a density of 1.0 M solution of NaCL
29,659 results, page 75

chemistry
Please help ~~ Because i don't ever know the reaction in organic compound .. Do anyone has the data bank of the organic chemicals ? I cannot find out what are the compound in the reaction with it ~~ 1. What do butylamine give when it is dissolved in water ? A nearly pH10 ... 
Chemistry HELP!
A student placed 10.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the solution was ... 
chem
A student placed 12.5 of glucose (C6H12O6) in a 100ml volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the calibration mark on the neck of the flask was reached. The flask was then shaken until the solution ... 
ChemistryPlease help
A student placed 11.0 of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.ml mark on the neck of the flask was reached. The flask was then shaken until the solution was uniform... 
chemistry
NaCl + CuSO4 to write the product would i just do double replacement to get Na2SO4 + CuCl2 so the whole thing would be 2NaCl + CuSO4 > Na2SO4 + CuCl2 
Chemistry
"A voltaic cell is constructed by immersing a strip of sillver metal in a 1.0 MAgNO3 solution and a strip of cadmium metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. a. Write the balanced overall cell reaction. b. what ... 
Math
1)Solve 3+2(1x)>6 or 2x+14<=8. Graph the solution set on a number line. The number line I'm working with is: 4 3 2 1 0 1 First solution: 3+22x>6 52x>6 2x>1 x> 1/2 for the graph, I have an open circle between 0 and 1 and the arrow going right. Second ... 
Chemistry
A solution containing a mixture of metal cations was treated with dilute HCl and no precipitate formed. Next, H2S was bubbled through the acidic solution. A precipitate formed and was filtered off. Then, the pH was raised to about 8 and H2S was again bubbled through the ... 
Chemistry
26.0246 g of sodium carbonate is dissolved in water and the solution volume adjusted to 250.0 ml in a volumetric flask. A 25.00 ml sample of an unknown hydrochloric acid solution required 32.06 ml of the sodium carbonate solution for complete reaction. What was the molarity of... 
math
1. give an example of an absolute value inequality whose solution set is the empty set 2. explain why \x+2\ is greater than or = to 4 has all real numbers as its solution set. 
Chemistry
a 15.00mL sample of NaOH was titrated to the stoichiometric point with 17.40mL of 0.2340M HCl. a) what is the molar concentration of the NaOH solution? b)calculate the grams of NaOH in the solution. 
Chemistry
A certain classification test calls for 5 mL of 1.2 M NaOH. The only concentration of NaOH solution available is 3.0 M. Describe how you would make the quantity that you need of the 1.2 M NaOH solution. 
Math help please
A lab assistant wants to make five liters acid solution. If solutions of 40% and 18% are in stock, how many liters of each must be mixedto prepare the solution Amount in liters: 40%: 18%: 
chemistry
If 26.223 mL of potassium permanganate solution is required to titrate 1.041 g of ferrous ammonium sulfate hexahydrate, { FeSO4(NH4)2So46H2O }, calculate the molarity of the KMno4 solution. and the equation the lab gave me was Mn04() + 8H(+) + 5Fe(+2) > Mn(2+) + 4H2O... 
Pre Cal
Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t, whenever possible. (If there is no solution, enter NO SOLUTION.) 9pi/4 Looking for sin, cos, tan,cot, csc, and sec 
pre calculus
solve the equation. give an exact solution, and also an approximate solution to four decimal places. 2^(9x7)=7 My first step was to change it to log(base 2) 7 = 9x7 i got 1.0897 Did i do something wrong or did i miss one question? 
Chemistry
How many millilitres of a 0.1 M solution of NaF and of 0.1 M solution of HF must be mixed to obtain 1L of buffer at pH = 4? Ka = 6.7 × 104 Currently I am quite confident with using the henderson and Hasselbalch equation but this question has left me stumped... Any help with ... 
Chemistry
What is the maximum mass of cobalt (II) phosphate that will precipitate from a solution prepared by adding an excess of K3PO4 solution to 100.0 mL of 5.0 M CoCI2? Sorry for all the confusion with different names we are working in a group and its easier to keep track who's work... 
chemistry
How can DRY calcium carbonate be prepared from sodium carbonate? Na2Co3 + CaCl2  NaCL + CaCo3. but how to get dry calcium carbonate 
Science (atoms) 8th grade
Speeds up or slows down? By stirring a gas in a liquid, its solubility ____________ the dissolving process. High or low? A gas's solubility is is faster in a liqud when under __________. How do the methods of speeding the rate of solution for dissolving a solid in a liquid ... 
calculus
Sorry to post this again, but I am still unable to understand it and need help. Please help.1) Using 3(x3)(x^26x+23)^2 as the answer to differentiating f(x)=(x^26x+23)^3/2, which I have been able to do, I need to find the general solution of the differential equation dy/dx... 
CHEM
Mass percent is one way to represent solution concentrations, though not the only one. A common measure of solution concentration is Molarity; moles of solute per liter of solution. Calculate the molarity of vinegar in each sample that you titrated and then determine the ... 
Chemistry
For the equation give the formula equation, ionic equation, and the net ionic equation after predicting the products and balancing. Using the solubility rules to indicate solid or aqueous each formula. AgNO3 + NaCl 
Chemistry Help
1.) Calculate the number of atoms in 2.58 mol antimony. 2.) Determine the mass of 1.45 mol FePO4. 3.) Calculate the number of mol in 6.75 g of NaCl. 4.) What is the volume, in liters, of 2.54 mol methane (CH4) gas?. 5.) What is the percent composition of B4H10? 
Chemistry
.01 mols of a weak acid is dissolved in .1 L of water. That solution is then reacted with .01 mols of NaOH. Would the resulting solution be acidic, basic, or neutral? Why? What reaction equations support the explanation? I think the answer is that the resulting solution would ... 
chemistry
1. When performing this experiment, a student mistakenly used impure KHP to standardize the NaOH solution. If the impurity is neither acidic nor basic, will the percent by mass of acetic acid in the vinegar solution determined by the student be too high or too low? Justify ... 
chem
If 50.0 mL of a 0.10M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium chloride, what is the molar concentration of chloride in the resulting solution? 
math
Mary has a solution that is 60% alcohol and another that is 20% alcohol. How much of each should she use to make 100 milliliters of a solution that is 52% alcohol? 
Math  Alg
How much pure acid must be added to a 30% acid solution to make a 60L solution which is 50% acid? 
Math  Alg
How much pure acid must be added to a 30% acid solution to make a 60L solution which is 50% acid? 
chemistry
What would be the final concentration of [K+] if we mix 0.234 L of a solution with a concentration of 1.2M K2CO3 with 312.5 mL of a solution with a concentration of 0.32 M K3PO4 
MATH
for what value(s) of k does the equation kx  10  5x^2 have: a) one real solution b) two distinct real solutions c) no real solution 
Math
How many real number solutions does the equation have? 0 =  4x^2 + 7x 8 a. no solution***** b. one solution c. two solutions d. infinitely many solutions 
chem
The solubility of KNO3 is 155 g per 100 g of water at 75 degrees celcius and 38.0 g at 25 degrees celcius. What mass (in grams) of KNO3 will crystallize out of solution if exactly 100 g of its saturated solution at 75 degrees celcius is cooled to 25 degrees celcius. i found ... 
chemistry
what is observeed when carbon dioxide was bubbled into bromothymol blue? a. the color of the solution changed from greenish to yellow color. b. the solution turned cloudy c. the color of the solution changed from yellow to colorless d. a precipitate formed again I say the ... 
Please Help Fast
A student placed 10.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the solution was ... 
chem
A solution contains 32 g of KNO3 per 100g of water at 25 degree C. Is the solution unsaturated, saturated, or supersaturated? I think its saturated Look at your saturation chart. I will be happy to critique your thinking. is there one online? 
Alg II
When you are solving a matix equation and the determinant of your coefficient matrix is zero, how can you determine when it is a no solution versus an infinitely many solution? nvm i figured it out. you have to determine whether the system is consist or inconsistent. 
algebra 1
Got a test tomorrow... Say you have a system of equations (linear), that you can solve using substitution, graphing, or elimination. Without solving the equations, can you tell if there is one solution, many solutions, or no solution? 
Chemistry
A solution was prepared by adding 15mL of 0.129 M KI, 5mL of 0.1 M Na2S2O3, 1mL of starch solution, and 15mL of 0.125 M (NH4)2S2O8. Calculate the concentration of (M) of I in the final mixture before the chemical reaction. 
math
Can someone check over these problems for me? 1. The width of a rectangle is fixed at 28 cm. What lengths will make the perimeter greater than 70 cm? A: the length must be greater than 7 cm. 2. 7x=63 A: x=9 3. Is (8.9)a solution of 2x+4y=12 A: No 4. 1/2x=9/10 A: 9/5 5. ... 
Algebra Help
I have a question regarding this problem below? I noticed it in an eariler post, and have come to figure that my text book has it like this? What would be the solution for this? x+sqrt(11x)= 5 x = 2? OR 2,7? OR NO solution? I say x = 2 only? Any Thoughts? 
Chemistry
I am really stuck on these 2 questions: 1. Why was 2M HNO3 added before adding 0.05M AgN03? 2.Write a full equation b.) an ionic equation between silver nitrate solution and sodium chloride solution. 
chemistry
what volume in Liters of 0.15M KCl solution is required to completely react with 0.150 liter of a 0.175M Pb(NO3)2 solution according to the following balanced equation? 2KCl(aq)+ Pb(NO3)2(aq)PbCl2(s)+ 2KNO3(aq) 
Maths
Hi Please can you help? Really sorry for repeating the question but I wrote it incorrect before. Find the particular solution of the differential equation from dy/dx=2/27(x3)ã(x^26x+23) / (y) (y>0. for which y = 2 when x = 1, and then give this particular solution in ... 
Chemistry
How many grams of glycerin C3H8O3 must be dissolved in 375.9g of water at 100 degrees Celsius to reduce the pressure of water above the solution to 714.6mmHg. The solution is a nonvolatile compound 
chemistry
A stock solution containing Mn2+ ions was prepared by dissolving 1.168 g pure manganese metal in nitric acid and diluting to a final volume of 1.000 L. Calculate the concentration of the stock solution. 
chem
A 0.050 L solution of H2SO4 requires 200.0 mL of 4.0 M NaOH for phenophthalein to turns pink to colorless. What is the molarity of the original H2SO4 solution? I got 4M but my instructor said it's 8M how did he get that? Pls need help figuring it out. Thanks 
Chemistry
The antifreeze in a car is a 50% by weight solution of ethylene glycol, C2H6O2 in a water solvent. Calculate the boiling point and freezing point of this solution. (For H2O, Kb=0.52 C/m Kf= 1.86 C/m I can't even find the formula for this in my book, please help :( 
chemistry
Calculate the pH of .100 of a buffer solution that is .25 M in HF and .50 M in NaF. What is the change in pH on addition of the following? A. .002 mol of HNO3 B. >004 mol of KOH I calculated the correct pH of the solution but am having trouble calculating A & B. Thanks, Ivy 
chemistry
A) solve for the number of grams of Ca2+ ion in a solution prepared by adding 1 gram of calcium oxalate powder to 100 mL at pH 9. (B) explain what happens to the dissolved Ca2+ calculated before if you reduce the pH of this solution to 2. 
chemistry
Calculate the following quantity: Volume in mL of 21.4 M cobalt(II) chloride solution that must be diluted with water to prepare 17 mL of an 51.5 M solution. Calculate to 0 decimal places and do not include units. Also, do NOT use scientific notation. 
Trigonometry
Solve the equation, where 0° ≤ x < 360°. Round approximate solutions to the nearest tenth of a degree. (Enter your answers as a commaseparated list. If there is no solution, enter NO SOLUTION.) 3 sin x − 3 cos x = 1 
College Algebra
4 + 5^6x = 8 (a) Find the exact solution of the exponential equation in terms of logarithms. x = (b) Use a calculator to find an approximation to the solution rounded to six decimal places. x = can any body help me out here please? 
Chemistry
When 10.00 mL of 1.00 M HCl solution is mixed with 115 mL of 0.100 M NaOH solution in a constantpressure calorimeter, the temperature rises from 22.45 °C to 23.25 °C. Calculate q for this reaction, assuming that the heat capacity of the calorimeter is the same as that of ... 
Chemistry
Calculate the pH of a buffered solution prepared from 0.25 mol KF and 0.75 HF after the addition of 0.05 mol of NaOH (assume a 1.0 L volume of solution) I get that i need to use two separate ice tables, but i don't really understand how to go about doing that? 
chemistry
A chemist must dilute 55.5mL of 2.80 M aqueous nickel(II) chloride NiCl2 solution until the concentration falls to 2.00 M . He'll do this by adding distilled water to the solution until it reaches a certain final volume. 
Chemistry
NaHCO3 + HCl = NaCl + H2O + CO2 The HCl in the reaction is 2 molar what i need it to figure out how much CO2 if produced when 10g of each substance is mixed. And the limmiting reagent and any information that can be produced around the ammount of CO2 prouced. 
chemistry
Hi can you help me with the following question. I don't understand how to answer the question. If someone could tell me the answer for part a of the following sample problem, i would most gladly appreciate it. ... 
Chemistry
Can someone help me find the grams of what I produced. This is my first experiment I've ever done before and it was fun. Na2CO3 + 2HCl = 2NaCl + H2O + CO2 Empty crucible is: 33.076g I Started with 0.575 Na2CO3 How do I set this up to find how much NaCl that I produced with a ... 
Chemistry
ΔT = T(mix)  T(initial) And the equations is: HCl(aq)+ NaOH(aq) => NaCl(aq) + H2O(l) And T(mix) = 37 C 50.0 mL of 2.0M HCl = 23.7 C 50.0 mL of 2.0M NaOH = 23.5 C How do I find T(initial), do I just use their averages? Thanks 
chemistry
How do I balance this equation for silver nitrate and sodium chloride reacting to form sodium nitrate and silver chloride. AgNO3 + NaCl = AgCl2 + NaNO3 
Chemistry
For the reaction ? FeCl2 + ? Na3PO4 → ? Fe3(PO4)2 + ? NaCl what is the maximum mass of Fe3(PO4)2 that could be formed from 5.25 g of FeCl2 and 1.62 g of Na3PO4? Answer in units of g 
chemistry
How many grams of NaCl must be added to 225.0 g of H2O at 45 °C to lower the vapor pressure of water by 2.21 mmHg? The vapor pressure of pure water is 71.93 mmHg at 45 °C. 
Chemistry
Convert the information described below into balanced equation: (a) When a mixture of copper(II) oxide and carbon is heated, elemental copper forms and carbon monoxide evolves into the atmosphere. (b) When a concentrated solution of sodium hydroxide is added to an aqueous ... 
Chemistry
A Stock solution has a total volume of 1.5l. It is diluted by removing 10 ml of the stock and adding 90 ml of water. the diluted solution has a concentration of the solute of 40mg/l a, what is the concentration of the solute in the stock solution? b, How much solute is present... 
PHYSICS
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 ... 
chemistry
Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4. hydrogen gas is bubbled... 
chemistry
Find the pH of a 0.010M solution of NH4ClO4 and the pH of a 0.010M solution of NH4C2H3O2. 
chemistry
If the KmnO4 of the last problem is in 30.30mL of solution what is the molarity (M) of the KMnO4 solution? 
math
Which of the following equations has the given solution set? Solution set: Ø A)2m + 5 = 2m + 5 B)2m + 5 = 2m + 5 C)2m + 5 = 2m  5 
math
Which of the following equations has the given solution set? Solution set: Ø A)2m + 5 = 2m + 5 B)2m + 5 = 2m + 5 C)2m + 5 = 2m  5 
CHEMISTRY molarity
what is the molarity of the solute in the following solution: a 12.5% w/v Co(NO3)2 solution? 
chemistry
How do you make a 3 m solution of kbr? How many moles of kbr are in 1 liter of a .03 m solution? 
Chemistry
What volume of a 3M KOH solution can be prepared by diluting 0.5L of a 5M KOH solution? 
Chem
What volume (L) of a 3M KOH solution can be prepared by diluting 0.5 L of a 5M KOH solution? 
chemistry
Make up a 500mL solution of 4.8M solution HCl (HCl gmw= 36.5g) 
Chemistry
How many mL of 6.00 ppm solution are needed to make 4.00 L of a 0.100 ppm solution? 
jchs
a sugar solution contains 26 g of sugar in 0.50 l of solution.waht is the concentration in g/l. 
chemistry
a 2.3% (m/v) LiCI solution p;repared from 53.0 ml of a 10.0%(m/v)LiCI solution. what is volume in milliliters 
algebra 1
Which of the following equations has the given solution set? Solution set: Ø 
chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution? 
chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution? 
chemistry
What is the molarity of a solution containing 18.0g of KCl in 262mL of KCl solution? 
Chemistry
What is the molarity of a NaOH solution if 21.3 mL of the NaOH solution is neutralized by 10.4 mL of 6.10 M H3PO4? 
Chemistry
If 4.7M SrLi2 solution is diluted to 45L, what is the molarity of the diluted solution? 
chemistry
a metal X that reacts with metal Y in a solution of Y but does not react with Z in a solution of Z means that ........ 
Algebra
Is (0,3) a solution to the equation y=x+3? yes no Is (1,4) a solution to the equation y=2x? yes no I need help finding the answer. I don't know how to. 
Chemistry
How can dilute a 1 M HCl solution to obtain 100 mL of HCl solution 0,1 M? 
Chemistry. can jus anyone giv me ther opinion.
Eva has two containers labeled A and B. The diameter of container A is 8 inches and the diameter of container B is 12 inches. If Eva pours the water from container A into container B, which will occur... 
Chemistry
Select the statements that correctly describe buffers.? 1) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 2) The Ka of a buffer does not change when any amount of an acid is added to the buffer solution. 3) The pH of a ... 
math
1. give an example of an absolute value inequality whose solution set is the empty set 2. explain why \x+2\ is greater than or = to 4 has all real numbers as its solution set. please help 
Chemistry
when 7.50 grams of iodine (I2) is added to 48.7grams of carbon tetrachloride (CCl4), the iodine dissolves and a solution is formed. The weight percent of the iodine in the solution is? 7.50g I2/ 7.50 + 48.7 X 100 = 13.3 Did I do this correctly? 
chemistry
A solution of HClO is mixed and found to have a pH of 4.53. Find what the initial concentration of HClO was for this solution. Ka = 3.00 × 10−8 for HClO. Answer in units of mol/L please help this is due in 1 hour 
chemistry
A piece of Al weighing 2.7g is titrated with 75 mL of H2SO4 (sp.gr. 1.18 g/mL and 24.7% H2SO4 by mass). After the metal is completely dissolved the solution is dilute to 400mL. Calculate molarity of free H2SO4 in solution. 
AP Chemistry
The normal boiling point of methanol is 64.7°C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 642.3 torr at 64.7°C. What is the mole fraction of methanol in this solution? 
Chemistry
If 42 mL of Cr2O72(aq) solution is titrated to the endpoint with 172 mL of 0.15 M Cl, what was the concentation of Cr2O72 solution? I got the reaction 14 H+(aq) _ Cr2O72(aq) + 6 Cl = 2 Cr+3(aq) + 3 Cl2(g) + 7 H20(l) Now I have drawn a blank. Please help! 
Grammar
Circle the nouns that can be used with the verbs on the right . Engineconsumptiondependence (reduce) Answer : consumption and dependence Solutiondependencealternative (find) Answer:solution and dependence Resourcestechnologystocks(deplete) Answer:Resources and technology... 
chemistry
Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C . Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons) with a molecular ... 
chemistry
Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons) with a molecular weight...