a density of 1.0 M solution of NaCL
29,659 results, page 33

chemistry
4. Compound B is provided as a solution and has a specific gravity of 0.65 (Specific gravity is the weight in grams per mL of solution) and is known to be 90% pure (each gram of compound B solution only contains 90% Compound B and 10% of degradation products). 4.5 mL of ... 
science
Compound B is provided as a solution and has a specific gravity of 0.65 (Specific gravity is the weight in grams per mL of solution) and is known to be 90% pure (each gram of compound B solution only contains 90% Compound B and 10% of degradation products). 4.5 mL of Compound ... 
Algebra Help
1. Verify that (4, 12) is the solution to the system. Show work to justify your answer 2x+y=5 5x2y=6 2. Solve the system by graphing. State the solution. x + y =2 2y – x = 10 3. Solve the system by substitution. State whether the system has one solution, infinite ... 
Chemistry
When 0.702 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 114C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ... 
Chemistry
When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ... 
Chemistry Lab
When 0.671 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 109C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ... 
Chemistry
Tartaric acid has two acidic (ionizable) hydrogens. The acid is often present in wines and precipitates from solution as wine ages. A solution containing an unknown concentration of the acid is titrated with NaOH. It requires 22.62 mL of 0.2000 M NaOH solution of titrate both ... 
Chemistry
An unlabeled bottle containing a solution was found in the lab. It contains one of the following: AgNo3, CaCl2, or Al2(SO4)3. Describe how you would test the solution to determine which solution it is. Include equations in your answer. 
chemistry
A student dissolved 3.65 g of hydrogen chloride gas,HCL in water to make 1.0dm^3 of solution.Calculate the volume of a 0.1 mol dm^3 barium hydroxide,Ba(OH)2 solution required to completely neutralise 25.0 cm^3 of the acid solution.(RAM:H,1;CL,35.5) 
chemestry
To 400mL of a 0.1 M CH3COOH solution(Ka=1.8 x 105),two subsequent additions of 100mL of 0.2 M NaOH solution have been done.determine the solution pH after each addition. Drbob,I don't understand this problem how to solve.Can you help me and give me the full calculation. 
CHEMISTRY
1.) A solution is prepared by dissolving 5.00 g of stannic nitrate in enough water to make 250.0 mL of stock solution. A 15.0 mL aliquot (portion) of this stock solution is then removed and added to 75.0 mL of water. Calculate the concentrations of all ions in the final ... 
Chemistry
How would you usually prepare starch indicator solution for iodine titrations? Can the solution be stored for a few months in the fridge? I noticed that sometimes the starch indicator solution in the fridge has turned cloudy, in which case we should prepare a new solution? 
chemistry
The concentration of a certain ionic compound in aqueous solution is 0.186mol/L . It is only solute in the solution. The concentration of pottassium ions in the same solution ia 0.558mol/L. Explain why the concentrations of the ions in the solution are different. What might ... 
Chemistry
If some NH4Cl is added to an aqeous solution of NH3: A. pH of solution will decrease B. PH will not change C. pH will increase D. NH4Cl cannot be added to NH3 E. The solution will not have pH I think the answer is B, because if NH4Cl is added to the solution of NH3, then ... 
Chemistry Help Please!
1) You have a protein at 20 ug/ml. Its MW =10,000. What is the concentration in molarity? Show work please! 2) You are asked to make 30 mL of a solution at 0.03M using the 0.10M stock solution. How many mililliliters of water do you use to make this solution? How many ... 
Chemistry
1.) A convenient method of determining the volume of a container of irregular shape is to fill it with a liquid of known density and measure the mass. An empty Erlenmeyer flask marked "10 mL" weighs 26.3251 g. When filled with mercury, with density = 13.5340 g/mL (at 25.0 C), ... 
science
(1) what measurements and what calculation would you need to make in order to determine the density of a rectangular wooden block? (2) a student announced that she had made a sample of a new material that had a density of 0.85g/cm3. from the inforation given, are you able to ... 
Chemistry II
A solution is prepared by placing 72.8 g of magnesium chloride in 120 g of water at 22oC. a)What is the boiling point of the solution? b)What is the freezing point of the solution? 
science
A 60.0mL 0.508 M glucose (C6H12O6) solution is mixed with 115.0 mL of 2.43 M glucose solution. What is the concentration of the final solution? Assume the volumes are additive. 
Biochem
A buffer solution is prepared by mixing 200 mL of 0.2 M salt solution and 400 mL of a 0.2 M acid solution. What is the concentration of the resulting buffer? ~what is the pKa? 
Chemisty
A solution is prepared by dissolving 3.44 g of sucrose, C12H22O11, in 118 g of water. a) What is the molality of the resulting solution? b) What is the mole fraction of water in this solution? 
AP Chemistry
If 435 mL of 2.7 molar HCl solution is added to 128 mL of 3.2 molar Ba(OH)2 solution, what will be the molarity of BaCl2 in the resulting solution? Answer in units of M 
math weighted averages
Santa tasted 500 ml of a 60% solution of eggnog. How many milliliters of a 30% eggnog solution should be added to obtain a 50% solution? 
Chemistry
If 258 mL of 2 molar HCl solution is added to 342 mL of 4.3 molar Ba(OH)2 solution, what will be the molarity of BaCl2 in the resulting solution? Answer in units of M. 
AP CHEM
If 488 mL of 2.9 molar HCl solution is added to 191 mL of 2.8 molar Ba(OH)2 solution, what will be the molarity of BaCl2 in the resulting solution? Answer in units of M. 
Science
A solution contains 60g of sugar in 480g of water calculate the concentration of solution in terms of mass by mass percentage of the solution 
Chemisty
Which solution contains more acid, 50ml of a 0.20 N HCL solution or 50 ml of a 0.20 N acetic acid solution? Which has a higher hydronium ion concentration? Which has a lower pH? 
Chemistry
A solution is prepared by mixing 8 mL of .2 M Fe(NO3)3, 10mL of .001 M NaSCN, and 7 mL of .1 M HNO3 a. calculate the concentration of Fe3+ in the solution b. calculate the SCN in the solution 
Algebra 2
write a quadratic equation in the variable x having the given numbers as solution. Type the equation in standard form, ax^2+bx+c=0 solution 4, only solution 
chemistry
A solution contains 1.72 103 M Ca(NO3)2. Determine the mass of the Ca2+ ions in 1.8 mL of this solution. How many nitrate ions are there in 3.0 106 L (3.0 µL) of this solution? (i keep doing these two wrong but not sure why) 
Chemistry
work out the [OH], [H+] and pH of the solution formed when 0.500L of 0.250 M hydrochloric acid solution is mixed with 0.500 L of a 0.250 M calcium hydroxide solution. 
chemistry
If the endpoint in the titration of KHC8H4O4 solution with the NaOH solution is mistakenly surpassed, will the molar concentration of NaOH solution be reported too high or too low? 
chemistry
calculate the osmotic pressure of a solution obtained by mixing 100ml of 0.25M solution of urea and 100ml of 0.1m solution of cane sugar at 293k 
AP Chemistry
A given weak acid HZ has a Ka=1.7×10−6. What is the H3O+ concentration of a solution of HZ that has a concentration of 0.78 mol/L? What is the pH of this solution of HZ? What is the percent ionization of HZ in this solution? Answer in units of % 
chemistry
a solution is prepared by dissolving145 grams of NaNO3 in 100 grams of water at 80*C. the solution is then cooled to 10*C. how much of the solute will come out of the solution? 
Chemistry
calculate the molarity of cl ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride 
chemistry
0.1 mol of an organic acid is added to 600 ml of 0.5M KOH solution. The resulting basic solution can be neutralized by 200 ml of 0.5 M HCl solution. Which acid is ot? 
Chemistry
A chemist needs to prepare a buffer solution of pH 8.80. What molarity of NH3 (pKb = 4.75) is required to produce the buffer solution if the (NH4)2SO4 in the solution is 1.8 M? 
chemistry
a solution containing 13.75g of barium hydroxide is to be neutralized with a 0.150 mol/L phosphoric acid solution. what volume of the acid solution will be required? 
AP Chemistry
The reaction of sodium oxide with water would form: 1. a neutral solution. 2. a basic solution. 3. an acidic solution. An explanation would be appreciated too!! 
chemistry
0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the percentage of free s03 in the smaple solution. The answer 20.6% Assume that 50ml of 0.01M edta solution were added to 25ml of solution and the excess edta... 
Physics
Suppose the density of the Earth was somehow reduced from its actual value to 1300 kg/m3. What would be the value of g, the acceleration due to gravity, on this new planet? Assume the radius does not change. I know that density = mass/volume & the volume of a sphere = 4/3pir^3... 
Chemistry
Can someone help me with these two questions? Thank you! a.) Describe (give instructions) how you would prepare 7.00 L of 0.750 M K2CrO4 from a 2.25 M K2Cro4 stock solution b.) A stock solution containing Ba2+ ions was prepared by dissolving 23.0 grams of pure barium metal in ... 
chemistry
You have a 1.0 M stock solution of H2SO4 in a large flask. You need to dilute this to make a 0.25M solution of H2SO4 for an experiment. If you need exactly 100.0mL of the diluted solution, how would you make the diluted solution? 
math :(
No solutions, one solution, or infinitely many solutions??? 2(x – 3) = 2x No solution* one solution infinitely solution 3(y – 3) = 2y – 9 + y No solution one solution infinitely solution 10x – 2 – 6x = 3x – 2 + x No solution one solution infinitely solution 4(x + 3... 
Physics (Please, it's a minor error)
A rectangular block has dimensions 1.5cm x 3.2cm x 3.9cm and a mass of 61g. Determine the density in SI units My taking on the question, Mass= 0.061kg Volume= 0.1872m Density=0.061kg/0.1872m=0.3258547kgm^3 Can someone please tell me where I'm going wrong? 
7th grade science
a textbook has 2,000 g mass/ 4,000 cm to the 3rd pwr what is the density how do you figure this out I went home sick today and this is the homework I missed in class today. Can anybody tell me how to do this I have a work sheet on how to figure mass density and volume. Its due... 
ChemistryQuestion 4
What mass (g) of the solute C3H8O3 should be mixed with 8270 mL of the solvent H2O to produce a solution that is 1.02 m glycerol. Molar Mass (g/mol) C3H8O3 92.09 H2O 18.015 Density (kg/L): C3H8O3 1.261 H2O 0.9982 Name/Formula: glycerol C3H8O3 water H2O 
Chemistry
Density is an important property of matter. The density of 25oC dry air at sea level is 1.29 g/L. What is the mass unit for dry air? What is the volume unit for dry air? 
physics
an aluminum object has a mass of 27 kg & a density of 2700 kg/m^3. it is hung from a rope under the surface of water (density=1000 kg/m^3). what is the volume of the object and the tension in the string, while the object hangs from it & also under the surface of the water? 
Physics
Calculate how much work does a block of aluminum of mass 100 kg do if it is heated at P = 1 atm from 20 degrees to 660 degrees. n.b.  The density of solid aluminum at 20 degrees is p= 2.7 g/cm^3. When it is liquid at 660^C the density of the liquid state is decreased to 2.38 ... 
Physics
The density of copper is 9.8×10^3 and the density of gold is1.9×10^4. When the two wires of these two metals are held under the same tension the speed in the gold wire is found to be half of that of the copper. What is the ratio of the diameters of the two wires? 
Solution Stoichiometry
If 75.0 mL of an AgNO3 solution reacts with enough Cu to produce .25g Ag by single displacement, what is the molarity of the initial AgNO3 solution if Cu(NO3)2 is the other product? 
Chemistry
A saturated solution of Mg(OH)2 is prepared having a large excess of Mg(OH)2. Sn(NO3)2 is added to the solution. Ksp = 1.9 x 10^11 for Mg(OH)2 and Ksp = 6.0x10^26 for Sn(OH)2. What [Sn2+] is required so that the [Mg2+] in solution will be 0.15 M? 
Chemistry
A solution is prepared by dissolving 130 g of NaNO3 in 100 g of water at 80°C. The solution is cooled to 0°C. How many grams of compound remain in solution? How many grams of solid are formed? 
Chemistry
A solution is prepared by dissolving 130 g of NaNO3 in 100 g of water at 80°C. The solution is cooled to 0°C. How many grams of compound remain in solution? How may grams of solid are formed? 
Buffer
You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 93 mL of 1.00 M NaOH solution? 
Chemistry
A solution is prepared by adding of KOH to 1 liter of water. The resulting solution has an [OH negative]of 1 * 10 negative 3. What would be the pOH of this solution? Can you show me how you came up with this answer? Thank you. 
chemistry
A 20.0 mL sample of an aqueous HClO3 solution is titrated with a 0.0275 M KOH solution. The equivalence point is reached with 28.5 mL of the base. The pH of the HClO3 solution, before titration, is 
chemistry
you dissolve 6.55g of potassium nitrate in enough water to make a 250ml solution. if you add 1.25 l of additional water to this solution.what is the molarity of this new solution. 
Chemistry
How do you calculate the pH of two acids in a solution? Examlp: a solution is made by adding 50mL acetic acid(Ka=1.76x105) to 50mL 1.00x103M HCl. What is the Ph of the solution? 
Chemistry
A buffered solution is made by adding 48.6 g C2H5NH3Cl to 1.00 L of a 0.77 M solution of C2H5NH2. Calculate the pH of the final solution. (Assume no volume change. Assume that all solutions are at 25°C.) 
chemisrty
A 21.00 sample of 0.3254M Hcl solution requires 26.09 ml of NaOH solution for complete neutralization. Calculate the volume of NaOH solution in liters, required for the titration. 
chemistry
A beaker contain 300.ml of a 0,20 M Pb(NO3) solution. If 200 ml of 0,20M solution og MgCl2 is added to the beaker, What will be the concentration of Pb2+ ions in the resulting solution 
Grade 11 Chemistry
calculate the molarity of cl ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride 
Chem Help!!!
A 1.00 mL aliquot of solution A was diluted to 50.00 mL using 0.02 M Fe(III), forming solution B (reaction 2) By looking at this how many moles of sodium salicylate were in the 1.00 mL aliquot used to prepare solution B? 
chemistry
In a chemistry experiment, a student measures the density of iridium (Ir) metal as 21.52 g/cm3. The actual density of Ir metal is 22.65 g/cm3. What is the percent error of the student's measurement? 
Chemistry 101
A spherical bass has a diameter of 1.00 inch and a mass of 2.00 grams. Will the ball float or sink water? Remember that if the ball's density if greater than 1.00 g/mL the density of water, the ball will sink. Also remember to use dimensional analysis. 
Chemistry 101
A spherical bass has a diameter of 1.00 inch and a mass of 2.00 grams. Will the ball float or sink water? Remember that if the ball's density if greater than 1.00 g/mL the density of water, the ball will sink. Also remember to use dimensional analysis. 
chem
A student based the analysis of Cu(II) in a sample on the formation of the blue complex [Cu(H2O)6]+2. A standard solution was made when 1.276g of pure copper wire (MM= 63.546g/mol) was weighed, dissolved in concentrated HNO3, and diluted to 1.00x102mL. The stock solution was ... 
Chemistry
In a acidbase titration, 22.81 mL of an NaOH solution were required to neutralize 26.18 mL of a 0.1121 M HCl solution. What is the molarity of the NaOH solution? 
Math115
Solve by the elimination method. 5x15y=2 and 5x15y =3 Is there a solution of an ordered pair? Are the infinitely many solutions? or is there no solution? I got that there is no solution. 
UCI
A student is given a stock solution of 1.54E04 M. How much stock solution is needed to make 100 mL of a 1.60E05 M solution? 
Chemistry
A 25.00 mL sample of KNO3 solution was diluted to 1.00X103 mL. The concentration of the final solution is 0.00383 M. Calculate the concentration of the original solution? 
chemistry
if A(aq) + B(aq) = AB(aq), and the molarity of A in the solution is 0.60 M and the molarity of B in solution is 0.60M, calculate the enthalpy of the reaction, delta Hrxn, for the formation of 1 mole of AB solution. 
chemistry
if A(aq) + B(aq) = AB(aq), and the molarity of A in the solution is 0.60 M and the molarity of B in solution is 0.60M, calculate the enthalpy of the reaction, delta Hrxn, for the formation of 1 mole of AB solution. 
Chemistry
You are titrating 35.00 mL of a 1.20 M solution of HCOOH with a strong base. If you add 1.00 mL of a 3.60 M solution of sodium hydroxide, what is the final pH of the acid solution? The Ka for HCOOH is 1.8 X 104. 
chemistry
how to prepare 0.250l of 0.750 M HCL solution,startin with 2.00 M HCL solution. what volume in liter of 2.00m solution we need? 
physical chemistry
find the ph of the solution that results from the addition of 25ml of 0.1mol/l NaOH solution to 50ml of 0.1mol/l HCL solution? 
Science
25 mL sample of KNO3 solution was diluted to 1.000x10^3 mL. The concentration of the final solution is .00383 M. Calculate the concentration of the original solution 
chemistry
20.0 mL of a 2.2 M lead (II) nitrate solution is mixed with 100.0 mL of a 0.75 M magnesium sulfate solution. What is the concentration of nitrate ions in the resulting solution? 
Chem
The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.265 M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution? 
Chemistry
A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate the molarity of the magnesium chloride ... 
chemistry.
a quantity of 25 ml of a solution containing both Fe2+ and Fe3+ ions is titrated with 23 ml of .02 M KMnO4 solution. as a result all the Fe2+ ions are oxidised to Fe3+ ions. Next the solution is treated with Zn metal to convert all Fe3+ ions to Fe2+ ions. Finally, the solution... 
physics
for the current density equation (I) , solve for dV/dx when I = 0 I =  [ uz2F[C] dV/dx + uzRT d[C]/dx] According to your equation. dV/dx= uzRT/uz2[C] d[C]/dx I am uncertain what your symbols mean. It's supposed to be the current density equation I think?? My teacher also gave... 
electromagnetic just put the rule
In a certain material for which µ = 6.5 o , H = 10ax + 25ay  40az A/m Find (a) The magnetic susceptibility xm of the material (b) The magnetic flux density (c) The magnetization, (d) The magnetic energy density I just want the rule of them 
chemistry
When 24.30mL of .5 M H2SO4 is added to 24.30 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'm trying to find the solubility of Ca(OH)2 in .0125 mol/L aqueous NaOH. Here is my data: Vol of solution used per titration: 20mL Conc of HCl: .1201 mol/L Average Titre: 4.71 I need to calculte: 1. the TOTAL [OH] in the saturated solution of Ca(OH)2 in NaOH 2. the [OH] due... 
science
Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is 1.00 g mL1, and assume no change in volume ... 
Chemistry
A sample of 25.00 mL of vinegar is titrated with a standard 1.02 M NaOH solution. It was found that a volume of 19.60 mL of the standard NaOH solution is used to completely neutralize the acetic acid in the solution. Calculate the concentration of the acetic acid solution. 
Chemistry
How do I solve these problems You have 2000. g of aqueous NaOH solution. The percent by mass of the solute is 4.25%. How many grams of NaOH are in the solution? If you have 100.0 mL of a 25.0% aqueous solution of ethanol, what volumes of ethanol and water are in the solution? 
Chemistry
1)What is the pH of a 0.25 M solution of acetate (CH3COO) with a pKa of 4.76? 2)If the [OH] of a solution is 2.95 x 105M, what is the pH of the solution? 3)Determine the pH at the equivalence point when 25.00 mL of 0.1056 M CH3COOH is titrated with 0.1056 M NaOH. 4)Determine... 
denstiy
density is (g/cm^3) when if you have a volume of mL? If you want to find the mass from density and volume, do you have to convert the volume to liters? mL is the same as a cm^3 1 gram/ml= 1 gram/cm^3 
Chemistry
Thank you so much for the help on my other question!!! An alloy (solution of metals) is 80% by volume iron. The rest is aluminum. Aluminum has a density of 2.70 g/cm³, and iron's is 7.87 g/cm³. A block of alloy measures 2.0 ft. wide and 3.0 ft. long. If the block contains 25... 
Chemistry
Perpare 500ml of 1M HCl solution from a bottle of concentrated 37%(W/W) HCL stock with a density of 1.19g/ml. 37%= 37/100 x 100 therefore mass is 37g molarity = mol/vol 1= mol/0.5 mol=0.5 mass of Hcl needed = molxmr mass = 0.5 x 36.5 mass = 18.25g 
Chemistry
A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and found to have a mass of 258 mg. What mass of baium was in the original solution? (Assume that all of... 
math again
How does "How many gallons of a 12% indicator solution must be mixed with a 20% indicator solution to get 10 gal of a 14% solution?" turn into ".12x + .2(10+ 1x) = .14(10)"?? Please, I need to understand how it works! Thank you. 
chemistry
A solution is prepared by dissolving 0.20 mol of acetic acid and 0.20 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution. 
chemistry
A solution is prepared by dissolving 0.20 mol of acetic acid and 0.20 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution. 
chemistry
A solution is prepared by dissolving 0.20 mol of acetic acid and 0.20 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.