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August 24, 2016

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

Chemistry
How to I find the spectator ions of BaCl2+K2SO4->2KCl+BaSO4
Monday, November 9, 2015 by Sara

Chemistry
the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My answers: -16.0 kJ and -1....
Monday, November 9, 2015 by Judith

Chemistry
1) A saturated solution of the slightly soluble salt MA3 is 1.4 ×10^–3 M in MA3. What is its Ksp value? 2) A 20.0 mL sample of NaIO3 was treated with an excess of KI and HCl and the iodine produced titrated with 0.05125 M Na2S2O3. 19.35 mL of Na2S2O3 solution were ...
Monday, November 9, 2015 by Brad

Organic Chemistry 2
What is the impurity that must be removed from the benzaldehyde reagent before it can be used in this experiment? this is from are Benzil lab
Monday, November 9, 2015 by John

Organic Chemistry 2
Compare the IR spectrum of benzoin ) with the IR spectrum of benzil . Explain how the changes in the important peaks are related to the differences between the two structures.
Monday, November 9, 2015 by John

Chemistry
Which of the following nitrogen-containing compounds would supply the most nitrogen per gram of fertilizer? a. iron azide, Fe(N3)2, MW = 140 g/mol b. sodium azide, NaN3, MW = 65 g/mol c. potassium nitrite, KNO2, MW = 85.1 g/mol d. potassium azide, KN3, MW = 81.1 g/mol e. There...
Monday, November 9, 2015 by Sarah

Chemistry
The thermal decomposition of carbonates leads to the loss of CO2. The decomposition of an unknown carbonate leads to a 35.1% weight loss. The unknown was which of the following compounds? A. Li2CO3 B. MgCO3 C. CaCO3 D. ZnCO3 E. BaCO3 How do I solve this?
Monday, November 9, 2015 by Anonymous

chemistry
the heat capacity of copper is 0.382J/g degrees celsius. a 22.6g sample of copper at 93 degrees celsius is placed in 50g of water at 23.9 degrees celsius. what is the final temperature of the system?
Monday, November 9, 2015 by zainab

chemistry
a metal sample having a temperature of 100 degrees Celsius and a mass of 45.2g was placed in 50g of water with a temperature of 26 degrees Celsius. at equilibrium, the final temperature was 32.7 degrees Celsius. a)how much heat flowed into the water? b)what is the heat ...
Monday, November 9, 2015 by zainab

chemistry
the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My answers: -16.0 kJ and -1....
Monday, November 9, 2015 by Juidith

chemistry
Styrene is produced by catalytic dehydrogenation of ethyl- benzene at high temperature in the presence of superheated steam. (a) Find ÄH°rxn, ÄG °rxn, and ÄS °rxn, given these data at 298 K: (b) At what temperature is the reaction spontaneous? What ...
Monday, November 9, 2015 by Dalton

chemistry
Enter a chemical equation for the ionization in water of CH3CH2COOH. Is the acid strong or weak? Select the Lewis structure for the ion formed by the acid when it ionizes. Chemical equation: Note: Include physical states.
Monday, November 9, 2015 by y

Chemistry
the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My answers: -16.0 kJ and -1....
Monday, November 9, 2015 by Judith

Chemistry
Magnesia (MgO(s)) is used for fire brick, crucibles and furnace linings because of its high melting point. It is produced by decomposing magnesite (MgCO3(s)) into at around 1200oC Write a balanced equation for the magensite decomposition being sure to include states for the ...
Monday, November 9, 2015 by Kyson

Organic Chemistry
How am I supposed to do these questions? I'm completely lost. A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of 0.12° in a 1-dm sample container. The molar mass of the compound is 130.0 g/mol. (b) What is the observed rotation...
Sunday, November 8, 2015 by Jeff

Organic Chemistry
What observed rotation is expected when a 1.44 M solution of (R)-2-butanol is mixed with an equal volume of a 0.720 M solution of racemic 2-butanol, and the resulting solution is analyzed in a sample container that is 1 dm long? The specific rotation of (R)-2-butanol is –...
Sunday, November 8, 2015 by Mary

chemistry
Assume that 268mL of 5.00M NaOH are diluted to a final volume of 574mL with water. What is the final molarity of NaOH (FM=40.0).
Sunday, November 8, 2015 by Morgan

Chemistry (Check)
Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...
Sunday, November 8, 2015 by Anonymous

Chemistry (Check)
Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...
Sunday, November 8, 2015 by Anonymous

chemistry
Calculate ΔGo (in J) for 2 moles of electron(s) in each half-reaction and a standard potential of 0.44 V
Sunday, November 8, 2015 by moe

Chemistry
The thermal decomposition of carbonates leads to the loss of CO2. The decomposition of an unknown carbonate leads to a 35.1% weight loss. The unknown was which of the following compounds. A. Li2CO3 B. MgCO3 C. CaCO3 D. ZnCO3 E. BaCO3
Sunday, November 8, 2015 by Anonymous

chemistry
the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My answers: -16.0 kJ and -1....
Sunday, November 8, 2015 by Judith

Chemistry
Calculate the molarity of a solution prepared by dissolving 10.0 grams of NaOH and then diluting the solution to 500mL.
Sunday, November 8, 2015 by Anonymous

chemistry
Suppose that 2.69 mol of hydrogen gas occupies a 64.6 L steel tank. At what temperature in °C will the pressure in the tank be 1,383 torr?
Sunday, November 8, 2015 by heri

chemistry
a solution is known to contain Cl, NO3, NO2, and SO4 ions. which of these ions can be positively identified?
Sunday, November 8, 2015 by Frank

chemistry
why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid soulution?
Sunday, November 8, 2015 by Frank

Chemistry
For each of the following experimental conditions determine whether molar mass would be: 1) too high, B) too low or C) unaffected. In each case, /explain/ how this result occurs a) after removing the flask from the water bath, the experimenter cools the flask to room ...
Sunday, November 8, 2015 by S

Chemistry
How would you balance this equation?? Ba(NO3)2 + NH2SO3H + H2O -> Ba(NH2SO3)2 + HNO3 Would you have to make the H2O 0, ultimately removing H2O from the equation (is that even allowed?), or is there another way of balancing it??
Sunday, November 8, 2015 by Georgia

Chemistry
It is common in this experiment for students to calculate percent yields for the reaction that are above 100%. Is this result a violation of the law of conservation of matter? I need help writing an essay based on this prompt.
Sunday, November 8, 2015 by Eduardo

Chemistry
How many moles of phosphorus atoms are in 100 grams of P4S10?
Sunday, November 8, 2015 by Anonymous

Chemistry
How many atoms of carbon are present in 49 g of a compound that is 54 . 1% carbon, by weight?
Sunday, November 8, 2015 by Ashley

Chemistry
Which of the following nitrogen-containing compounds would supply the most nitrogen per gram of fertilizer? a. iron azide, Fe(N3)2, MW = 140 g/mol b. sodium azide, NaN3, MW = 65 g/mol c. potassium nitrite, KNO2, MW = 85.1 g/mol d. potassium azide, KN3, MW = 81.1 g/mol e. There...
Sunday, November 8, 2015 by Anonymous

chemistry
How much pure calcium carbonate (100.09 g/mol) is required to produce 40.0 mL carbon dioxide gas according to the reaction used in this experiment? Your unknown will contain between 25-100% calcium carbonate. Answer to 3 significant figures. Do not include the unit, g. Hint...
Sunday, November 8, 2015 by chem

Chemistry
Arrange the following in order of increasing mass: 1. one F atom 2. 1x10^-20 mol of F 3. 1x10^-20g of F 4. one F2 molecule A. 1<2<3<4 B. 1<4<3<2 C. 3<1<2<4 D. 2<1<3<4 E. none of these I'm thinking C
Sunday, November 8, 2015 by Anonymous

Chemistry
You synthesized copper (I) chloride and copper (I) oxide. How do they differ from their copper (II) analogs? comment on the stability of these moist solids in air. If unstable, what is the likely product of decomposition? -I'm not really sure where to go with this one, ...
Sunday, November 8, 2015 by Dan

Organic Chemistry 2
What is the impurity that must be removed from the benzaldehyde reagent before it can be used in this experiment? this is from are Benzil lab in this lab, benzoin condensation of benzaldehyde will be carried out with a biological coenzyme, thiamine hydrochloride, as the ...
Sunday, November 8, 2015 by John

Organic Chemistry 2
What is the purpose of adding NaOH ot the reaction? This is the from our Benzil Lab.
Sunday, November 8, 2015 by John

Organic Chemistry 2
Compare the IR spectrum of benzoin ) with the IR spectrum of benzil . Explain how the changes in the important peaks are related to the differences between the two structures.
Sunday, November 8, 2015 by John

Chemistry
Enthalpy I'm given that the heat of reaction for the combustion of ethane is -1560kJ/mol. I need to figure out how much heat is produced from 18g of ethane. 2 C2H6 + 7 O2 --> 4 CO2 + 6 H2O Okay so I'm rough on Thermo right now, so I gave it my best shot. Could we ...
Sunday, November 8, 2015 by Justin

Chemistry
Enthalpy I'm given that the heat of reaction for the combustion of ethane is -1560kJ/mol. I need to figure out how much heat is produced from 18g of ethane. 2 C2H6 + 7 O2 --> 4 CO2 + 6 H2O Okay so I'm rough on Thermo right now, so I gave it my best shot. Could we ...
Sunday, November 8, 2015 by Justin

Chemistry
Enthalpy I'm given that the heat of reaction for the combustion of ethane is -1560kJ/mol. I need to figure out how much heat is produced from 18g of ethane. 2 C2H6 + 7 O2 --> 4 CO2 + 6 H2O Okay so I'm rough on Thermo right now, so I gave it my best shot. Could we ...
Sunday, November 8, 2015 by Justin

Chemistry
For each of the following experimental conditions determine whether molar mass would be: 1) too high, B) too low or C) unaffected. In each case, /explain/ how this result occurs a) after removing the flask from the water bath, the experimenter cools the flask to room ...
Sunday, November 8, 2015 by S

Chemistry (Ksp and Solubility)
Kindly answer my query as early as possible.Please solve the complete question A solution contains 0.01M Ag+ and 0.001M Ba+2 . ksp of Ag2CrO4 = 2.4*10e-12 ksp of BaCrO4 = 1.17*10e-10 A solution of K2CrO4 is added to this solution. Which will precipitate first,Silver chromate ...
Sunday, November 8, 2015 by Bilal Asif

Chemistry
How do I calculate the percent yeild of copper give the mass and concentration of Cu(NO3)2 and the final mass of copper
Sunday, November 8, 2015 by Dan

Chemistry
Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. How many grams of magnesium would we have to start with to prepare 15.0 ...
Sunday, November 8, 2015 by Anonymous

Chemistry
Nitrogen can also be produced from sodium metal and potassium nitrate by the reaction: Na(s) +KNO3 (s) --> K2O(s) +Na2O(s) + N2(g) If we generate oxygen by the thermal decomposition of potassium chlorate: 2KClO3(s) --> 2KCl(s) +3O2(g) How many grams of potassium nitrate ...
Sunday, November 8, 2015 by Ka_Chin

Chemistry
the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My answers: -16.0 kJ and -1....
Sunday, November 8, 2015 by Judith

Chemistry
Magnesia (MgO(s)) is used for fire brick, crucibles and furnace linings because of its high melting point. It is produced by decomposing magnesite (MgCO3(s)) into at around 1200oC Write a balanced equation for the magensite decomposition being sure to include states for the ...
Sunday, November 8, 2015 by Kyson

chemistry
Styrene is produced by catalytic dehydrogenation of ethyl- benzene at high temperature in the presence of superheated steam. (a) Find ÄH°rxn, ÄG °rxn, and ÄS °rxn, given these data at 298 K: (b) At what temperature is the reaction spontaneous? What ...
Sunday, November 8, 2015 by Dalton

Chemistry
For each of the following experimental conditions determine whether molar mass would be: 1) too high, B) too low or C) unaffected. In each case, /explain/ how this result occurs a) after removing the flask from the water bath, the experimenter cools the flask to room ...
Sunday, November 8, 2015 by S

Chemistry
is it easy to distinguish between between the different oxidation states of copper? why? -I answered yes because copper (I) is not as stable as copper (II), and there is a noticeable colour difference You synthesized copper (I) chloride and copper (I) oxide. How do they differ...
Sunday, November 8, 2015 by Dan

Chemistry
In a copper cycle lab if I add HCl to CuO to produce CuCl, what would a word equation for that reaction be? Is it a chemical reaction? and also for that step what complexes are observed? what does that mean?
Sunday, November 8, 2015 by Dan

Chemistry
For each of the following experimental conditions determine whether molar mass would be: 1) too high, B) too low or C) unaffected. In each case, /explain/ how this result occurs a) after removing the flask from the water bath, the experimenter cools the flask to room ...
Sunday, November 8, 2015 by S

chemistry
calculate the mass in grammes of copper that will be deposited by dissolving 6.5g of zinc in copper tetraoxosulphate(vi) solution
Sunday, November 8, 2015 by jer

Chemistry
I recently calculated for concentration needed to my solution to get -1.5MPa PEG 6000 and I got 0.05g PEG/g H2O but I don't know how to convert this to moles/ L which is more familiar to me and more easier for preparing solutions. Please help.Thank you very much.
Sunday, November 8, 2015 by KIM:Please help me!

Grade 12 Chemistry
5.85gof Naclis Dissolvedin250mlofsolution.Calculatethem​ass%ofsolute?
Sunday, November 8, 2015 by Minibel

Chemistry
1. is it easy to distinguish between between the different oxidation states of copper? why? 2. You synthesized copper (I) chloride and copper (I) oxide. How do they differ from their copper (II) analogs? comment on the stability of these moist solids in air. If unstable, what ...
Sunday, November 8, 2015 by Dan

Chemistry
In a copper cycle lab if I add HCl to CuO to produce CuCl, what would a word equation for that reaction be? Is it a chemical reaction? and also for that step what complexes are observed? what does that mean?
Sunday, November 8, 2015 by Dan

Chemistry
Calculate the number of ion 16g H2CO3
Sunday, November 8, 2015 by Jia

chemistry
name three characteristics of nonmetals
Saturday, November 7, 2015 by tanya

Chemistry
An electron of a hydrogen atom falling from n=3 in the excited state to back to ground state gives off about 12eV. what form the "light" will it give off?
Saturday, November 7, 2015 by Giselle

Organic Chemistry 2
Compare the IR spectrum of benzoin ) with the IR spectrum of benzil . Explain how the changes in the important peaks are related to the differences between the two structures.
Saturday, November 7, 2015 by John

chemistry
what can be separated into atoms with a chemical reaction.
Saturday, November 7, 2015 by hope

Organic Chemistry 2
What is the purpose of adding NaOH ot the reaction? This is the from our Benzil Lab.
Saturday, November 7, 2015 by John

Organic Chemistry 2
What is the impurity that must be removed from the benzaldehyde reagent before it can be used in this experiment? this is from are Benzil lab
Saturday, November 7, 2015 by John

Organic Chemistry
Identify the following compound from its IR and proton NMR spectra. C5H6O: IR: 3300 (sharp), 2102, 1634 cm–1 NMR: δ 3.10 (1H, d, J = 2 Hz); δ 3.79 (3H, s); δ 4.52 (1H, doublet of doublets, J = 6 Hz and 2 Hz); δ 6.38 (1H, d, J = 6 Hz)
Saturday, November 7, 2015 by Anonymous

Chemistry
In the process of respiration, glucose is oxidized completely. In fermentation, O2 is absent, and glucose is broken down into Co2 and H2o. Calculate delta g for respiration of 1.00 g of glucose Calculate delta g for fermentation of 1.00 g of glucose. My answers: -16.0 kJ and -...
Saturday, November 7, 2015 by Judith

Chemistry
Styrene is produced by catalytic dehydrogenation of ethyl- benzene at high temperature in the presence of superheated steam. (a) Find ÄH°rxn, ÄG °rxn, and ÄS °rxn, given these data at 298 K: (b) At what temperature is the reaction spontaneous? What ...
Saturday, November 7, 2015 by Dalton

Chemistry
how much limestone would be required to change the ph value from 4 to 4.5 in 20000 cubic of water?
Saturday, November 7, 2015 by Jerry

chemistry
Magnesia (MgO(s)) is used for fire brick, crucibles and furnace linings because of its high melting point. It is produced by decomposing magnesite (MgCO3(s)) into at around 1200oC Write a balanced equation for the magensite decomposition being sure to include states for the ...
Saturday, November 7, 2015 by Kyson

Chemistry- Dr. Bob
Question 1 Calculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 x 1014 Hz. A) 704 nm B) 158 nm C) 466 nm D) 633 nm E) 142 nm My answer: D.633 nm Question 2 How many photons are contained in a burst of yellow light (589 nm) from a ...
Saturday, November 7, 2015 by Anonymous

Chemistry- Dr. Bob
An electron in the n=7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 2166 nm. What is the value of n for the level to which the electron relaxed?
Saturday, November 7, 2015 by Anonymous

St Ann's College (DDL) Enugu
In A Class Of 60 Students, 30 Offer Physcis And 40 Offer Chemistry, (a)Use Venn Diagram To Represent This Information (b) How Many Students Offer Both Subject
Saturday, November 7, 2015 by Ikechukwu

chemistry
Given two liters of 0.496M KCl describe how you would use this solution to prepare 250.0 ml of 0.175M KCl.
Saturday, November 7, 2015 by julie

science-chemistry
The free energy generated by ion movement in the cell is used by the cell to do work. Compute the minimum number of millimoles of sodium that would be needed to pump one millimole of calcium ions if the following concentrations were present in the cell. Assume the temperature ...
Saturday, November 7, 2015 by rashi

science-chemistry
The Ksp of mercury(II) hydroxide, Hg(OH)2, is 3.60 × 10-26. Calculate the solubility of this compound in g/L. Gf of H2CO3 = -616.1 KJ/mol Gf of H20 = -237.1 KJ/mol Gf of CO2 = - 394.4 KJ/mol 3.
Saturday, November 7, 2015 by rashi

chemistry
Calculate K at 298 K for the following reactions. NO(g) + 1/2 O2(g)......> NO2(g) Nog 86.60 No2 g 51 o2.... O I got 6.81 x 10^-7........thank you.
Saturday, November 7, 2015 by Patrick

chemistry
Calculate K at 298 K for the following reactions. NO(g) + 1/2 O2(g)......> NO2(g) Nog 86.60 No2 g 51 o2.... O I got 6.81 x 10^-7........thank you.
Saturday, November 7, 2015 by Patrick

chemistry
Calculate K at 298 K for the following reactions. NO(g) + 1/2 O2(g)......> NO2(g) Nog 86.60 No2 g 51 o2.... O I got 6.81 x 10^-7........thank you.
Saturday, November 7, 2015 by Patrick

Chemistry
What is the molarity of a solution prepared by placing 7.2 g of glucose in a volumetric flask and adding water to get 250.0 mL of solution?
Friday, November 6, 2015 by Sara

soil chemistry
Can someone please help me answering this question regarding soil chemistry? A sandy soil has a CEC = 5 meq/100g and a K saturation = 6%. An alfalfa crop yields 5 ton/ac/yr at 3% K. Calculate initial exchangeable K and estimate final exchangeable K. Where did the additional K ...
Friday, November 6, 2015 by Anonymous

Chemistry
a diver swimming at a depth of 10m under the water observes that the size of his air bubbles increase in volume as they rise to the waters surface. which gas law does this relate to?
Friday, November 6, 2015 by sheryl

Chemistry
Calculate how much charcoal(carbon) is needed to reduce 40kg of Fe2O3
Friday, November 6, 2015 by Munira

Chemistry
which of the following categories includes two-thirds of all elements? a.Metalloids b.metals c.liquids d.nonmetals C. I know metals take up 3/4 of it? I'm unsure
Friday, November 6, 2015 by Deb

Chemistry
4.80 L of N2, at 25 ∘C and 1.22 atm , is mixed with 1.80 L of O2, at 25 ∘C and 0.122 atm , and the mixture allowed to react. N2(g)+O2(g)→2NO(g) How much NO, in grams, is produced?
Friday, November 6, 2015 by Ethan

Chemistry
A 8.25-L container holds a mixture of two gases at 39 °C. The partial pressures of gas A and gas B, respectively, are 0.186 atm and 0.884 atm. If 0.120 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?
Friday, November 6, 2015 by Amber

chemistry
the volume of a gas measured at 27 c and 101.3 kpa is 20.0 dm3 what final temperature would be required to increase the volume too 40.0 at 101 kpa
Friday, November 6, 2015 by ibrahim

CHEMISTRY
Oxygen gas can be generated by heating KClO3 in the presence of some MnO2. 2KClO3 → 2KCl + 3O2 If all the KClO3 in a mixture containing 1.64 g KClO3 and 0.20 g MnO2 is decomposed, how many liters of O2 gas will be generated at T = 23.0°C and P = 767.9 torr?
Friday, November 6, 2015 by Anonymous

Chemistry
Calculate the grams of a product that is produced when there is 23 gms of each product Al2O3
Friday, November 6, 2015 by Jane

chemistry
The value of Change in heat for the reaction below is -790 KJ. Calculate the enthalpy change accompanying the reaction of .95 g of S. 2S(s) + 3 O2 --> 2 SO3(g)
Friday, November 6, 2015 by Anonymous

Chemistry URGENT PLEASE PLEASE PLEASE HELP!
Determine whether the solution is basic, acidic, or neutral. Write net ionic equations to show how it behaves in aqueous solutions. 1) Fe2(SO4)3 I know it is acidic Do I do hydrolysis equations for the net ionic or do I do redox reactions?
Thursday, November 5, 2015 by Anonymous

Chemistry
If I add 2ml of .1M of NaOH to a buffer system containing sodium acetate and acetic acid, what will happen to the acetate concentration? Will it increase or decrease?
Thursday, November 5, 2015 by Anonymous

Chemistry
How many grams of ethanol, C2H5OH, can be boiled with 343.0 kJ of heat energy? The molar heat of vaporization of ethanol is 38.6 kJ/mol I'm not sure how I am supposed to set this problem up. Can someone help me, please?
Thursday, November 5, 2015 by Chris

chemistry
Precipitation of Ni2+ from a 25 mL aliquot of a solution of unknown concentration yielded 0.338 g of Ni(DMGH)2. Calculate the concentration of the Ni2+ solution
Thursday, November 5, 2015 by Anonymous

f.s.t.c y
(chemistry) 23g of ethanol was mixed with 72g of water in a reaction vessel.calculate the mole fraction and mole percent of water.calculate the mole fraction and mole percent of ethanol
Thursday, November 5, 2015 by shazali

chemistry
3NO2(g) + H2O(l) → 2HNO3(l) + NO(g) How many moles of the excess reactant remain if 2.00 moles of H2O(l) and 5.00 moles of NO2(g) are used? Question 30 options: 1.67 mol H2O(l) 3.00 mol NO2(g) 4.00 mol NO2(g) 1.00 mol NO2(g) 0.33 mol H2O(l)
Thursday, November 5, 2015 by beverly

chemistry
How many moles of carbon monoxide gas are produced from the reaction of 5.00 moles of SnO2(s) with 9.00 moles of carbon according to the equation below? SnO2(s) + 2C(s) → Sn(s) + 2CO(g) Question 28 options: 4.50 mol 9.00 mol 18.0 mol 5.00 mol 7.50 mol
Thursday, November 5, 2015 by beverly

chemistry
How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and 2.00 moles of water? Question 29 options: 4.00 mol 1.67 mol 7.50 mol 3.33 mol 10.0 mol
Thursday, November 5, 2015 by beverly

chemistry
How many moles of carbon monoxide gas are produced from the reaction of 5.00 moles of SnO2(s) with 9.00 moles of carbon according to the equation below? SnO2(s) + 2C(s) → Sn(s) + 2CO(g) Question 28 options: 4.50 mol 9.00 mol 18.0 mol 5.00 mol 7.50 mol
Thursday, November 5, 2015 by beverly

chemistry
5NaN3(s) + NaNO3(aq) → 3Na2O(s) + 8N2(g) If 1.50 g of N2(g) are produced, how many grams of Na2O(s) are also produced? Question 26 options: 8.85 g 3.32 g 2.05 g 2.22 g 1.24 g
Thursday, November 5, 2015 by beverly

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