Sunday
February 26, 2017

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

Chemistry
A sample of a substance (containing only C, H, and N) is burned in oxygen. 7.961 g of CO2, 1.164 g of H2O and 1.551 g of NO are the sole products of combustion. What is the empirical formula of the compound?
Sunday, February 26, 2017 by Cindy

Chemistry
Calculate how many moles of Na2S2O3 must be added to dissolve 0.020 mol AgBr in 1.0 L of water at 25°C (assume constant volume). AgBr(s) ↔ Ag+(aq) + Br−(aq) Ksp = 3.3 x 10^−13 Ag+(aq) + 2S2O32−(aq) ↔ [Ag(S2O3)2]3−(aq) Kf = 2.0 x 10^13 (1) 0.0078 mol (2) 0.048 mol...
Sunday, February 26, 2017 by bill

Chemistry
How many hydrogen atoms are present in 6.49 moles of hydrogen molecules
Sunday, February 26, 2017 by Quaniece

Chemistry
When mixing 10m/L of 6 M HCl (diluted with 10 mL of water) with 0.1 g of Mg, how many moles of H2 are created and how many moles of Mg are reactant? I understand I must use n=(PV)/(RT) to find H2, since it is a gas, but the constant R is still confusing to me and I cannot ...
Sunday, February 26, 2017 by Kendra

Chemistry
A forensic scientist is given a white substance that is thought to be cocaine. The substance is found to have a percent composition: 49.48% C, 5.19% H, 28.85% N, and 16.48% O. What is the empirical formula for this substance? Is it cocaine?
Sunday, February 26, 2017 by Yo

chemistry
describe briefly a suitable laboratory procedure for separating a mixture of NaCl4,NH4Cl and PbCl2
Sunday, February 26, 2017 by value

chemistry
Under the same condition of temp.and pressure hydrogen gas diffuses 8 times as fast as gas y.calculate the relative molecular mass of gas y.(R.M M_2
Sunday, February 26, 2017 by favour

chemistry
A certain amount of gas occupy 5.0dm cube at 2atm.and 10 degree centigrade .calculate d number of mole present(R_0.082atm)
Sunday, February 26, 2017 by favour

chemistry
Under the same temp.and pressure ,nitrogen gas diffuses 8 times as fast as gas y .calculate the relative molecular mass of gas y.
Sunday, February 26, 2017 by favour

CHEMISTRY
Determine the concentrations of Na2CO3, Na , and CO32– in a solution prepared by dissolving 2.22 × 10–4 g Na2CO3 in 2.25 L of water. Express all three concentrations in molarity. Additionally, express the concentrations of the ionic species in parts per million (ppm). ...
Sunday, February 26, 2017 by Hannah

chemistry
How much energy is evolved during the formation of 98.7 g of Fe, according to the reaction below? Fe2O3(s) + 2 Al(s) → Al2O3(s) + 2 Fe(s) ΔH°rxn = -852 kJ A. 482 kJ B. 753 kJ C. 1.51 × 10ee3 kJ D. 4.20 × 10ee3 kJ
Saturday, February 25, 2017 by mauds

Chemistry
Calculate the molarity of the H2SO4 solution if 17.45 mL of NaOH was necessary to reach the endpoint of titration. The molarity of the NaOH solution was 0.425 M and 26.30 mL of H2SO4 was added to the Erlenmeyer flask. H2SO4(aq) + 2 NaOH (aq) -----> Na2SO4 (aq) + 2 H2O (l) I...
Saturday, February 25, 2017 by Audrey

chemistry
hw much 0.1N NaoH would u have added to 30ml of 0.1N Hcl at a equivalent point?
Saturday, February 25, 2017 by Deborah

Chemistry
Hydrogen iodide decomposition via a second-order process to produce hydrogen and iodine according to the following chemical equation: 2 HI(g) -> H2 (g) + I2 (g) If it takes 489 seconds for the initial concentration of HI to decrease from 0.0693 M to 0.0174 M, what is the ...
Friday, February 24, 2017 by Lynn

Chemistry
sulfuric acid can be prepared by a multistep process summarized as: 2 SO2 + O2 + 2 H2O--> 2 H2SO4 What mass of sulfuric acid could be produced daily by a process using 38 kg per day of sulfuric dioxide with a 70% conversion efficiency ("yield"), assuming that sulfuric ...
Friday, February 24, 2017 by Anonymous

Chemistry
How many grams of a solid mixture containing strontium chloride would one need to make 558 mL of a 0.100 M strontium chloride solution, if the solid mixture contains 58.6% strontium chloride by weight
Friday, February 24, 2017 by Anonymous

Chemistry
High-pressure sodium vapor lamps are used in street lighting. The two brightest lines in the sodium spectrum are at 589.00 and 589.59 nm. What is the diffrence in energy per photon of the radiations corresponding to these two lines?
Friday, February 24, 2017 by Anonymous

Chemistry
Calculate the energy needed to ionize an electron of H atoms from its second excited state.
Friday, February 24, 2017 by Lala

Chemistry
A hydrogen atom in one of its excited states ha an energy of -1.5129^20 J. What is the frequency of radiation is emitted when the atom relaxes down to its ground state?
Friday, February 24, 2017 by Kara

Chemistry
Consider a 1.0 L container of Neon gas at STP. Will the average kinetic energy, average velocity,and frequency of the collisions of gas molecules with the walls of the container increase, decrease, or remain the same under each of the following conditions? a. The temperature ...
Friday, February 24, 2017 by Elizabeth

Chemistry
A compressed gas in a cylinder contains 1000.0 g of argon gas. The pressure inside the cylinder is 2050 psi at 18 degrees Celcius. How much gas remains if the pressure is decreased to 650. psi at a temperature of 26 degrees Celcius?
Friday, February 24, 2017 by Chloe

chemistry, science
how many moles of he atoms are there in 0.02g of he?
Friday, February 24, 2017 by anonymous

chemistry
A 75.0g sample of liquid contains 17.5% by mass of H3PO4 (molar mass = 98.0g/mol). If 215.0mL of Ba(OH)2 is needed to completely neutralize the acid, determine the concentration of the Ba(OH)2 solution used
Friday, February 24, 2017 by ram

Chemistry
Determine the concentration for the following solutions 2.0g KOH is dissolved in water to make 200.0 ml of solution
Thursday, February 23, 2017 by Sara

Chemistry
How much energy (in kj) is required to ionize 2.78 moles of hydrogen atoms the right answer is: 3.65x10^3 kj wondering how they got this answer.
Thursday, February 23, 2017 by CL

Chemistry
Calculate the ionization energy (in kj) for a mole of hydrogen atoms, making the assumption that ionization is the transition from n=1 the correct answer is : 1.31x10^3 kJ
Thursday, February 23, 2017 by CL

Chemistry
When 25g of ice lose 2092 J of heat at 0 degrees Celsius, what will be the new temperature of the ice? Calorimetry problem
Thursday, February 23, 2017 by Evelin

chemistry
already missed question so I just need help figuring out what I did. Small amounts of chlorine gas can be gener- ated in the laboratory from the reaction of manganese(IV) oxide with hydrochloric acid: 4 HCl(aq) + MnO 2 (s) → 2 H 2 O( ℓ ) + MnCl 2 (s) + Cl 2 (g). What mass ...
Thursday, February 23, 2017 by Pat

Chemistry
what is the minimum uncertainty in the position of an electron moving at a speed of 4 x 10^6 m/s ± 1 %? I keep getting 1.44 x10^-11 m, but the right answer is 1x10^-9 m.
Thursday, February 23, 2017 by CL

chemistry
how can i determine via infrared spectrum whether the alcohol that was oxidized was primary or secondary? i did a lab experiment in which we oxidized a diol with bleach and i need to figure out which -OH group was oxidized into a C=O. What are the signs of whether the -OH is ...
Thursday, February 23, 2017 by Alexa

Chemistry
4.72 g of a compound of carbon, hydrogen, and silver was burned in an atmosphere of oxygen, yielding 7.95 g of CO2, 1.02 g of H2O and 3.02 g of a mixture of silver and silver oxide. Because the production of this mixture yielded an indeterminate value for the amount of silver...
Thursday, February 23, 2017 by CL

Chemistry
Can geranium be used to detect infrared radiation emitted by a remote control device that has a wavelength of 902 nm? the work function (binding energy) of geranium is 7.61 x10^-19 J?
Thursday, February 23, 2017 by CL

chemistry help, urgent!
Which of the following should you add to stabilize the pH of a solution? solute acid <<my choice buffer base
Thursday, February 23, 2017 by sammy

Chemistry
the lead (II) nitrate in 25.49 ml of a 0.1338M solution reacts with all of the aluminum sulfate in 25.00 ml solution. What is the molar concentration of the aluminum sulfate in the original aluminum sulfate solution? For a question like this how do I find out it is a 3:1 ratio...
Thursday, February 23, 2017 by CL

Chemistry Help
The most effective buffer solutions have equal concentrations of salt and acid (or base). Find the pH of a buffer solution with equimolar concentrations of: (a) HCOOH and NaCOOH (Ka = 3.5 x 10-4 for HCOOH) (b)CH3NH2 and CH3NH3Cl (Kb = 3.7 x 10-4 for CH3NH2) Thank you!
Thursday, February 23, 2017 by Luke

Chemistry
Calculate the molar mass of a molecular compound if a solution of 6.70 g of the compound in 22.60 g of water boils at 100.78 degrees C (at 760mmHg).
Thursday, February 23, 2017 by chemwizard

Chemistry
A is a solution of hydrochloric acid containing 3.650g of HCl in 1dm3 of solution. B is a solution of impure sodium carbonate. 25cm3 of B require 22.7cm3 of A for complete reaction. Given that 5.00g of impure B was dissolved in1dm3 solution,what is the percentage by mass pf ...
Thursday, February 23, 2017 by Victor

Chemistry
How much ethylalcohol must be added to 1litre of water so that the solution will freeze at 14 farenite, kf of wa ter is 1.86 c/mol
Wednesday, February 22, 2017 by Ria

Chemistry
the lead (II) nitrate in 25.49 ml of a 0.1338M solution reacts with all of the aluminum sulfate in 25.00 ml solution. What is the molar concentration of the aluminum sulfate in the original aluminum sulfate solution?
Wednesday, February 22, 2017 by CL

chemistry
calculate the volume of hydrogen that will combine with 40 litres of oxygen to form steam at 150°C and atmospheric pressure?
Wednesday, February 22, 2017 by lokeswari

Chemistry
Compound A consisting of carbon and hydrogen only. The compound was found to contain 80% carbon by mass,cal. its empiri.
Wednesday, February 22, 2017 by Mverve Edwin, SP

Chemistry
Find the ratio of the volumes of NaC3H5O3 soloution to HC3H5O3 (lactic acid) required to prepare a buffer with a pH of 3.90. the solutions are equal in molarity. Ka = 1.4 x 10-4 for HC3H5O3. ratio = ________ mL of NaC3H5O3 per mL of HC3H5O3
Wednesday, February 22, 2017 by Bill

Chemistry
Find the pH of a buffer solution with equimolar concentrations of: HCOOH and NaCOOH (Ka = 3.5 x 10-4 for HCOOH)a
Wednesday, February 22, 2017 by Bill

Chemistry
A 5.00g of sodium chloride is Dissolved m, exactly 250 mL calibrated volumetric flask, what is the molarity of the solution?
Wednesday, February 22, 2017 by Dillan

CHEMISTRY
Mg(s) + FeCl2(aq) → MgCl2(aq) + Fe(s). IS THE IRON(II) ION OXIDIZED?
Wednesday, February 22, 2017 by JENNIFER

CHEMISTRY
2 C8H18 + 25 O2 → 16 CO2 + 18 H2O. WHAT IS THE MOLE-TO-MOLE RATIO BETWEEN OXYGEN GAS AND WATER?
Wednesday, February 22, 2017 by JENNIFER

chemistry
Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He.What is the mole fraction of N2 in the mixture?
Wednesday, February 22, 2017 by anonymous

chemistry
Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He. What is the total pressure inside the cylinder?
Wednesday, February 22, 2017 by anonymous

Chemistry
What mass of solute is needed to make the following solutions: 0.238 M FeCl3 solution in 1000. mL of solution.
Wednesday, February 22, 2017 by Emily

Chemistry
calculate the change in ph for 1l of buffer solution containing NH4OH and NH4Cl upon addition of 1) 0.02 moles of HCl 2) 0.02 moles of NaOH I got the initial pH as 9.2504 But now Im stuck cus I dunno what happens when we add HCl and NaOH? Please help! :)
Wednesday, February 22, 2017 by Isura

chemistry
If 14.50mL of 0.25M sodium hydroxide reacts completely with 25.0 mL of hydrochloric acid, what is the concentration of the hydrochloric acid?
Tuesday, February 21, 2017 by mo

Chemistry
A 0.2638 g impure sodium carbonate sample is analyzied by titrating the sodium carbonate with the 0.1288 M hydrochloride solution requiring 38.27 mL. The reaction is CO3^2- + 2H^+ --> H2O + CO2 Calculate the percent sodium carbonate in the sample.
Tuesday, February 21, 2017 by CL

chemistry
calculate the volume of 4.0 M hydrochloric acid needed to make 100.0 mL of 0.10 M hydrochloric acid.
Tuesday, February 21, 2017 by modupe

chemistry
how many moles of water vapour are formed when 10 liters of butane gas C4H10 is burned in oxygen at stp?
Tuesday, February 21, 2017 by nati

Chemistry
Describe how to prepare 10 mL of 0.200 acetate buffer, pH 5.00, starting with pure acetic acid and solutions containg 3 M HCl and 3 M NaOH. Include both quantitate and qualitative details. I know that a strong base reacts completely witha weak acid because the equilibrium ...
Tuesday, February 21, 2017 by Jillian King

Chemistry
Write the formula of the corresponding acid that contains this anion. Express your answer as a chemical formula. The arsenite ion has the formula AsO33−.
Tuesday, February 21, 2017 by Alexandra

chemistry
how many grams of CO2 could be produced from 100.0 grams of CH4? CH4 + 2O2 -> CO2 + 2H2O
Tuesday, February 21, 2017 by Clarissa

chemistry
Confused on how to find the reactants in these two compounds Ba(OH)2 (aq) + I2Zn (aq) -> ?? Additionally, I am not really sure how to find the ionic equation for this.
Tuesday, February 21, 2017 by Anon

Chemistry
A 75.0g sample of liquid contains 17.5% by mass of H3PO4 (molar mass = 98.0g/mol). If 215.0mL of Ba(OH)2 is needed to completely neutralize the acid, determine the concentration of the Ba(OH)2 solution used. WITH FULL EXPLANATION PLEASE!
Tuesday, February 21, 2017 by NSU

Chemistry
A piece of metal ribbon has a mass of 6g.It has a density of 4g/mL. What is the volume of the ribbon?
Tuesday, February 21, 2017 by Candace

chemistry
An environmental chemist needs to determine the amount of Fe+2 ions in a simple of polluted water from a rusting industrial plant. one procedure is to analyses the sample by using solution of sodium dochromate, Na2Cr2O7. identify the oxdising agent and the reducing agent in ...
Tuesday, February 21, 2017 by cletus

chemistry
what volume of chlorine is required to produce 25.4grams of copper II chloride at 18 degrees celsius and 2.13 atm
Tuesday, February 21, 2017 by becky

Chemistry
Using the following data, determine the initial rate by calculating the slope of the tangent line at time zero. Time (s). [I2] (mM) 0. 0 20. 0.009 40. 0.017 60. 0.023 80. 0.029 100. 0.034 120. 0.039 140. 0.043 160. 0.046 180. 0.049 I can't figure out how to make a tangent ...
Tuesday, February 21, 2017 by Lynn

Chemistry
Can someone clarify where I'm going wrong with this? Kw for pure water is 1.2 x 10-15 at 5°C. The pH of pure water at 5°C? I thought Kw=[H3O][OH]... I've tried a few different things, but none seem to work. Thanks!
Tuesday, February 21, 2017 by Jana

Chemistry
N2(g) + 3 H2(g) → 2 NH3(g) [balanced] If 5.42 g of nitrogen gas are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant? Use the molar mass data below if necessary. Molar mass of N2 = 28.02 g/mol Molar mass of H2 = 2.02 g/mol Molar mass of ...
Monday, February 20, 2017 by Jennifer

chemistry
N2(g) + 3 H2(g) → 2 NH3(g) [balanced] If 5.42 g of nitrogen gas are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant? Use the molar mass data below if necessary. Molar mass of N2 = 28.02 g/mol Molar mass of H2 = 2.02 g/mol Molar mass of ...
Monday, February 20, 2017 by Jennifer

Chemistry
A sample of 10.7 g of O2 reacts completely with CO to form CO2. 2 CO + O2 → 2 CO2. How many grams of CO is required.
Monday, February 20, 2017 by Jennifer

Chemistry
If 32.3 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass? 5.94% KCl 8.55% KCl 14.4% KCl 16.8% KCl Can someone explain this to me? I don't want the answer I just want to know how to find it.
Monday, February 20, 2017 by Acasia

Chemistry
How many grams of K2SO3 would be required to react completely with 200.0 mL of 0.245 M HCl
Monday, February 20, 2017 by Lauren

chemistry
. What would be the molarity of the solution produced when 276 mL of 6.00 M NaOH is combined with 125 mL of a 2.00 M NaOH solution?
Monday, February 20, 2017 by jey

Chemistry
You put a rock weighing 45g into a graduated cylinder. Before you put the rock in the graduated cylinder, the volume of water in the cylinder is 10mL. After you put the rock in the graduated cylinder, the volume rises to 25mL. What is the density of this 3rd rock?
Monday, February 20, 2017 by Lysa

Chemistry 101
Fe3+ and CN-
Monday, February 20, 2017 by Siyabonga

chemistry
Create balanced equation, given the two compounds in aqueous solution may react with one another. State whether or not a chemical reaction occurs. Make sure to include the state of each reactant and product. If a precipitation reaction occurs, provide the ionic and net ionic ...
Monday, February 20, 2017 by Aaron

Chemistry
Write the Kc expression for the following reaction: Fe3+ + SCN- = FeSCN2+
Monday, February 20, 2017 by Aiyana M.

Chemistry
Consider compounds trans-4-tert-butylcyclohexanol and 4-tert-butylcyclohexanone below. Using silica gel TLC plates, which of these two compounds will have the higher Rf value when dichloromethane is the developing solvent? Why? Does it possibly have to do with the polarity?
Monday, February 20, 2017 by Lyndsay

college chemistry
Calculate how much carbon you use in a year, by considering how much driving you do a year. If I use 500 gal per year, what is my answer? balanced combustion equation which shows how the main component in gasoline reacts in your car and produces carbon dioxide: 2C8H18(l) + ...
Monday, February 20, 2017 by Alex

Chemistry
A 5.0×101 kg sample of water absorbs 324 kJ of heat. If the water was initially at 22.2 ∘C, what is its final temperature?
Monday, February 20, 2017 by Carlos

Chemistry
3Cu(s) + 8HNO3(aq) → 2NO(g) + 3Cu(NO3)2(aq) + 4H2O(l) If 15 g of copper metal was added to an aqueous solution containing 6.0 moles of HNO3, how many moles of NO(g) would be produced, assuming a 59.8 % yield.
Monday, February 20, 2017 by Raphael

chemistry
empirical formula for K 60.0% C 18.5% N 21.5% and P 7.5% I 92.5%
Monday, February 20, 2017 by Mar

Chemistry
how many chloride ions are in 0.28 mol MgCl2?
Monday, February 20, 2017 by Ness

chemistry
A 8.408 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 12.53 grams of CO2 and 3.849 grams of H2O are produced. In a separate experiment, the molar mass is found to be 118.1 g/mol. Determine the empirical formula and the ...
Sunday, February 19, 2017 by ALAN

Chemistry
Recall the reactions for this lab: S2O82- + 2I- → 2SO42- + I2 (slow) Reaction 1 The one that delays the solution turning blue: I2 + 2S2O32- → 2I- + S4O62- (fast) Reaction 2 b. All the S2O32 is consumed when the color change occurs. Therefore, Δ[S2O32] = c. Use the ...
Sunday, February 19, 2017 by Anonymous

Chemistry
. A student mixed the following reactants, using the general procedure for the experiment: 10.0 mL of 0.10 M KI, 10.0 mL of 0.0010 M Na2S2O3, 20.0 mL of 0.040 M K2S2O8, and 10.0 mL of 0.10M HCl. It took about 75 seconds for the mixture to turn blue. a. By using the dilution ...
Sunday, February 19, 2017 by Anonymous

Chemistry
Recall the reactions for this lab: S2O82- + 2I- → 2SO42- + I2 (slow) Reaction 1 The one that delays the solution turning blue: I2 + 2S2O32- → 2I- + S4O62- (fast) Reaction 2 b. All the S2O32 is consumed when the color change occurs. Therefore, Δ[S2O32] = c. Use the ...
Sunday, February 19, 2017 by Alexander

General Chemistry
A student mixed the following reactants, using the general procedure for the experiment: 10.0 mL of 0.10 M KI, 10.0 mL of 0.0010 M Na2S2O3, 20.0 mL of 0.040 M K2S2O8, and 10.0 mL of 0.10M HCl. It took about 75 seconds for the mixture to turn blue. a. By using the dilution ...
Sunday, February 19, 2017 by Alexander

chemistry
What is the molality of a solution containing 11.1 g Na2SO4 dissolved in 2269.2 g of water? Just making sure would it be 11.1 divided by 2269.2 times 100?
Sunday, February 19, 2017 by Brianna

Chemistry-Urgent
What is the molality of a solution containing 11.1 g Na2SO4 dissolved in 2269.2 g of water?
Sunday, February 19, 2017 by Brianna

Chemistry-Urgent
The partial pressure of CO2 inside a bottle of soft drink is 4.0 atm at 25°C. The solubility of CO2 is 0.12 mol/L. When the bottle is opened, the partial pressure drops to 3.0 ✕ 10-4 atm. What is the solubility of CO2 in the open drink? Express your answer in grams per liter.
Sunday, February 19, 2017 by Brianna

Chemistry
What are the molality and mole fraction of solute in a 30.1 percent by mass aqueous solution of formic acid (HCOOH) can you please explain it better? I still don't quite understand
Sunday, February 19, 2017 by Daryll

Chemistry
What are the molality and mole fraction of solute in a 30.1 percent by mass aqueous solution of formic acid (HCOOH)
Sunday, February 19, 2017 by Daryll

Chemistry
which salt solution would have the highest ph and why KI,KBr,KF,KCL or they all have the same ph. Im leaning towards KF since im pretty sure the other salts are neutral?
Sunday, February 19, 2017 by Sean

Chemistry
What are the molality and mole fraction of solute in a 30.1 percent by mass aqueous solution of formic acid (HCOOH)
Sunday, February 19, 2017 by Daryll

Chemistry
If you have 1911.9 g of a bleach solution. The percent by mass of the solute sodium hypochlorite NaOCl is 3.62. How many grams of NaOCl are in the solution
Sunday, February 19, 2017 by Daryll

CHEMISTRY
You carefully weigh out 20.00 g of CaCO3 powder and add it to 81.00 g of HCl solution. You notice bubbles as a reaction takes place. You then weigh the resulting solution and find that it has a mass of 92.80 g . The relevant equation is CaCO3(s)+2HCl(aq)→H2O(l)+CO2(g)+CaCl2...
Sunday, February 19, 2017 by kaba

Chemistry
What volume of a 4.50 M KI stock solution would you use to make 0.455 L of a 1.25 M KI solution?
Sunday, February 19, 2017 by Daryll

Chemistry
Write the formulas of the compounds formed by NH4+ with the following anions: CN−, HCO3−, SO42−, HPO42−
Sunday, February 19, 2017 by Miranda

Chemistry 121
. Using your calculated value for molar heat of reaction, how much heat would be given off in kilojoules if 3.0 grams of magnesium were to react with excess hydrochloric acid. Show work for your calculation. Value is 31.304 kJ/mol Mg
Sunday, February 19, 2017 by Ty M.

chemistry
Balance the following chemical reaction and determine the number of moles of HI produced when 2.33 moles of H2(g) are consumed in the following chemical reaction: ___H2(g) + __I2(g) -> ___HI (g)
Sunday, February 19, 2017 by anon

chemistry
Hello, I was confused on this chemistry problem and I was wondering if someone could please help me. 1) Consider the following chemical reaction: 2CH3OH(I) + 3O2 (g) → 2CO2(g) + 4H2O(I) Calculate the number of moles of CO2 produced when 11.25 mL of methanol CH3OH(I) reacted ...
Sunday, February 19, 2017 by molly

Chemistry-Urgent
What is the percent by volume of ethanol in a solution that contains 26 mL of ethanol dissolved in 113 mL of water? explain please
Sunday, February 19, 2017 by Brianna

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Homework Help: Science