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July 23, 2014

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

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AP Chemistry
Iron pyrite (FeS2) is the form in which much of the sulfur exists in coal. In the combustion of coal, oxygen reacts with iron pyrite to produce iron(III) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to acid rain. What mass of...
Sunday, February 16, 2014 at 6:56pm

AP Chemistry
We observe that 5 grams of a gaseous com- pound occupies 2083 mL at 50 degrees C and 574 torr. What is the molecular weight of the compound? Answer in units of g/mol
Sunday, February 16, 2014 at 6:54pm

AP Chemistry
A 2.8 gram sample of a gaseous substance occupies 12 L at 47 degrees C and 683 torr. What is the density of the gas under these conditions? Answer in units of g/L
Sunday, February 16, 2014 at 6:54pm

AP Chemistry
What pressure would a mixture of 3.2 grams of O2, 6.4 grams CH4, and 6.4 grams of SO2 exert if the gases were placed in a 4.1 liter container at 127 degrees C? Answer in units of atm
Sunday, February 16, 2014 at 6:53pm

AP Chemistry
Nitroglycerin is a shock-sensitive liquid that detonates by the reaction 4C3H5(NO3)3(ℓ)-> 6N2(g)+10H2O(g)+12CO2(g)+O2(g) Calculate the total volume of product gases at 201 kPa and 273 degrees C from the detonation of 3.3 lb (1496.9 g) of nitroglycerin. Answer in units...
Sunday, February 16, 2014 at 6:51pm

AP Chemistry
To what temperature must a sample of helium gas be cooled from 110 degrees C to reduce its volume from 4.9 L to 0.7 L at constant pressure? Answer in units of K
Sunday, February 16, 2014 at 6:49pm

Chemistry
Carbon monoxide and chlorine gas react to form phosgene: CO(g)+Cl2(g)⇌COCl2(g) Kp = 3.10 at 700 K If a reaction mixture initially contains 319torr of CO and 220torr of Cl2, what is the mole fraction of COCl2 when equilibrium is reached?
Sunday, February 16, 2014 at 6:46pm

Chemistry
If 0.10 mol of Zn(s) is reacted to 150.0 ml of 1M HCl, what is the concentration of Zn+2 in the solution after the reaction is complete? Assume the solid zinc does not affect the volume.
Sunday, February 16, 2014 at 5:22pm

Chemistry
Given the balanced equation representing a reaction : 2Fe+ 3Cu^2+ --> 2Fe^3+ +3Cu When the iron atoms lose six moles of electrons, how many moles of electrons are gained by the copper ions? (1) 12 moles (2) 2 moles (3) 3 moles (4) 6 moles how would i even start solving a ...
Sunday, February 16, 2014 at 5:16pm

chemistry
What is the density of a 33.13 g irregularly shaped object if the initial volume of water was 22.9 ml and the volume rose to 64.8 ml after the object was added?
Sunday, February 16, 2014 at 3:05pm

chemistry
What is the density of a 19.74 g object if the dimensions of the block are: length = 12.6 mm height = 2.50 cm width = 0.0140 m
Sunday, February 16, 2014 at 3:04pm

chemistry
What is the density of a block of unknown material with a mass of 17.02 g if the dimensions are: length = 2.2 cm height = 1.7 cm width = 2.7 cm
Sunday, February 16, 2014 at 3:04pm

chemistry
A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.12 ml? [assume the density of water is 1.00g/mL]
Sunday, February 16, 2014 at 2:58pm

AP Chemistry
A solution is made by mixing exactly 500 mL of 0.167 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentrations of H+, CH3COOH, CH3COO-, OH-, and Na+.
Sunday, February 16, 2014 at 1:55pm

Chemistry
i need to write to chemical formula for sulphur(II)iodide but both are non metals what do i do and i get confused sometimes cause i don't know when the metal/non metal gets a one charge (for the valences) ex. NiO =Ni1O2 =Ni2O =Nickel(I)Oxide ex. NiF2 =Ni1F2 =Ni2F =Nickel(...
Sunday, February 16, 2014 at 1:38pm

Chemistry
Compare and contrast the combustion of sugars to biological metabolism of sugars
Sunday, February 16, 2014 at 1:37pm

chemistry
a metal object has a mass of 8.37g. when it was placed in a graduated cylinder containing 20.0ml of water, the water level rose to 23.1 ml. what is the density and identity of the metal?
Sunday, February 16, 2014 at 10:55am

CHEMISTRY
Determine the followng solutes disolved in 100 g of water will form unsaturated or saturated solution a. 180g Kl at 60DGREE CELSIUS . 60g KBr at 30 DEGREE CELCIUS c170g KNO3 at 50 dgree celcius d. 20 g NaCl at 90Degree celcius
Sunday, February 16, 2014 at 10:29am

chemistry
determine the solubility in g/100 g water of A. KNO3 at 90DEGREE CELCIUS B. KBr at 80 degrees celcius C. Kl at 0degree celcius D. KCl at 40 DEGREE CELCIUS
Sunday, February 16, 2014 at 10:27am

Chemistry
At 25 °C, the density of a 40.0% (m/m) solution of sucrose, C12H22O11, in water is 1.18 g/mL. What is the molarity of this solution?
Sunday, February 16, 2014 at 1:12am

Chemistry
1) Calculate the energy. in joules, of a photon of wavelength 1.250x 10^3 nm 2) If 3.011x 10^23 molecules have a mass of 20.04 grams, what is the molar mass of the substance? Is it 40.07g/mol? 3) 47.5g of Boron contains __________ atoms of B? Is it 2.65x10^24 4) What is the ...
Saturday, February 15, 2014 at 10:26pm

Chemistry
A piston is holding 125 mL of gases at a temperature of 300 K and a pressure of 2.39 atm. What is the volume of the gases if the temperature is increased to 500K and the pressure falls to 2.15 atm?
Saturday, February 15, 2014 at 10:11pm

chemistry
a 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 4.23 g of CO2 and 1.01 g of H2O as the only carbon and hydrogen containing products respectively. Another sample of the same compound, of mass 4.14 g, ...
Saturday, February 15, 2014 at 9:24pm

Chemistry
If a sample of gas occupies 25.0 mL at -25°C and 650 mmHg, what is the volume at 25°C and 353 mmHg? (Could you please show me step by step?)
Saturday, February 15, 2014 at 7:41pm

Chemistry 106 ch 11
Calculate the heat released when 73.5 g of steam at 122.0 C is converted to water at 39.0C. Assume that the specific heat of water is 4.184 J/g C, the specific heat of steam is 1.99 J/g C, and change in heat vap =40.79 kJ/mol for water.
Saturday, February 15, 2014 at 6:23pm

analytical chemistry
You are asked to make a 0.3M CaCl2 solution in a flask that can hold 200 ml. How would you do it?
Saturday, February 15, 2014 at 3:59pm

analytical chemistry
How much NaOH (in grams) would there be in 0.25 litre of a 0.3M solution?
Saturday, February 15, 2014 at 3:58pm

Chemistry
An aqueous salt solution has a freezing point of -.5 degrees Celsius and causes neither swelling or shriveling of cells. The kf of water is 1.86 K kg/mol. What is the osmotic pressure that is exerted on cells when placed in pure water? (ignore differences between molarity and ...
Saturday, February 15, 2014 at 11:43am

Chemistry
Assume that some of the magnesium nitride is not completely converted to magnesium hydroxide and subsequently to magnesium oxide. Will your empirical formula be too high in magnesium or too high in oxygen? Please show any calculations you used to determine your answer.
Saturday, February 15, 2014 at 10:08am

chemistry
you have two sample of mannitol .one melted between 168-169 c and the other melted between 161-168 .which sample has the greater purity? why?
Saturday, February 15, 2014 at 6:24am

chemistry
when does 4+4=9
Saturday, February 15, 2014 at 12:10am

chemistry
A solution is made by dissolving 7.084 g of aluminum nitrate, Al(NO3)3, in 123.0 g of water. What is the mass percentage of solute in this solution? this feels like a simple problem but i just don't know. divide the two?
Friday, February 14, 2014 at 11:09pm

chemistry
A sample of gas has a volume of 1.30 L at STP. What is the temperature in °C if the volume is 13.0 L at 2.00 atm?
Friday, February 14, 2014 at 7:44pm

Chemistry
What is the final Celsius temperature if 4.42 L of nitric oxide gas at 35°C is cooled until the volume reaches 1.00 L? Assume the pressure remains constant.
Friday, February 14, 2014 at 7:44pm

Chemistry
If the surface area of a human body is 17,500 square centimeters, what is the total weight of the atmosphere on a human body expressed in pounds?
Friday, February 14, 2014 at 7:08pm

Chemistry
A sample of oxygen gas occupies 500.0 mL at -185°C and 75.0 cmHg. Calculate the temperature in °C if the gas has a volume of 221.0 mL at a 55.0 cmHg.
Friday, February 14, 2014 at 6:10pm

Chemistry
A sample of gas has a volume of 1.30 L at STP. What is the temperature in °C if the volume is 13.0 L at 2.00 atm?
Friday, February 14, 2014 at 6:09pm

Chemistry
Chester makes 1L of a 0.01M HCl solution and measure the pH. Burt then adds 5.80 g of sodium chloride to Chester’s solution and measures the pH. Calculate the difference between the two pH values obtained.
Friday, February 14, 2014 at 6:05pm

chemistry
Breaking the hydrogen bond between two water molecules is called dissociation
Friday, February 14, 2014 at 4:51pm

Chemistry
If the equilibrium constant K equals .05, and the reaction C3H8=C3H6 + H2 (all gases), starts with pure C3H8 and is allowed to reach equilibrium at 200 K at a total pressure of 2 bar. Calculate the partial pressure of H2 at equilbirum.
Friday, February 14, 2014 at 3:25pm

chemistry
what the balance equation for solid carbon
Friday, February 14, 2014 at 3:18pm

Chemistry
Assume that some of the magnesium nitride is not completely converted to magnesium hydroxide and subsequently to magnesium oxide. Will your empirical formula be too high in magnesium or too high in oxygen? Please show any calculations you used to determine your answer. Where ...
Friday, February 14, 2014 at 3:08pm

Chemistry
There are two open beakers placed in a sealed box at constant temperature. Beaker 1 has 25 ml of .1 M NaCl in water. Beaker 2 has 45 ml of .05 M NaCl in water. What happens as the system goes towards equilibrium and what is the final contents in each beaker?
Friday, February 14, 2014 at 2:04pm

Chemistry
The free energy profile as the reaction goes from reactants to products is a straight diagonal line from 50 kj/mol to 80 kj/mol. Is the reaction exothermic or endothermic? Does the reaction involve only pure solids and liquids? Is the equilibrium constant greater than, equal ...
Friday, February 14, 2014 at 2:02pm

chemistry
2Hg+O2=2HgO if 50.0 grams of mercury reacts with 50.0 grams of oxygen gas, how many grams of mercury(ii)oxide are produced?
Friday, February 14, 2014 at 2:23am

chemistry
A sample of barium contains 3.20g of barium. How many atoms of barium are contained in the sample?
Thursday, February 13, 2014 at 11:38pm

chemistry
An ice-bath made with sodium chloride will be 9 ± 1 oC when the solution is about 23% sodium chloride by mass. The density of solid sodium chloride is about 2 g/cm3. What volume of solid NaCl would you add to 200 g water to make a 23% NaCl solution? ANY HELP WOULD BE ...
Thursday, February 13, 2014 at 9:37pm

chemistry
If the surface area of a human body is 16,700 square centimeters, what is the total weight of the atmosphere on a human body expressed in pounds?
Thursday, February 13, 2014 at 9:31pm

chemistry
Calculate the final Celsius temperature of sulfur dioxide if 0.500 L of the gas at 35°C and 650 mmHg is heated until the pressure reaches 742 mmHg. Assume the volume remains 0.500 L.
Thursday, February 13, 2014 at 9:30pm

Chemistry
What mass of NaOH is required to create 500 mL of a .4 M solution of Sodium Hydroxide(aq)?
Thursday, February 13, 2014 at 8:30pm

Chemistry
I am supposed to name this using IUPAC method for binary compounds (i think) arsenic(111) sulfide silicon tetraiodide antimony (111)bromide ammonia gas lead(11) and the things in the brackets are supposed to be the roman numerals
Thursday, February 13, 2014 at 7:44pm

chemistry
A 1M solution (200ml) of NH3 (Kb of ammonia=1.8*10-5) is added to 200ml of 0.5M HCl. Calculate: a) the resulting pH? b) The delta ph due to addition of 15ml of 1M HNO3 to solution obtained in part a c) I am stuck on this: The delta ph due to addition of 15ml of 1M NaOH to the ...
Thursday, February 13, 2014 at 7:05pm

chemistry
solve net ionic equATION Ba(OH)2 + Na2SO4
Thursday, February 13, 2014 at 4:26pm

chemistry
If we have a concentration of H+ at 5 x 10-2 mol/L, what is the pH value? A. -1.30 B. 0 C. 1.3 D. 2.6
Thursday, February 13, 2014 at 1:09pm

chemistry
2 nacl (aq) + h2so4 ==> na2so4 (aq) + 2 hci (g)
Thursday, February 13, 2014 at 9:48am

Chemistry
For chem we did a kinetics lab based on the rate of reaction of peroxydisulfate ion with iodide ion. I'm supposed to find the amount of S2O3 ^2- consumed for every trial (in moles) If someone could just explain how to do that with the information I currently have, that ...
Thursday, February 13, 2014 at 12:10am

chemistry
What is the definition of an equivalent? a lab procedure requires 1.25 equivalents of zinc powder. How do I determine how much zinc that is?
Wednesday, February 12, 2014 at 11:45pm

chemistry
very hot sinc will react with steam to form zinc oxide and hydrogen. If 5.4 liters of hydrogen was used to use up 20 g of zinc completely. What is the percent yield of this process
Wednesday, February 12, 2014 at 11:28pm

Chemistry
Explain how a person bailing out a row boat with a leak could represent a state of physical equilibrium.
Wednesday, February 12, 2014 at 9:06pm

Chemistry
Br2(l)+Cl2(g) (double arrow) 2BrCl(g) dH=+29.4 kJ/mol I am having trouble understanding this. Will the system shift left, right, or unchanged and why? a.Increasing Temp. b. Increasing pressure in flask by adding Ar. c. Increasing volume of flask d. Adding Br2(l)...is answer ...
Wednesday, February 12, 2014 at 9:02pm

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 ...
Wednesday, February 12, 2014 at 8:52pm

Chemistry
What are four types of interactions between liquid molecules that affect the boiling point.
Wednesday, February 12, 2014 at 8:47pm

Chemistry- acids/bases
Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.
Wednesday, February 12, 2014 at 7:14pm

Chemistry- acids/bases
Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.
Wednesday, February 12, 2014 at 7:13pm

AP Chemistry- Acids
What is the pH of a solution obtained by adding 145mL of 0.575M HCl to 493mL of a HNO3 solution with a pH of 1.39?
Wednesday, February 12, 2014 at 6:27pm

Chemistry
What mass, in grams, of sodium carbonate is required for complete reaction with 8.35g of nitric acid to produce sodium nitrate, carbon dioxide, and water? [Show work]
Wednesday, February 12, 2014 at 6:18pm

Chemistry
Exactly 1.0 mole of oxygen and 7.0 moles of nitrogen gas are in a container. The total gas pressure is 5.7 atm. What is the partial pressure of nitrogen in atm? I'm not sure how to go about setting up the problem. Any help is appreciated!
Wednesday, February 12, 2014 at 11:52am

chemistry
you have a metal tank containing 74.0moles of nitrogen gas at a pressure of 15.0atm.If the pressure is measured at a temperature of 20.0c,then the volume of the tank must be how many liters(Round answer to one decimal place.
Wednesday, February 12, 2014 at 11:44am

Chemistry
when the pressure on 2.5liters of oxygen is decreased from 2.0atm to 1.0atm,the volume of the gas becomes how many liters.(round answer to one decimal place.
Wednesday, February 12, 2014 at 11:40am

Chemistry
A gas diffuses twice as fast as CF4 (g). The molecular mass of the gas is: I'm not sure how to figure this out without the rates of diffusion.
Tuesday, February 11, 2014 at 10:56pm

Chemistry - DrBob222
C6H14 + Cl2 in UV light Below are 5 products, say which one cannot be a product, prove this by showing how each of the other products were formed from the equation above. 1-chlorohexane 2-chlorohexane 2,2-dichlorohexane dodecane hex-1-ene
Tuesday, February 11, 2014 at 10:41pm

Chemistry
I need to make a calorimeter for my high school chemistry class. Any suggestions? I have a few ideas but I can't figure out how I would light the food on fire from inside the container. I have to burn the food and measure the heat through water. thank you!!!!!
Tuesday, February 11, 2014 at 10:29pm

Chemistry
Based solely on the amount of available carbon, how many grams of sodium oxalate Na2C2O4 can be obtained from 255 g of C6H6?
Tuesday, February 11, 2014 at 10:09pm

Chemistry
three separate questions 1. An empty graduated cylinder weighs 82.450 g. When filled to 50.0 mL, with an unknown liquid it weighs 110.810 g. What is the density of the unknown liquid? 2. It is valuable to know that 1 milliliter (mL) equals 1 cubic centimeter (cm^3) or cc.). ...
Tuesday, February 11, 2014 at 10:03pm

Chemistry urgent
C6H14 + Cl2 in UV light Below are 5 products, say which one cannot be a product, prove this by showing how each of the other products were formed from the equation above. 1-chlorohexane 2-chlorohexane 2,2-dichlorohexane dodecane hex-1-ene
Tuesday, February 11, 2014 at 10:00pm

chemistry
Show calculation setups and answers for the following problems. a. convert 21 C Celsius to degrees Fahrenheit. b. convert 101 F Fahrenheit to degrees Celsius. c. convert 15 nm into km.
Tuesday, February 11, 2014 at 9:53pm

chemistry
Three part question Two students each measured the density of a quartz sample three times: Student A Student B 1. 3.20g/mL 2.82g/mL 2. 2.58g/mL 2.48g/mL 3. 2.10g/mL 2.59g/mL mean 2.63g/mL 2.63 g/mL a. which student measured density with the greatest precision? explain your ...
Tuesday, February 11, 2014 at 9:49pm

chemistry
The directions state "weigh about 5 grams of sodium chloride". Give minimum and maximum amounts of sodium chloride that would satisfy these instructions.
Tuesday, February 11, 2014 at 9:42pm

chemistry
In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 25.0mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km=0.6214mi and 1gal=3.78L.
Tuesday, February 11, 2014 at 3:51pm

Analytical Chemistry
25.0 mL of a 0.1067 M Solution of nickel (II) sulfate is diluted to 250 mL with water. 10 mL of this solution is taken and diluted to 1.0 L. Calculate the concentration of [Ni2+] in the final solution in ppm.
Tuesday, February 11, 2014 at 2:53pm

Science
Associate each item in the table with at least one field of science and one area of technology/engineering. Choose from the terms given at the bottom. Automobile aspirin shirt computer pesticide satellite robot atomic bomb vaccination can of soup polyester wrapper skyscraper ...
Tuesday, February 11, 2014 at 1:00am

College Chemistry
calculate the initial concentration of SCN- ions and Fe3+ ions when a solution was prepared by mixing 3.00mL of 0.00280M KSCN, 6.00 mL of 0.250M Fe(NO3)3 and 16ml of 0.050M HNO3.
Monday, February 10, 2014 at 11:31pm

chemistry
In an experiment, ethanol standards and an n-propanol standard were to be prepared in water. The ethanol standards were weight% and the n-propanol could be either v/v or weight%. One of the questions for the report asks why it was ok to make the n-propanol a v/v%. I overheard ...
Monday, February 10, 2014 at 11:16pm

chemistry
a solution is prepared by mixing 2.17g of an unknown non-electrolyte with 225.0g of chloroform. The freezing point of the resulting solution is -64.2 C . The freezing point of pure chloroform is -63.5 C and its kf= 4.68C m^-1 . What is the molecular mass of the unknown? i know...
Monday, February 10, 2014 at 11:16pm

Chemistry
Chloroform CHCl is an important solvent. It is produced by a reaction between methane and chlorine. How many g CH4 are needed to produce 50.0g CH4 +Cl3+ CH_4 + 3Cl_2 ->CHCl_3 + 3HCl}
Monday, February 10, 2014 at 11:05pm

Chemistry
2 SO2 (g) + O2 (g) → 2 SO3­↑ Assuming STP, how many grams of oxygen are needed to produce 19.8 liters of SO3?
Monday, February 10, 2014 at 11:01pm

chemistry
A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.22 ml?
Monday, February 10, 2014 at 9:04pm

chemistry
What is the combustion of ethane (dicarbon hexahydride)
Monday, February 10, 2014 at 8:29pm

Chemistry
Where am I going wrong? Law, Theory or Hypothesis 1) A doctor thinks, but has not verified, that a patient with stomach pain has appendicitis - Hypothesis 2) a description that predicts what happens, but does not explain how -Hypothesis 3) an explanation that has been tested ...
Monday, February 10, 2014 at 8:17pm

chemistry
Calculate the number of moles in 3.50 x 1021 atoms of silver.
Monday, February 10, 2014 at 8:15pm

Chemistry:Important!!!!!!!
A student begins with 9.7 mL of a 0.26 M Cu(NO3)2 solution and performs copper cycle lab. She recovers 0.075 grams of copper metal. A) What is the Theoretical Yield B) What is the Actual Yield C) What is the Percent Yield
Monday, February 10, 2014 at 7:55pm

chemistry
Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of four particles per second. How many years would it take to count 8.10 x 10^23 particles? Assume that there are 365 days in a...
Monday, February 10, 2014 at 7:49pm

chemistry
Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of four particles per second. How many years would it take to count 8.10 x 10^23 particles? Assume that there are 365 days in a...
Monday, February 10, 2014 at 7:49pm

chemistry
how many grams of sodium oxalate, Na2C2O4, could be obtained from 213 g of C6H6?
Monday, February 10, 2014 at 7:19pm

Chemistry
A 76.00-pound flask of mercury costs $151.50. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values. What is the price of one pound of mercury? =$1.99 What is the price of one gram of mercury? =$...
Monday, February 10, 2014 at 7:17pm

Chemistry
A 76.00-pound flask of mercury costs $151.50. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values. What is the price of one pound of mercury? =$1.99 What is the price of one gram of mercury? =$...
Monday, February 10, 2014 at 7:17pm

Chemistry
A 76.00-pound flask of mercury costs $151.50. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values. What is the price of one pound of mercury? =$1.99 What is the price of one gram of mercury? =$...
Monday, February 10, 2014 at 7:16pm

Chemistry
A student begins with 9.7 mL of a 0.26 M Cu(NO3)2 solution and performs copper cycle lab. She recovers 0.075 grams of copper metal. A) What is the Theoretical Yield B) What is the Actual Yield C) What is the Percent Yield
Monday, February 10, 2014 at 6:57pm

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.
Monday, February 10, 2014 at 2:32pm

Chemistry Urgent
1) 30cm3 of methane and ethane mixed with 100cm3 of O2 at RTP. Explosion occurs, on cooling 61.5cm3 remained. Find the percentage by volume of each gas in the mixture 2)32cm3 of a mix of CO2, CH4 and H2 mix with 50cm3 of O2 and exploded after cooling to RTP, volume noted is ...
Monday, February 10, 2014 at 1:47pm

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