Saturday
August 23, 2014

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

Post a New Question | Current Questions

chemistry
A 0.25 kg length of aluminum wire is warmed 10.0°C by an electric current. How much heat was generated by the current?
Monday, February 3, 2014 at 3:16pm

Chemistry
Henry constant for the dissolving of nitrogen in water was reported as 7e-4 mol/Latm at 20 deg Celsius. What is the value of the equilibrium constant, K, at 20 deg Celsius for the process N2(g0)=N2(aq). If the amount of nitrogen in aqueous solution is .1 mol N2 and the partial...
Monday, February 3, 2014 at 2:49pm

chemistry
2part question a camper obtained a sample of water from a mountain stream for cooking, but the water appeared to be cloudy with slit. what would be the best method of separating the silt from the water? Draw a flow chart for the separation you have described, using: mixture 10...
Monday, February 3, 2014 at 9:02am

chemistry
a student tried to separate a mixture of sand and red-colored water using a suction filtration apparatus. From a mixture of 10.0g of sand and 90.0g of water, the student recovered 9.5g of sand. what was the percent recovery of sand from the mixture? the sand, originally white...
Monday, February 3, 2014 at 8:57am

CHEMISTRY
HELP MY REPORT IS ABOUT SATURATED ND UNSATURATED SOLUTIONS
Monday, February 3, 2014 at 4:52am

Chemistry
What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees C?
Monday, February 3, 2014 at 12:29am

Chemistry II
What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees C?
Monday, February 3, 2014 at 12:06am

chemistry
Rhodium metal currently costs $1251. per troy ounce (note this is different than a regular ounce! 1 troy ounce = 31.1035g). What would the cost be in dollars to purchase enough gold to form a solid square based pyramid with base dimensions 0.750m by 0.750m and height of 0.500m?
Sunday, February 2, 2014 at 11:24pm

chemistry
A sample of aluminum metal containing 9.1080 x 10 to the 25 power atoms is drawn into a cylindrical wire with radius r=0.833 mm. how long must the wire be in meters?
Sunday, February 2, 2014 at 11:01pm

chemistry
the suction filtration flask has been taped with strong black tape. Why was this safety precaution a good idea?
Sunday, February 2, 2014 at 10:01pm

chemistry
A camper obtained a sample of water from a mountain stream for cooking, but the water appeared to be cloudy with silt. What would be the best method of separating the silt from the water?
Sunday, February 2, 2014 at 9:59pm

chemistry
the sand originally white, was a light pink after drying. How could the student improve the color of sand further?
Sunday, February 2, 2014 at 9:57pm

Chemistry
a student used a piece of copper with a mass of 2.85g and obtained 2.95g of copper at the end of the experiment, an apparent recovery of 104$. How could the student account for this result, since the best to expect is 100%.
Sunday, February 2, 2014 at 9:56pm

chemistry
I have to prepare a 0.2% water solution of n-propanol and a water solution of methanol and isopropanol at 0.2% that can be in the same container. It didn't specify but I'm pretty sure the solutions are v/v%. For the n-propanol a 0.2% solution should just be 2mg/mL of ...
Sunday, February 2, 2014 at 9:28pm

Chemistry
Draw the Lewis Structures of the following compounds: CH3CH3CH3COH, H2NCOCH3, HCCCH2OH.
Sunday, February 2, 2014 at 9:26pm

Chemistry Lab
So I did a kinetics lab on the rate of reaction of peroxydisulfate ion with iodide ion. Part 1 was the effect of concentration. One of the questions asked is to calculate the amount of thiosulfate consumed in moles. My results for trial 1 were (Times taken for consumption of 1...
Sunday, February 2, 2014 at 9:25pm

Analytical chemistry
How many grams of solid CuSO4. 5H2O are needed to prepare a 500 ml of a 1000 ppm solution of Cu?
Sunday, February 2, 2014 at 8:18pm

Chemistry
About 50% of U.S. and most Canadian sulfur is produced by the Claus process, in which sulfur is obtained from the H2S(g) that occurs in natural gas deposits or is produced when sulfur is removed from petroleum. The reactions are described by the equations 1)2H2S(g)+3O2(g)=2OS2...
Sunday, February 2, 2014 at 7:45pm

Chemistry
If you total sample mass was 1.50 g, and you determined that 0.95 g were KHCO3, what was the percent mass off the KHCO3 in the sample?
Sunday, February 2, 2014 at 7:40pm

Science (Chemistry)
A student mixes 35.0 mL of 2.82 M Pb(NO3)2(aq) with 20.0 mL of 0.00221 M Na2C2O4(aq). How many moles of PbC2O4(s) precipitate from the resulting solution? What are the values of [Pb2 ], [C2O42–], [NO3–], and [Na ] after the solution has reached equilibrium at 25 °...
Sunday, February 2, 2014 at 7:16pm

Science (Chemistry)
A student mixes 35.0 mL of 2.82 M Pb(NO3)2(aq) with 20.0 mL of 0.00221 M Na2C2O4(aq). How many moles of PbC2O4(s) precipitate from the resulting solution? What are the values of [Pb2 ], [C2O42–], [NO3–], and [Na ] after the solution has reached equilibrium at 25 °...
Sunday, February 2, 2014 at 7:16pm

Chemistry
In a similar experiment, a student needs a 0.50 M KOH solution (MM = 56.11 g/mol). The student only has a 50.00 mL volumetric flask. How much KOH should be added before the flask is filled with water?
Sunday, February 2, 2014 at 7:13pm

Chemistry
20.00 ml of 20.00 M acetic acid is reacted with .1000M NaOh calculate the number of millimoles of acetic acid reacted
Sunday, February 2, 2014 at 6:08pm

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure. 2N2 + 5 O2 = 2N2O5 I balanced correctly. What is my next step to solve this problem. I am confused and I want to understand ...
Sunday, February 2, 2014 at 5:06pm

Ap Chemistry
a mixture contains only sodium chloride and potassium chloride. a .1586-g sample of the mixture was dissolved in water. it took 22.90 mL of 0.1000 M AgNO3 to completely precipitate all the chloride present. what is the composition(by Mass percent) of the mixture?
Sunday, February 2, 2014 at 4:59pm

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure. I balanced the equation 2N2+2O2 = 2N2O5 BUT I AM NOT GETTING THE CORRECT ANSWER, WHAT AM I DOING WRONG?
Sunday, February 2, 2014 at 4:35pm

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure. I balanced the equation 2N2+2O2 = 2N2O5 BUT I AM NOT GETTING THE CORRECT ANSWER, WHAT AM I DOING WRONG?
Sunday, February 2, 2014 at 4:35pm

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure
Sunday, February 2, 2014 at 3:47pm

Chemistry
SO2(g) + O2(g) → SO3(g) What volume of sulfur dioxide gas reacts with 15.0 L of O2? The reaction conditions are 875°C and 1.00 atm pressure
Sunday, February 2, 2014 at 3:46pm

Chemistry
25 ml of cloudy ammonia solution is added to a 250 ml Erlenmeyer flask. 50 ml of .1 M HCl is then immediately added to the flask, which reacted with the ammonia in the solution. Next, the solution was titrated with .025 M NaOH to neutralize the excess HCl that was not ...
Sunday, February 2, 2014 at 1:49pm

chemistry
How many grams of Na2CO3 are present in 18.4 mL of a 34.0% Na2CO3 solution. The density of the solution is 1.10 g/mL.
Sunday, February 2, 2014 at 1:05pm

chemistry
3H2+N2=2NH3 if 2.70 g of H2 reacts with jugful of N ,how many grams of NH3 is formed?
Sunday, February 2, 2014 at 12:08pm

Chemistry
What mass in grams of a 0.500 m(molal) solution of sodium acetate, CH3CO2Na, in water would you use to obtain 0.200mol of sodium acetate?
Sunday, February 2, 2014 at 3:59am

Chemistry
At 1 atm, how much energy is required to heat 35.0 g of H2O(s) at –12.0 °C to H2O(g) at 127.0 °C?
Sunday, February 2, 2014 at 3:08am

CHemistry
At 1 atm, how much energy is required to heat 35.0 g of H2O(s) at –12.0 °C to H2O(g) at 127.0 °C?
Sunday, February 2, 2014 at 3:07am

chemistry
The laboratory tech accidentally mixed NaHCO3 with BaCl2-2H2O instead of KCl when preparing unknown mixture for this experiment. How would this mistake affect the calculated percentage of NaHCO3 in the mixture? Justify answer with an explanation. Is it still possible to ...
Sunday, February 2, 2014 at 1:08am

chemistry
A student dried a wet crucible with a Kimwipe. A piece of Kimwipe was left clinging to the inside wall of the crucible, The student did not see the piece of Kimwipe when adding the NaHCO3-KCl mixture to the crucible. The crucible ans its contents were weighed and subjected to ...
Sunday, February 2, 2014 at 1:05am

Chemistry
A student cleaned a crucible with HCl. After pouring the HCl into the waste container, the crucible was neither rinsed with water or dried before the student added the NaHCO3 and KCl mixture. The crucible contained some residual HCl. How would this experimental error affect ...
Sunday, February 2, 2014 at 12:29am

chemistry
so we did a chem lab and one of the questions is to tabulate the amount of S2O3 consumed in moles and times (sec) for each run. I'm just not sure how to calculate the amount consumed. Can someone please explain how?
Saturday, February 1, 2014 at 10:40pm

CHEMISTRY
The grams of protein in 1 cup of soup that has 110 Cal{\rm Cal} with 7 g{\rm g} of fat and 9 g{\rm g} of carbohydrate. Express your answer using one significant figure.
Saturday, February 1, 2014 at 8:53pm

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
Saturday, February 1, 2014 at 7:11pm

Chemistry
What volume of oxygen at 25 degrees celsius and 93.5 kPa will use up 57.1 g of butane?
Saturday, February 1, 2014 at 6:15pm

chemistry
Just need help solving this one, please: The grams of fat in one avocado if it has 405 Calories, 13 g of carbohydrate, and 5 g of protein Express your answer using one significant figure. Thanks -MC
Saturday, February 1, 2014 at 4:47pm

chemistry
I need help solving this: The grams of protein in 1 cup of soup that has 110 Cal with 7 g of fat and 9 g of carbohydrate. Express your answer using one significant figure. Thanks -MC
Saturday, February 1, 2014 at 4:29pm

Chemistry
What is the maximum height achieved if a 0.800 kg mass is thrown straight upward with an initial speed of 40.0 m·s–1? Ignore the effect of air resistance.
Saturday, February 1, 2014 at 3:50pm

Chemistry
The FDA recommends that women who are pregnant avoid eating more than three 6.00-oz servings of bluefish per month because of the relatively high mercury levels in that type of fish. If bluefish contains 0.341 ppm of mercury (that is, 0.341 oz of mercury per 1×106 oz of ...
Saturday, February 1, 2014 at 3:37pm

Chemistry
An office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater (assume continuous operation)?
Saturday, February 1, 2014 at 2:59pm

College Chemistry
In your experiment you weigh out 0.995 g NaHCO3. How much 1.0 M HCl should you add to get the most NaCl?
Saturday, February 1, 2014 at 1:38pm

Chemistry
Write a balanced equation to describe the following reactions: a) C14H30 is cracked to produce ethene, hydrogen and one other compound b) C16H34 is cracked to produce ethene and propene in a 2:1 ratio and only one other compound Thanks:)
Saturday, February 1, 2014 at 1:07pm

Chemistry
The total Calories for 2 tablespoons of crunchy peanut butter that contains 6 g of carbohydrate, 16 g of fat, and 7 g of protein. Express your answer using one significant figure. How do I figure out the amount of kcal per carb fat and protein? Thanks -MC
Saturday, February 1, 2014 at 12:13pm

college chemistry
How many megajoules are released when 9.0 gal of gasoline burns. how do I start to do this problem, and what are the steps to get there. thank you
Saturday, February 1, 2014 at 11:51am

Chemistry
Some N2 and H2 are placed in an empty 5.00 liter container at 500 degree celcius. When equilibrium is established, 3.0mol N2, 2.40mol H2 and 0.565mol of NH3 are present. Evaluate Kc for the reaction at 500 degree celcius.
Saturday, February 1, 2014 at 4:06am

Chemistry
Some N2 and H2 are placed in an empty 5.00 liter container at 500 degree celcius. When equilibrium is established, 3.0mol N2, 2.40mol H2 and 0.565mol of NH3 are present. Evaluate Kc for the reaction at 500 degree celcius.
Saturday, February 1, 2014 at 4:05am

ap chemistry
a 0.76 mol sample of pcl5 is placed in a 500 ml reaction vessel. what is the concentration of pcl5 when the reaction pcl5(g) ⇀↽ pcl3(g) + cl2(g) has reached equilibrium at 250◦c (when kc = 1.8)
Friday, January 31, 2014 at 8:54pm

chemistry
The molar mass of HCl is 36.5g use the fact that 1 amu = 1.6605x 10-24g power g to calculate Avogradro’s number.
Friday, January 31, 2014 at 4:10pm

Chemistry
Henry constant for the dissolving of nitrogen in water was reported as 7e-4 mol/Latm at 20 deg Celsius. What is the value of the equilibrium constant, K, at 20 deg Celsius for the process N2(g0)=N2(aq). If the amount of nitrogen in aqueous solution is .1 mol N2 and the partial...
Friday, January 31, 2014 at 1:57pm

chemistry
A chemist needs a HCl solution with a molarity of less than 0.400 M for an experiment. To find out if a sample of HCl solution can be used in the lab, the chemist performs a titration to neutralize 59.2 mL of the HCl with 45 mL of 0.400 M NaOH. Based on the results, will the ...
Friday, January 31, 2014 at 12:02pm

Chemistry
How much heat is evolved when 500kg of Ammonia is evolved according to the following equation: N2(g)+3H2(g)<->2NH3(g) [deltaH =-91.8K]
Friday, January 31, 2014 at 10:25am

Chemistry
If an element N has isotopic abundances X% of mass number 12, atomic number 6, and Y% of N of mass number 13, atomic number 6. If their relative isotopic mass is 12.35. Find X and Y.
Friday, January 31, 2014 at 10:01am

Chemistry
If an element N has isotopic abundances X% of mass number 12, atomic number 6, and Y% of N of mass number 13, atomic number 6. If their relative isotopic mass is 12.35. Find X and Y.
Friday, January 31, 2014 at 10:01am

Chemistry
Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 J K-1 mol-1, respectively) are assumed to be ...
Friday, January 31, 2014 at 3:04am

chemistry heelp
What volume of a solution that is 15.7 % (w/w) lolinic acid (density = 1.64 g/mL) contains 4.25 g of lolinic acid15. What is the molarity of a 20.2 % (w/w) solution of rossonic acid (423.6 g mol-1) that has a density of 1.78 g mL-1?
Friday, January 31, 2014 at 2:32am

Chemistry help pls helppppp
What volume of a solution that is 15.7 % (w/w) lolinic acid (density = 1.64 g/mL) contains 4.25 g of lolinic acid? What is the molarity of a 20.2 % (w/w) solution of rossonic acid (423.6 g mol-1) that has a density of 1.78 g mL-1?
Friday, January 31, 2014 at 1:37am

Chemistry
A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘C. How many grams of this gasoline would fill a 15.1gal tank?
Thursday, January 30, 2014 at 11:56pm

Chemistry
While in Europe, if you drive 109km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 23.0mi/gal ? Assume that 1euro=1.26dollars.
Thursday, January 30, 2014 at 11:48pm

chemistry
How many \({\rm m}^{3}\) are in 7.40 \({rm cm}^{3}\)?
Thursday, January 30, 2014 at 9:34pm

Chemistry
Consider the process where 1.3 moles of ice, initially at -30.0 C, is heated to 140.0 C at constant pressure of 1.00 atm. The molar heat capacities (Cp) for solid, liquid, and gaseous water (37.5 J K-1 mol-1, 75.3 J K-1 mol-1, 36.4 J K-1 mol-1, respectively) are assumed to be ...
Thursday, January 30, 2014 at 9:17pm

chemistry
How many cubic centimeters (cm3{\rm cm}^3) of olive oil have the same mass as 2.00LL of gasoline?
Thursday, January 30, 2014 at 7:51pm

chemistry
How many cubic centimeters (cm3{\rm cm}^3) of olive oil have the same mass as 2.00LL of gasoline?
Thursday, January 30, 2014 at 7:43pm

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
Thursday, January 30, 2014 at 6:53pm

AP Chemistry
If 400 mL of 3.2 molar HCl solution is added to 300 mL of 2 molar NaOH solution, what will be the molarity of NaCl in the resulting solution? Answer in units of M
Thursday, January 30, 2014 at 6:51pm

AP Chemistry
A 65 mL sample of a solution of sulfuric acid is neutralized by 46 mL of a 0.14 M sodium hydroxide solution. Calculate the molarity of the sulfuric acid solution. Answer in units of mol/L
Thursday, January 30, 2014 at 6:47pm

AP Chemistry
How many moles of NaOH will it take to neutralize 0.77 L of 0.81 M HCl? Answer in units of mol
Thursday, January 30, 2014 at 6:46pm

AP Chemistry
50.0 mL of an HCl solution with a pH of 3.5 neutralizes 200.0 mL of a Ca(OH)2 solution. What is the molarity of the Ca(OH)2 solution?
Thursday, January 30, 2014 at 6:42pm

AP Chemistry
Which one of the following compounds is not a salt? 1. Ca(ClO4)2 2. Fe(NO3)3 3. Cr(OH)3 4. Na2SO3 5. KMnO4
Thursday, January 30, 2014 at 6:37pm

help me with this language arts.
Multiple Choice 1. A court order that integrated the schools in a city would (1 point) bring students of different races together. close down the schools. keep students of different races apart. 2. Read the following passage from Through My Eyes: After the first day, I was ...
Thursday, January 30, 2014 at 6:22pm

college chemistry
DrBob222. when you move ice from zero to final T. Do you add 100 cal.?
Thursday, January 30, 2014 at 5:31pm

chemistry
How to do this equation!? Ok if you have 0.125g of copper at 23ºC. How much energy is needed to convert this copper to a temperature of 455ºC?
Thursday, January 30, 2014 at 4:45pm

chemistry
A certain volume of a gas at 298kelvin is heated such that its volume and pressure are now four times their original value.What is the new tewperature?
Thursday, January 30, 2014 at 3:37pm

college chemistry
a 42 piece of ice at 0.0 C is added to a sample of water at 8.0 C. all of the ice melts and the temperature of the water decreases to 0.0 C. how many grams of water were in the sample.
Thursday, January 30, 2014 at 3:26pm

chemistry
a 42 piece of ice at 0.0 C is added to a sample of water at 8.0 C. all of the ice melts and the temperature of the water decreases to 0.0 C. how many grams of water were in the sample.
Thursday, January 30, 2014 at 3:18pm

chemistry
Need help balancing this chemical reaction equation Ca(NO3)2+2NaOH>Ca(OH)2+2NaNO3
Thursday, January 30, 2014 at 2:06pm

chemistry
how many kilocalories of heat are released when 85g steam at 100 degrees C converted to ice at 0.
Thursday, January 30, 2014 at 12:22pm

Chemistry
What is the mass of sodium nitrate NaNO3 that you would need to add to 250 g of water in order to prepare a solution that is 0.200 molal in NaNO3?
Thursday, January 30, 2014 at 12:19pm

Chemistry
At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 1.00 kJ·s–1·m–2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 1.30 ...
Thursday, January 30, 2014 at 10:40am

Chemistry
Calculate the enthalpy change of formation for the following reactions using Hess's law, and the enthalpies of formation given in Figure 4: b) MgO +2HCl --> MgCl2 +H2O c)NaOH+ HCl -->NaCl +H20 Figure4: the given enthalpies of formation compound values are: Mg(OH)2 is...
Thursday, January 30, 2014 at 7:40am

Chemistry
A particular MP3 encoder can convert 79.0 kilobytes (kb) of music per second from a typical music CD. How many minutes will it take to convert 13.3 megabytes (Mb) of music from a CD?
Wednesday, January 29, 2014 at 10:13pm

Chemistry
An office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater (assume continuous operation)?
Wednesday, January 29, 2014 at 10:02pm

chemistry
A solution is prepared by dissolving 10.00 grams of a monobasic salt in a total volume of 1.00 litres. The 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...
Wednesday, January 29, 2014 at 9:36pm

Chemistry
The volume of a sphere is given by V=(4/3)3.14r^3, where r is the radius. Compute the volume of a sphere with a radius of 329pm. state your answer in units of m^3.
Wednesday, January 29, 2014 at 9:33pm

chemistry
calculate the heat needed at 0c each of the following joules to freeze 275gof water
Wednesday, January 29, 2014 at 9:22pm

Chemistry
From data below, calculate the total heat (in J) associated with the conversion of 0.265 mol ethanol gas (C2H6O) at 451°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. (Pay attention to the sign of the heat.)
Wednesday, January 29, 2014 at 8:54pm

general chemistry II
Phosphoric Acid is usually obtained at an 85% phosphoric acid solution, by mass. If this solution is 15 M, what is the density of the solution? What is its MOLALITY?
Wednesday, January 29, 2014 at 7:45pm

chemistry
I'm not sure how to solve this: If 125 cal of heat is applied to a 60.0-g piece of copper at 20.0∘C , what will the final temperature be? The specific heat of copper is 0.0920 cal/(g⋅∘C). Express the final temperature numerically in degrees Celsius Thanks
Wednesday, January 29, 2014 at 7:20pm

Chemistry
I have this problem: How much heat energy is required to raise the temperature of 0.365kg of copper from 23.0 ∘C to 60.0 ∘C? The specific heat of copper is 0.0920 cal/(g⋅∘C). I did the equation using formula Heat= mass x change in temperature x specific...
Wednesday, January 29, 2014 at 1:03pm

chemistry
Ammonium chloride and sodium nitrite react to form sodium chloride, water and nitrogen gas. If 6.33 moles of ammonium chloride react with sodium nitrite, how many grams of sodium chloride will be produced?
Wednesday, January 29, 2014 at 11:18am

chemistry
osmotic pressure of a solution containing 7g of protein in 100ml of solution is 20mmhg at37celsius calculate molecular mass of the protein
Wednesday, January 29, 2014 at 10:08am

chemistry
If someone swallows ammonia, what would they drink to counteract it? Water, Milk, Orange Juice, Tea
Wednesday, January 29, 2014 at 8:45am

chemistry
calculate the number of calcium ions present in 11.1 grammes ofcalcuimchloride(1mole=6.02*10^23)
Wednesday, January 29, 2014 at 3:57am

chemistry
calculate the number of calcium ions present in calcuimchloride
Wednesday, January 29, 2014 at 3:50am

Pages: <<Prev | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | Next>>

Post a New Question | Current Questions

Homework Help: Science

Search
Members