Chemistry Acids and Buffers
Cyanic Acid is a weak acid HOCN + H2O <> H3O+ +OCN ka= 3.5*10^4 a) if 2.5ml of 0.01 M cyanic acid solution is added to 25.0 ml of a formis acid buffer with ph = 3.70, what is the ratio of [OCN]/[HOCN] in the resulting solution? b) determine the pH of a 0.500 M ... 
Chemistry
What is the molarity of this dichromate solution? A potassium dichromate solution of an unknown molarity was used to titrate a solution of FeSO4 prepared by dissolving a 0.350g of pure iron wire in H2SO4 and reducing the FE3+ produced to FE2+. 36.24 mL of the dichromate ... 
Electrolytic Cells
Hey...can u check my two answers for a and b and can u help on the rest? 8. An electrolytic cell consisting of an aqueous solution of NaCl is set up. Answer the following. a. What is the strongest oxidizing agent present? My answer: Na; sodium b. What is the strongest reducing... 
chemistry Molarity
You have 353 mL of a 1.25 M potassium Chloride solution, but you need to make a 0.50 M potassium Chloride solution. How many milliliters of water must you add to the original 1.25 M solution to make the 0.50 M potassium Chloride solution 
Chemisty
How do I solve what is the mass of a 32.5 mL sample of ethanol if the density of ethanol is .789 g/mL. I know Mass = Density * Volume. So 32.5 mL * .789g/mL = the mass, but I don't know how to solve that. 
chemistry
What is the molarity of a solution when 3L of a 4M solution is mixed with 3L of a 6M solution? 
Help
Is there a website that will help me solve this? I can't find anything. I'm coming up with x=1/3 but I feel I'm doing it wrong. Find all real number solutions to (cubed root 3x8)1=0 If there is more than one solution, separate them with commas. If there is no solution, ... 
chemistry
Assume that 50ml of 0.01M edta solution were added to 25ml of co solution and the excess edta required 20ml of 0.005M mg solution. Calculate ppm co+ present. The answer 942ppm Bob helps me 
Chemistry
Why is a blank solution used in absorption spectroscopy? I know it is to nullify the reflection, refraction, and diffraction that occurs, but if the blank solution was a dilute solution rather deionized water, how would the concentration of Cr(VI)in a sample be affected? 
Chemistry  Science (Dr. Bob222)
Ammonia is a weak base with a Kb of 1.8 x 105. A 100.0 mL sample of 0.13 M aqueous solution of ammonia (NH3) is mixed with 87 mL of 0.15 M solution of the strong acid HCl, calculate the pH of the final solution. A) 2.9 B) 11.1 C) 8.8 D) 5.2 E) None of the above 
Physics  Center of Mass
The density of a 5.0m long rod can be described by the linear density function λ(x) = 145 g/m + 14.2x g/m2. One end of the rod is positioned at x = 0 and the other at x = 5 m. a) Determine the total mass of the rod. b) Determine the centerofmass coordinate. 
CHE 2B
A buffer solution of volume 50.0 mL contains 12.5 mmol HNO2 and 9.25 mmol KNO2. 1. What is the pH of this solution? 2. If 1.00 mmol of Ca(OH)2 is added to the solution, what will be the new pH? 3. If 2.00 mL of 2.00M HCl is added to the original solution, what will be the new ... 
chemistry
Solution A:50cm^3 of 1.0mol dm^3 hydrochloric acid,HCl Solution B:10cm^3 of 2.0mol dm^3 hydrochloric acid,HCl (a)Calculate the number of moles of hydrochloric acid,HCL in each solution. (b)Solution A and B are mixed together. (i)Calculate the number of moles of hydrochloric ... 
Chemistry
A 5.00mL sample of an H3 PO4 solution of unknown concentration is titrated with a 0.1003 M NaOH solution. A volume of 6.55 mL of the NaOH solution was required to reach the endpoint. What is the concentration of the unknown H3 PO4 solution? 
Chemistry
I have asked this question before but I was not clear enough. I want to prepare a 37% w/w solution (in water)of sulfuric acid from 96% sulfuric acid. I need around 500ml, I know it won't be exactly that, I want to know how to use the conversion using density, I've been shown a... 
Chemistry
1.If a solution absorbed violet light, what color would the solution appear to be? ________________ Calculate the concentration of a solution prepared by adding 15.00 mL of 2.00×10^−3 M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then filled to the 50.00 ... 
CHEMISTRY MOLALITY!!!!!
A bottle of wine contains 13.1% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality. i don't know how to get molality. please help!!!! Molality is the number of moles of solute ... 
Geography
What kind of map could you use to show information about a city? a relief map a population density map a political boundary map a vegitation map All of the above You can pick as many as you want, but the question is only worth one point. I think the answers are political ... 
Chemistry
Hello everybody, I'm having difficulty understanding the rationalization behind the strengths of Bronstend Lowry acids and bases and my textbook isn't too helpful. Can someone please expalin to me: (1) What exactly is effective negative charge density? (2) how does ... 
Chemistry
Hi, i'm really desperate! could anyone please help me with this question, I'm stumped. 'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is the volume of NH4Cl ... 
Chemistry 1
A dilute solution of hydrochloric acid with a mass of 614.86 g and containing 0.33004 mol of HCl was exactly neutralized in a calorimeter by the sodium hydroxide in 619.41 g of a comparably dilute solution. The temperature increased from 15.529 to 19.691°C. The specific heat ... 
Astro
Suppose you lived on a planet with the same radius as the Earth, but it had a density 2.99 times Earth's density. Your weight would be different on this planet. Find how much you would weigh on this planet divided by your weight on Earth 
12th grade chemistry
It is required to titrate ethanol solution .Being available a 0.2mol/l potassium dichromate solution and 4mol/l sulfuric acid solution on the presence of a convenient indicator. a)indicate the glassware used for titration. b)give a brief description of the procedure followed .... 
Chem
Why does sodium chloride not conduct electricity as a solid but when melted, does conduct electricity? Thanks Solid NaCl consists of a three dimensional array of Na^+ and Cl^. Even though the ions are present, the ions are not free to move about; i.e., they are held in place ... 
chemistry
How would I go about doing this question, can someone explain it step by step please, my answer I keep getting is 1.17m CaCl2, but the answer is 1.35m CaCl2? A 1.30M solution of CaCl2 in water has a density of 1.1g/mL/ What is the MOLALITY? Also, when for questions with ... 
Chemistry
A solution is labeled as ~8M NaOH. How many mL of this solution would be needed to prepare 750mL of a ~0.2M NaOH solution? 
science
Calculate the molarity of each solution. a) 1.0 mol KCl in 750 mL of solution b) 0.50 mol MgCl2 in 1.5 L of solution 
chemistry
A solution of NaOH(aq) contains 6.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C. 
chemistry
A solution of NaOH(aq) contains 6.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C. 
Chemistry
Pure water is added to 25.0 mL of a 1.00 M HCL solution. The new solution has a volume of 2.00 L. What is the pH of the new solution. 
Chemistry
The of hydroxylamine, , is . A buffer solution is prepared by mixing 120 of a 0.34 hydroxylamine solution with 60 of a 0.25 solution.Solve for the PH 
Chemistry
A solution of NaOH(aq) contains 5.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C. 
Chemistry
A solution of NaOH(aq) contains 5.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C. 
Chemistry
A 26.8 mL sample of a solution of RbOH is neutralized by 15.71 mL of a 1.918 M solution of HBr. What is the molarity of the RbOH solution? 
Chemistry
Titration of 12.50 mL of HCl solution requires 22.50 mL of 0.1250 M NaOH solution. What is the molarity of the HCl solution? 
science
I have 20%solution ofH2So4,100litres. I want 40%solution of 200lit. How many liter mix solution ofH2So4 of 98% 
Chemistry
A solution of NaOH(aq) contains 5.4 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C. 
Chemistry
You need to make 40.00 ml of a 0.045M NaOH solution from a 2.1M stock solution. How many ml of the stock solution are needed? 
physics
A square pool with 100mlong sides is created in a concrete parking lot. The walls are concrete 87 cm thick and have a density of 2.5 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.42. What is the maximum possible depth of the pool? (The ... 
physics
A square pool with 100mlong sides is created in a concrete parking lot. The walls are concrete 87 cm thick and have a density of 2.5 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.42. What is the maximum possible depth of the pool? (The ... 
Chemistry
someone help pls!! percentage of ethanol in the "blood" sample on a v/v basis is 0.0143% v/v. is the "blood" sample analysed over the limit for driving? (legal limit is 80mg alcohol per 100mL blood. assume the density of ethanol is 0.785g/mL and the density of blood is 1.0g/mL... 
Chemistry
A given solution contained potassium chloride, KCl, and hydrochloric acid. 25 cm3 of it needed 24.80 cm3 of 0.0986 M sodium hydroxide solution to neutralize the acid, and the neutral solution then required 23.55 cm3 of 0.2 M silver nitrate, AgNO3, solution to precipitate all ... 
CHEMISTRY
Which of the following solutions contain the greatest total ion concentration? a) one mole of potassium chloride dissolved in 1.0L of solution b)one mole of sodium phosphate dissolved in 1.0L of solution c)one mole of ammonium carbonate dissolved in 1.0L of solution d) one ... 
CHEMISTRY
Which of the following solutions contain the greatest total ion concentration? a) one mole of potassium chloride dissolved in 1.0L of solution b)one mole of sodium phosphate dissolved in 1.0L of solution c)one mole of ammonium carbonate dissolved in 1.0L of solution d) one ... 
College Chemistry
I need help with this question!! a sample of pure KHP weighing .8097g dissolved in water and titrated with 40.25 mL of NaOH solution. The same NaOH solution was used to titrate a solution of a weak diprotic acid H2X. A sample of 0.18694g of the weak acid was first dissolved in... 
chemistry
Because solution pH is a measurement of either [H3O+] or [OH] concentration, the acidic or basic nature of the acids and bases used in this experiment can be ascertained by inspecting just the density (electrostatic) potentials from the products (which contain either H3O+ or... 
algebra
Which of the following ordered pairs is included in the solution set of the system, y < 2  2x and y > 2x 3? (4, 0) (0, 0) No Solution (3, 4) 2. Choose all correct answers. Which of the following are solutions of the system? x < 3 and x + y < 5 (2, 2) (4, 2) (2, ... 
physics
a raft is consttructed of wood having a density of 6000kg/m3. the surface area of the bottom of the raft is 5.7m2, and the volume of the raft is .60m3. when the raft is placed in fressh water having a density of 1000kg/m3, how deep is the bottom of the raft below water level. 
Physics
Hey guys  this problem is pretty tough for me...any help? Don't know what to do.... In seawater, a life preserver with a volume of 4.00×10^−2 m^3 will support a 76.0 kg person (average density 980 kg/m^3), with 20.0 % of the person's volume above water when the life ... 
Chemistry
2. You have a sugar solution (solution A) with concentration x. You pour onefourth of this solution into a beaker, and add an equivalent volume of water (solution B). a) What is the ratio of sugar in solutions A and B? b) Compare the volumes of soutions A and B. c) What is ... 
math
given the equation 3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. infinite solution: (3x +2y =) * 3 > 9x +6y =12 y=3/2x+4 9x +6y =12 I think we have to multiple the first equation by nonzero ... 
Math
A scientist is mixing a chemical solution for an experiment. The solution contains 3/8 ounce of a chemical and 1/6 ounce saline solution. What is the unit rate of chemical to saline solution? 
math
One solution contains 20% acid and a second solution contains 50% acid. How many ounces of each solution should be mixed in order to have 60 ounces of a 30% acid solution? 
science ~CHECK MY WORK PLEASE~
1) Both carbon dioxide and water are pure substances. How are they similar to each other? A. both substances have a set ratio of atoms that cannot be separated by physical means. B. both substances have a set ratio of atoms that can be separated by physical means. C. both ... 
Chemistry
Nitric acid is commonly purchased as a 16 M solution, which has a density of 1.41 g/mL. Convert this molarity to a) mass percentage, b) molality, c) mole fraction. A) 16molHNO3(63.02HNO3/1MolHNO3)=1,008.32gHNO3  1,000gH20(1MolH20/1.41ml/g)=1410ml/mol w/w= 1008.32/1410= 71.5%w... 
chemistry
The administration of 100mg or more of morphne (molar mass 283) to a patient would be lethel. which of the following would you consider to be a safe dose. a. 1ml of a 1 percent solution (w/v) b. 1ml of a 0.05 M solution c. 1ml of a 100ml/mg solution d. 0.5ml of a 1M solution e... 
chemistry
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The... 
Chemistry  DrBob222
Alright, I've made a list of reactions that would produce precipatations. NaCl + Zn CaCl2 + NaOH CaCl2 + Zn CaCl2 + Na2SO4 CuSO4 + NaOH CuSO4 + Zn NaOH + AgNO3 NaOH + Zn BaOH2 + AgNO3 BaOH2 + Zn BaOH2 + Na2SO4 So this way I can figure if it is NaCl, CaCl2, CuSO4, NaOH,Ba(OH)2... 
chemistry
calculate final volume required to reach 1% solution when 0.2g of sample is predigested with nitric acid 3mL then after 1day, if 1ml sample from this solution is digested in 10ml solution and diluted in 50 mL distilled water. 
CHEMISTRY/
A student takes a 1.00 mL aliquout of 5.00*10^4 M HCl solution and dilutes it to the mark with water in a 1000.0 mL volumetric flask. (a)What is the expected pH for the final solution at 25C? (b)What would be the expected pH if this solution were later used at a temperature ... 
calculus
Please help with this question. I have a general solution to a differential equation of 18y^3/2= TOP LINE OF FRACTION is 2(x^26x+23)^3/2 and this is divided by 3. What is the particular solution for which y=2 when x=1. Then I need this particular solution in explicit form. ... 
Chemistry
A solution of 220mL of 0.200M Koh is mixed with a solution of 120mL of 0.240M NiSO4. 1.Determine limiting reactant? 2.Calculate the mass of precipitate formed? 3.Calculate the molarity of all ions left in the solution? 
chemistry
A solution of 220mL of 0.200M Koh is mixed with a solution of 120mL of 0.240M NiSO4. 1.Determine limiting reactant? 2.Calculate the mass of precipitate formed? 3.Calculate the molarity of all ions left in the solution? 
Chemistry
A chemist has 250.0 mL of a bright blue (caused by Cu+2) aqueous solution that contains 21.16 g of CuCl2. He adds 12.0 g of finely ground silver to the blue solution and lets the solution sit covered overnight. When he returns he finds: 
chemistry
a solution is prepared by mixing 1.0 grams of benzen(c6h6) in 100g of water to create a solution total volume of 100ml.calculate the molarity,mass percent,mole fraction and molarity of benzene in the solution 
Chemistry 1
Sodium carbonate reacts with a solution of HCl solution with the evolution of gas (CO2) to yield a solution that is neutral. If 0.265 grams of sodium carbonate are required to neutralize 1.00 mL of HCl solution, what mass (in grams) of sodium carbonate will be required to ... 
Geography (Ms. Sue)
Which has the higher population density: The United States or Russia and the Republic? Why? A: I believe the United States has the higher population density because ? 
PHYSICS HELP
a cube of wood with a density of 0.78g/cm^3 is 10cm on a side. When placed in the water what height will the block float above the surface? what am i doing wrong here: height= Desity of cube* volume of cube and devide by the density of water * area of the cube H= (0.78g/cm^3 *... 
Physics
The average human has a density of 950 kg/m3 after inhaling and 1018 kg/m3 after exhaling. (a) Without making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a lake with a water density of about 1230 kg/m3) in each of these... 
PHYSICS NEED HELP FAST
a raft is consttructed of wood having a density of 6000kg/m3. the surface area of the bottom of the raft is 5.7m2, and the volume of the raft is .60m3. when the raft is placed in fressh water having a density of 1000kg/m3, how deep is the bottom of the raft below water level. 
Algebra 1
A chemist has 10% acid solution and 60% acid solution. HOW many liters of each solution does the chemist need to make 200 L of a solution that is 50% acid? 
Chemistry
The reaction described takes place in solution in a coffecup style calorimeter. We will assume that the cups absorb or release a negligible amount of heat so we will not need to worry about the calorimeter constant or qcal. If the total mass of the solution in the calorimeter... 
BLD 414
A liquid solution of formaldehyde is 37.0% pure. This solution has a specific gravity of 1.037. The molecular weight of formaldehyde is 30.0. to 1.00 ml of this impure stock solution is added quantity sufficient to take the total volume to 500ml. If 1.00 ml of this solution is... 
Chemistry
1) If I add 10 grams of salt into 0.1 L of water, what is the molarity of the solution? 2) Serial dilution is a common technique to make low concentration solutions. Each Serial Dilution involves taking half the solution and mixing it with a solvent, to halve the concentration... 
Chemistry
A solution is prepared by pipetting 5.00 mL of 0.0983 molar HCl into a 100.0 mL graduated cylinder, and adding enough water to prepare 50.0 mL of solution. 1.The concentration of this solution is ____________M 2.The pH of this solution is ____________ Because HCl is a strong ... 
Chemistry
158.5 mL of a AgNO3 solution at 5.0M was combined with a 3.5M CaCl2 solution. 110.5g of AgCl was recovered. Given that the CaCl2 is the limiting reagent, how many milliliters of the 3.5M CaCl2 solution was used? 
Chemistry
An aqueous solution of a monoprotic acid is prepared. This acid is known to have a pKa of 8.6. If the acid is 37.5% ionized when in solution, what is the pH of the solution? Not really sure where to start with this question? Thanks in advance 
Science ~ Structures and Properties of Matter
1) Both carbon dioxide and water are pure substances. How are they similar to each other? A. both substances have a set ratio of atoms that cannot be separated by physical means. B. both substances have a set ratio of atoms that can be separated by physical means. C. both ... 
physical science
how much sugar is dissolved in 500 grams of a solution if the solution is 70 percent sugar by mass? Also, What is the concentration of a solution that contains 45 grams of sugar in 500 grams of solution? thank you 
science
which of the following compunds int he liquis phrase can be considered a electrolyte? a)co2 b)cu0 c)h2o d)h202 e)nacl 
Chem
Which chloride should exhibit the most covalent type of bond? WHY? A) NaCl B) KCl C) BaCl2 D) BeCl2 E) CaCl2 
Organic Chem
what is the equation including the mechanism for the reaction of 1butanol with NaCl+ NaBr in H2S04 What are the equations for the side reactions? 
Chem
Which solvent, water or hexane (C6H14), would you choose to dissolve each of the following? 1. NaCl 2. HF 3. Octane 4. (NH4)2SO4