a density of 1.0 M solution of NaCL
29,738 results, page 87

College Chemistry  Science
At room temperature (25°C), 45 mL of a 0.002 M acid solution reacts with 30 mL of a NaOH (aq) solution (pH = 11.95), determine (through calculations) whether the acid is phosphoric acid (H3PO4), acetic acid (CH3COOH), or carbonic acid (H2CO3). 
chemistry
2 questions, I'm Having trouble figuring out how to calculate the moles of a solute in a solution based on the molarity and the volume. Here is what I'm working with. 1) "Use molarity of the stock solution of aspirin/Fe(No3)3(aq) (0.0044mol) and the total volume of the stock ... 
Chemistry
Accurately weigh 0.91.1 g into a 200 mL beaker. Dissolve the KIO3 in a small amount of distilled water. Quantitatively transfer, with rinsing, to a 500 mL volumetric flask. Dilute to the calibration mark and shake well. Rinse the buret several times with small portions of the... 
ap chemistry
What is the ratio of the molarities of PO3^4 and HPO4^2− ions in a buffer solution having a pH of 13.16? What mass of K3PO4 must be added to 1 L of 0.1 M K2HPO4(aq) to prepare a buffer solution with a pH of 13.16? Answer in units of g What mass of K2HPO4 must be added ... 
chemistry
Which of the following mixtures will be a buffer when dissolved in a liter of water? a. 0.1 mol Ca(OH)2 and 0.3 mol HI b. 0.3 mol NaCl and 0.3 mol HCl c. 0.4 mol NH3 and 0.4 mol HCl d. 0.2 mol HBr and 0.1 mol NaOH e. 0.2 mol H3PO4 and 0.1 mol NaOH i think e is answer but not ... 
Chemistry
Balanced equations..done? Is each reaction a redox reaction? For those reactions that are redox reactions, I must identify the substance being oxidized and the substance being reduced... (a) Zn(s) + CoCl2 (aq) > ZnCl2 (aq) + Co(s) (b) HI(aq) + NaOH(aq) > H2 O(l) + ... 
CheMistry
A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250mL volumetric flask and diluted to the mark with DI ... 
Chemistry
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq)> 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 746 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total ... 
Chemistry
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq)> 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 746 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total ... 
chemistry
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq)> 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 746 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a bottle with a total ... 
chemistry
The solubility of barium nitrate at 100°C is 34 g/100 g of H2O and at 0°C is 5.0 g/100g of H2O. If you start with 100 g of Ba(NO3)2 and make a saturated solution in water at 100°C, how much water is required? If the saturated solution is cooled to 0°C, how much Ba(NO3)2 is... 
chemistry
The solubility of barium nitrate at 100°C is 34 g/100 g of H2O and at 0°C is 5.0 g/100g of H2O. If you start with 100 g of Ba(NO3)2 and make a saturated solution in water at 100°C, how much water is required? If the saturated solution is cooled to 0°C, how much Ba(NO3)2 is... 
Chemistry
An anhydrous metal chloride, MCln, (1.500 g) is dissolved in water and the solution reacts with silver nitrate, requiring 47.34cm^3 of 0.5000M solution, to precipitate all the chloride as silver chloride. Identify M. 
chemistry
A solution contains an unknown amount of dissolved magnesium (Mg 2+). Addition of 5.50×10^−2 mol of Na2CO3 causes complete precipitation of all of the magnesium. what mass of the magnesium was dissolved in the solution? answer in unit g. 
chemistry
A 13.0 mL sample of an unknown HClO4 solution requires titration with 25.2 mL of 0.180 M to reach the equivalence point. What is the concentration of the unknown HClO4 solution? The neutralization reaction is as follows: HClO4 +NaOH ===>> H2O +NaClO4 
chemistry
what is the pH of a solution that is .15 M in HOCl and .25 M NaOCl after .05 mol HCl/L has been bubbled into the solution? this is what I did: HOCl + H2O > H3O+ + OCl .15 .25 .05 +.05  .1 .30 3.5E8=[H3O][.3]/[.1] H3O= 1.167E8 pH= log(1.... 
chemistry
How would I find amount of P in a 100 liter solution. The liter of solution contains nitric and sulfurous acid and possibly a dissolved body... the body weighs 70 kg and there are 6.3 ppt of phosphorous in a human body. 
Chemistry
Just two more to check, thanks! 1) The pH of a 1.25 M solution of unknown monoprotic acid is 5.43. Determine the value of Ka for this acid. HX <> H+ + X. (I obtain 1.0 x 10^11) 2) Calculate the pH of a solution which is 0.73 M benzoic acid. Ka = 6.5 x 105, HC7H5O2 &... 
Chem
Using the Absorbance (0.455) of your Unknown SCN solution and the slope (3163.9) from your Calibration Curve, calculate the concentration of SCN in the solution created from 5.0 mL 0.200 M Fe(NO3)3, 40.0 mL H2O and 5.0 mL SCN. How would I calculate? 
Calculus
What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case) 
Chemistry
1. You will need 600mL of a 0.5M NaOH solution. 3M NaOH is provided. Determine how much of the 3M NaOH you will need and write a procedure in your notebook for making the solution. 
chemistry
A 0.1 M solution of acetic acid is titrated with 0.05M solution of NaOH. What is the pH when 60% of the acid has been neutralized? The equilibrium constant (Ka) for acetic acid is 1.8x10^5 
chemistry
A buffer solution contains 0.200 M NH3 and 0.250 M NH4Cl. What is the pH of the buffer solution after the addition of 10.0 mL of 0.100 M NaOH to 50.0 mL of the buffer? Kb for NH3 is 1.8 x 105. 
chemistry
When 7.50 grams of iodine (I2) is added to 48.7 grams of carbon tetrachloride (CCl4), the iodine dissolves and a solution is formed. The weight percent of the iodine in the solution is a) 13.3 % b) 15.6 % c) 60.7 % d) 2.96 % e) 86.0% 
mathsI only need the solution
x+y+√z=148 x+√y+z=82 √x+y+z=98 find x,y,z given that x,y,z are all positive integers. Please i need the solution #thanks 
Algebra 1
Thank you in advance for your kind help! How much fresh water should be mixed to a 30% salt water solution, to obtain 90 gallons of a 23% salt water solution? 
Algebra 1
Thank you in advance for your kind help! How much fresh water should be mixed to a 30% salt water solution, to obtain 90 gallons of a 23% salt water solution? 
science
A liquid is usually _____ a gas. A denser than B less dense than C the same density as D lighter than 
Environment
Why is the density of oil a key factor with oceanic spills and fire? I can't find the answer in my book 
Science
Calculate the density if the mass of a solid material is measuered as 15.00 grams and its volume is measured as 5.0cmCUBED? 
8th grade Science
The density of salt(sodium chloride) is 2.16g/mL. What is the volume of 216g of this solid? 
Math
A random variable X has a cumulative distribution fnc given by 0 for a<0 G(a)={a^2 for 0<=a<1 1 for a>=1 find the probability density function. 
physics
estimate the rotational kinetic energy of earth, assuming it to be a solid sphere of uniform density 
chemistry
You need to find the number of moles in 5mL of a substance given the density and the molecular weight. How do you do this? 
Chemistry
An unknown gas has a density of 2.36g/L at 298K and 110 kPa. Calculate its molar mass. 
Chemistry
Determine the molar mass of a gas with a density of 1.3786 g/L at 80.00 degress celsius and exactly 1 atm. 
chemistry
65.0 mL of water is heated to its boiling point. How much heat in Kj is required to vaporize it? (Assume a density of 1.00 g/mL) 
Chem
Whats the specific gravity if i have a density of 2.7 g/ml and the inital water level was 20.0 mL. I got 2.7 is this right? 
 Physical Education
Calculate the density in SI units of a solid cube that measures 5 cm on each side and has a mass of 350 g. 
chemistry
a copper block has a mass off 80 grames and occupies a volume of 9.5cm3 calculate its density 
7th grade Science
will an object with a density of 0.79g/mL float, sink, or remain suspended in water 
Chem Honors
at what temperature will nitrogen gas have a density of 1.13 grams/meters at a pressure of 1.09 ATM 
physics
using well labelled diagrams,briefly describe how you would determine the density of an irregular object 
Physics
Make an analogy between heat capacity and density. Describe which quantities correspond to one another. Thanks! 
chemistry
If I have 10 silver coins and they weigh 55 grams and displace water from 25 mL to 35 mL, what is the density? What is the specific gravity? 
chemistry
If the density of an element is 6 g/ml, how much space (in milliliters) should a sample of it displace if it has a mass of 2.4 grams? 
Science
Calculate:what is the density of a metal block that has a mass of 750 grams and a volume of 55 cubic centimeters? 
science 7th grade
How is it possible that a can with a calculated density greater than 1.00g/ml could have floated (in water) 
geology
if a T. rex has a mass of 6.8 metric tons and a density of 0.8 g/cm^3 then calculate the volume of its body in cubic meters. 
calculus
Find Mx, My, and (x, y) for the laminas of uniform density Ï bounded by the graphs of the equations. (Use rho for Ï as necessary.) y =1/5 y = 0 x = 4 
Chemistry
What is the density of Li2S in grams per cubic centimeter, if the edge length of the unit cell is 5.88*10^2 pm? 
chemistry
Calculate the number of moles in each of the following: 0.150 g of salicylic acid 0.30 mL of acetic anhydride (density = 1.08 g/mL) 
Physics
Find the pressure exerted by a waterbed with dimensions of 2m x 2m which is 30 cm thick. (hint:use density of water) 
10th grade honors chemistry
1.3 pounds of a material with a density of 3.7 g/mL would occupy what volume in liters? 
Chem
What is the density of a block of marble that occupies 350 cm3 and has a mass of 708 g? Answer in units of g/cm 3 
Chemistry
Calculate the number of carbon atoms in 0.75 L of acetone (CH3COCH3). (density=1.3g/mL and boiling point=48.5 degrees) 
Chemistry
the density of H2 gas in a rigid container is 0.117 g/L at 55 C. what is the pressure of hydrogen in the flask if it is heated to 125 C? 
science
Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation 
Chem.
What is the mass (in kilograms) of a cube of silver that measures 0.68m on each side, when the density of the sample is 10.5g/cm3 
chemistry calculation
I need to know what volume of liquid phosphoric acid at 85%, H3PO4 with density of 1.685 will replace 5 gr 
Chemistry
If I have 10 silver coins and they weigh 55 grams and displace water from 25 mL to 26 mL, what is the density? What is the specific gravity? 
Quantum Physics
What is the probability current density of a particle with wavefunction ψ(x,t)=exp(iℏ(px−Et))? 
science
What is the density of Radon (Rn) gas at STP (standard temperature and pressure)? How do I solve/set up this problem? Thank you! 
math
a piece of silver density 10.5g displaces 4.5ml {cubed} of water in a test tube what is its mass? 
Chem
When conducting an experiment on determining density, what would the variable be? not the mass or temperature...can't figure it out. Thanks MC 
Astronomy
True or False? The first galaxies formed in the regions where dark matter density was highest. 
chemistry
a block of metal has a volume of 13.4in^3 and a weight of 5.14 lb. what is its density in grams per cm^3? Show operation 
math
Find the pressure exerted by a waterbed with dimensions of 2 m x 2 m which is 30 cm thick. (hint: use density of water) 
Physics
Find the pressure exerted by a waterbed with dimensions of 2 m x 2 m which is 30 cm thick. (hint: use density of water) 
physics
Find the radius of a spherical asteroid that has a density of 4600 kg/m3 and an acceleration due to gravity of 0.11 m/s2 at the surface. km 
Chemistry
Bromine is a reddishbrown liquid. Calculate its density (g/mL) if 586g of the substance occupies 188 mL. 
physics
A solid of relative density 1.25 is found to weigh 12g in water find its weight in air 
chemistry
What is the density of propane gas, C3H8, when measured at 18 grade celcius and 744 torr pressure? 
chemistry
Calculate the density of C2H2 gas (FM = 26.04 g/mol), in g/L, at a pressure of 2.082 atm and at a temperature of 62.5oC. 
Chemistry
A star is estimated to have a mass of 4.4x1026lbs. It has a diameter of 8.69x105 mi. Calculate the density in g/cm3. 
chemistry
What is the mass of a liquid that has q volume of 2.5L and a density of 3g/cm cubbed? I got 7.5, but I am unsure if I should have converted L to mL 
PHYSICS
compute for the density of a brake fluid used in a car which has a volume of 600cm^3 and a mass of 100 g? 
Chemistry
How do you prepare one liter of phosphate buffer 0.01 M at pH 12.0 from 85% phosphoric acid (density 1.69g/ml) and NaOH 1.0 M 
math
area of 540,000 square miles holds population of 64.1 million calculate the density 
Science
Using A Well Labelled Diagrams,briefly Describe How You Would Determine The Density Of An Irregular Objects 
geography
true or false Air density increases when temperature remains constant and pressure rises 
pharmaceutical physical chemistry
find the density of NH3 gas at 100celsius when confined by a pressure of 1600mmHg 
chemistry
Predict the heat output of the combustion of 1L of octane at 298K. It's mass density is.703 g/cm3 
Chemistry
If a 29.9 g sample of the liquid cyclohexane has a volume of 38.6 mL, what is the specific gravity of the compound? Take the density of water to be 1.00 g/mL. 
Chemistry
The density of an unknown gas is 1.23 g/L in 330K and temperature 25.5 pressure kPa. What is the molar mass of the substance? 
science
the density of water approximately 1.00 g/mL. Would the piece of wood in the previous question (#1) float or sink 
Chemistry
This same substance is a gas with a density of 1.25 g/L at 127o C and a pressure of 400 torr. What is its molar mass ? 
physic
An object of mass m, volume v, is totally immersed in a liquid of density e, the tension of a strings holding it is? 
Physics
A solid weigh 45N and 15N respectively in air and water. Calculate the relative density 
Physics
Assuming the earth to be a uniform sphere of radius 6400 km and density 5.5g/c.c. find the value of g on the surface where G=6.67×10 
Chemistry
which of the following compounds dissolve in water?? Sodium Nitrate (NaNO3)  Sucrose (C12H22O11)  Sodium Chloride (NaCl)  Potassium Sulfate (K2SO4)  Ethanol (C2H5OH)  Sodium Bicarbonate (Baking Soda)(NaHCO3)  Calcium Sulfate (CaSO4) i did an experiment, but I was not ... 
physics
1 a pipe of diamter 1cm carreiers water flowing at 1m/s. the end of the pipe is bplugged and there is a small holeon the top as shown which is 1mm diameter. How high does the water go? *=hole ()____________*___() 2. you're indoors, with a door 1m wide and 2.5m high. the wind ... 
Chemistry
A mixture contains only NaCl and Fe(NO3). A 0.456g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is filtered, dried and weighed. Its mass is 0.107g. Calculate the following: a. the mass of the ... 
Chemistry
When 22.3 mL of 1.00 M AgNO3 is mixed with 21.7 mL of 1.50 M NaCl, the temperature of the mixture rises for 21.6 degrees C to 29.7 degrees C. The mass of the aqueous mixture is 45.9 grams and its specific heat capacity is 3.94 J/grams degrees C. I calculated (45.9g)x (3.94J/g ... 
Chem Problem
I originally asked you the first question and I got the answer 7.7 but theres other parts to the problem but Im not sure what to do In the preparation of a mustard solution, an individual package of mustard was emptied into a beaker and the mass was determined to be 3.809 ... 
Chem Problem
I originally asked you the first question and I got the answer 7.7 but theres other parts to the problem but Im not sure what to do In the preparation of a mustard solution, an individual package of mustard was emptied into a beaker and the mass was determined to be 3.809 ... 
Math
How many centiliters of pure acid must be added to 6 centiliters of a 50% acid solution to obtain a 70% solution? 
Science
calculate the mass of sodium nitrate in grams in a 150 ml solution of a 5.00 M solution of sodium nitrate 
Chemistry
how would I make 5.5 liters of a 2.5 molar HCl solution from a 10.5 molar HCl stock solution? 
Algebra
Can you tell me if these are correct? I am not sure that I understand this. 1. Which is the solution for the determinant? 10 0) 5 7 Answer 70? 2.Which is the solution for the determinant? 1 7) 0 3 Answer 3