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August 29, 2015

Search: how many grams of O2 are consumed..

Number of results: 7,301

physics
calculate the energy consumed by a computer(150 W) that is used for 2.0 hours and a laser(250 W) that is used for 10 min? Answer is 1.2 Mj
July 10, 2013 by justin

Science
Ethanol has a density of 0.789 grams per centimeter ubed. How many cubic centimeters of ethanol must be poured into a graduatedcylinder to equal 30.3 grams?
October 4, 2009 by Wanda

Chemistry
Can you determine the mass of carbon monxide that is produced when 45.6 grams of methane reacts with 73.2 grams of oxygen gas. Can you please show work in detail please. Thanks
March 25, 2010 by Stacey

Chemistry
determine the mass of carbon monxide that is produced when 45.6 grams of methane reacts with 73.2 grams of oxygen gas. Can you please show work in detail please. Thanks
March 25, 2010 by Stacey

chemistry
how many grams of AgNO3 would need to be dissolved in 1 liter, 500mL, and 100mL in order to make a 1M solution? need to show work and answers are in grams....????
July 16, 2010 by al

Chemistry
In an experiment, 3.545 grams of an unknown nonelectrolyte is dissolved in 15.0 grams of water. The extrapolated freezing point is -.56 degrees C. What is the molecular weight of the unknown material?
November 22, 2010 by Cerra

chemistry
Rachel adds together 450.9g of a 22.0% solution of potassium carbonate and 275 grams of a 5.57m solution of Barium chlorate. How many grams of precipitate does she produce?
May 22, 2011 by guadalope

Pre Calculus
Exponential growth and decay find the half life of a radioactive substance if 220 grams of the substance decays to 200 grams in 4 years?
October 25, 2011 by Josh

Chemistry
How many grams of NaCl should be added to 1 L of water to make an isotonic solution? (molecular weight of NaCl= 58.5) Can someone please explain to me why the answer is 9 grams.
January 30, 2012 by Jon

Chemistry
Hello everyone I need your help at once. How many grams of CO2 are needed to neutralize a 5 L tank of water with a pH of 11.5? my answer is around 220 grams of CO2. is that true or not?
April 13, 2014 by Ramtin

Chemistry
A butane lighter had a mass of 24.643 grams before lighting and a mass of 24.592 grams after. How many mL of CO2 were produced? Assume STP.
June 9, 2014 by Heidi

Chem Help Please Urgent!!!!!!
What is the boiling point of a solution of 0.515 grams of acenaphthene (C12H10) in 15 grams chloroform (CHCl3) given pure chloroform has a b.p. of 61.7 C and a Kbp of +3.63 C. Thanks!
September 12, 2014 by Kim

chemsistry
If one pound (454g) of hexane combusts with 185 grams of oxygen which reactant is the limiting reactant and how many grams of carbon dioxide are produced? how do I do this? How do I set it up?
March 31, 2015 by sarah

science
what is the karat count of gold in a bracelet that contains 15 grams of gold and 5 grams of silver
May 13, 2008 by demarco

Chemistry
N_2+3H_2-->2NH_3 How many grams of H_2 are needed to react with 3.20 grams of N_2
October 23, 2010 by Doug

chemistry
if you start with ten grams of lithium hydroxidr, how many grams of lithium bromide will be produced
April 3, 2011 by mary

chemistry
How many grams of sodium cyanide would be required to make 55 grams of sodium sulfate?
May 15, 2011 by Sabrina

Chemistry
what is my percent yield if i had 1.46 grams of copper to start with and ended with 2. 47 grams of copper?
June 14, 2011 by megan

Chemistry
If the theoretical yield of a reaction is 18.6 grams & 7.6 grams were collected the.experiment, what is the percent yield
November 5, 2012 by B

Science
How many grams of oxygen gas would be needed to react with 75 grams of hydrogen gas
January 8, 2013 by Tammy

chemistry
how many grams of copper is displaced from copper sulphate solution by adding 27 grams of aluminium
June 27, 2013 by amish

Chemistry
How many grams of NaCl are present in a 300 grams salt solution containing 9% NaCl ?
November 6, 2013 by Angelica

Algebra 1
Please...I really need help with this story problem. HELP! Marks pet needs to eat at least 18 grams of fiber but less than 25 grams of protein each day. Mark gives his dog Food A and Food B throughout the day. Food A has 2 grams of fiber and 3 grams of protein in each serving...
January 15, 2012 by Deb

General Chemistry
how many grams of a protein weighing 4500 grams/ mol must be present in 100 ml of water solution to a given osmotic pressure of 18 mm hg at 25 degrees celcius...( use formula of pie = Mrt
December 11, 2010 by Sarah

Nursing School
how many grams of lithium hydroxide are needed to remove 4500 grams carbon dioxide by a submarine atmospheric regulator and acts according to the following formula? 2LiOh+CO2>Li2CO3+H2O
June 21, 2011 by Kenzie

chemistry
Combustion analysis, Empirical and Molecular formulas, help!? When 2.686 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 9.224 grams of CO2 and 1.511 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to...
September 7, 2011 by Sazon

Chemistry honors
20 grams magnesium metal react with excess oxygen and 28 grams of magnesium oxide are produced in lab what is percent yield? If 99.8 g of aluminum nitrate are reacted with excess sulfuric acid what would be the theoretical yield in grams of aluminum sulfate? i have done both ...
December 4, 2014 by lynn

chem
Forty-two grams of benzoic acid is treated with concentrated nitric acid in some sulfuric acid. Forty-two grams of the major expected organic product is isolated. What is the percentage yield for this experiment? Give an equation with structural formulas for the major reaction...
August 6, 2007 by Damon

Chemistry
2HCl+Na2SO4--->2NaCl+H2O, If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units
August 5, 2010 by Jarred

Chemistry
Suppose you tried to combine 42 grams of magnesium with 45 grams of oxygen. Which of the two substances would be left after the reaction? How much magnesium oxide will be formed?
October 3, 2010 by Chris

chemistry
If 45.3 grams of aluminum react with an excess of oxygen, as shown in the balanced chemical equation below, how many grams of aluminum oxide can be formed? 4Al + 3O2 2Al2O3
October 18, 2011 by Anonymous

chemistry
Calculate the residence time of sodium in millions of years if the total amount of sodium in the oceans is 1.5 x 10 to the 22 grams, and is supplied to the ocean at a rate of 2.2 x 10 to the 14 grams per year.
June 17, 2012 by Dewayne

chemistry
How many grams of phosphoric acid can be made from 200 g of dichromate and 150 grams of hypophosphorous acid? (Performed in an acidic solution, Chromium III is one of the products)
October 10, 2012 by Rae

Chemistry
How to figure out half-lives Half-live of Indium-116 is 14 seconds. How long will it take for 32 grams of this istotopw to decay to 1.0 grams. I know the answer is 70seconds but do not know how to get it!
December 12, 2012 by Anonymous

chemistry
a mixture of 100 grams of water is mixed with 100 grams of sodium nitrate at 30 degrees celcius if filtered how much salt would be left behind
June 1, 2013 by Jesica

chem 1211
P2 +3H2=2ph3 How many grams of ph3 can be formed when 37.5 grams of p2 and 83 L of h2 gas are reacted at 1 atm and 273.25 K? I really need a step by step of this problem. Thanks in advance!
October 21, 2013 by Sara

Chemistry
A compound is known to be a cesium halide, CsX. If 3.00 grams of the salt is dissolved in exactly 100.0 grams of water, the solution freezes at -0.735C. What is the chemical formula for the salt?
February 20, 2014 by Susy, PLEASE HELP

Chem 130
How many grams of magnesium chloride should be produced by the single displacement reaction between 0.578 grams of magnesium metal and an excess hydrochloric acid?
October 29, 2014 by michelle

Chemistry
When 0.340 mol of butane, C4H10, are burned with excess oxygen giving CO2 and H2O, how many moles of oxygen are consumed?
September 9, 2011 by Aha

Chemistry
an empty flask as a mass of 123.4 grams. When the flask is filled with water, the mass is 211.6 grams. If 10.0 grams of zinc (d=7.14 g/cm3) are added to the flask filled with water (and the sides of the flask are dried from the displaced water) what is the new mass of the flask?
August 27, 2015 by Hannah

chem
a test tube containing CaCo3 is heated until all the compound decomposes. If the test tube plus calcium carbonate originally weighed 30.08 grams and the loss of mass during the experiment is 4.40 grams, what was the mass of the empty test tube? Write the equation. CaCO3 ==>...
April 15, 2007 by laura

Chemistry
Heres the question: "In determining the simplest formula of lead sulfide, 2.46 grams of lead are placed in a crucible with 2.00 grams of sulfur. When the reaction is complete, the product has a mass of 3.22 grams. What mass of sulfur should be used to in the simplest forumla ...
July 16, 2008 by Tran

Chem
In an experiment 16.81 +/- 0.02 grams of hydrogen peroxide chemically decomposes into the products water and oxygen gas. The measured mass of oxygen gas produced in the reaction is 8.854 +/- 0.003 grams. Report the mass of water produced to the correct number of significant ...
February 8, 2008 by CHEM HELP!

Chem
In an experiment 16.81 +/- 0.02 grams of hydrogen peroxide chemically decomposes into the products water and oxygen gas. The measured mass of oxygen gas produced in the reaction is 8.854 +/- 0.003 grams. Report the mass of water produced to the correct number of significant ...
February 8, 2008 by Chem Help!!

college chemistry
Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
March 5, 2014 by steven

Chemistry
Which radioactive sample would contain the greatest remaining mass of the radioactive isotope after 10 years? A. 2.0 grams of 198 Au B. 2.0 grams of 42 K C. 4.0 grams of 32 P D. 4.0 grams of 60 Co By the way the numbers next to the elements are their atomic masses. thanks ...
March 3, 2007 by Sanjay

Chemistry
I blanked how to solve this: How many grams of carbon dioxide are produced when 2.5 grams of sodium bicarbonate reacts with excess citric acid according to: 3NaHCO3+H3C6H5O7 -> Na3C6H5O7+3CO2+3H2O Could you include the steps, please? Thanks.
June 15, 2011 by Jillian

Physical Science
Ok, I just want to make sure I am doing this right. It says mass= 3800grams. Silvers density is 10 grams/cm^3. How much will volume of water with silver displace in cm^3? So would it be 3800g/10g= 380 grams? or is that wrong?
September 17, 2014 by Belle

Chemistry
When 0.100 mol of carbon is burned in a close vessel with 8.00g of oxygen, how many grams of carbon dioxide can form? Which reactant is in excess, and how many grams of it remain after the reaction?
September 27, 2009 by Jasmine

Chemistry
When 0.100 mol of carbon is burned in a close vessel with 8.00g of oxygen, how many grams of carbon dioxide can form? Which reactant is in excess, and how many grams of it remain after the reaction?
September 29, 2009 by Jasmine

Chemistry
If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced? Round to the nearest tenth. Don't forget the units.LiOH+HBr--->LiBr+H2O
August 5, 2010 by Jarred

Chemistry
How many grams of BaSO4 can dissolve in 1.5 L of a 0.010 M solution of Na2SO4? Ksp= 1.1 x 10^-10 I thought the answer was 1.1x10^-8 M then multiply by the molar mass to get the amount of grams but my answer isn't correct. PLEASE HELP!
December 4, 2010 by Maddie

chem
What is the percent yield for a reaction when 166.3 grams of W2O3 combines with Carbon Monoxide but only produces 147.8 grams of W? chemical equation is W2O3+3CO------>2W+3CO2
October 26, 2012 by Carina 78

chem 110
when1.015 grams of calcium carbonate is reaced with 20.440 grams of hydrochloric acid the resulting mass is 21.128grams. what mass of gaseous product was released.
December 16, 2013 by chem 110

Chemistry
A strip of zinc medal weighing 2.00 grams is placed in an aqueous solution containing 150.ml of .750M Tin(II) nitrate. Determine the grams of tin metal that will be precipitated.
January 13, 2015 by Jefferson

Chem
When a piece of Copper weighing 250 grams is placed in a cup with 450 ml of water at 21OC and the Cp of the cup is 47 J/K, how many grams of gasoline would it take to heat the system to 110OC?
July 21, 2015 by Jessica

chem
how many grams of hydrogen chloride is needed to produce 200 grams of hydrogen
January 11, 2011 by ashley

chemistry
How many grams of magnesium oxide are produced when 40 grams of oxygen react with magnesium
May 8, 2011 by jordan

Chemistry
How many grams of NH3 can be produced from 3.26 moles of N2? How many grams of H2 are needed to produce 13.99 g of NH3?
November 6, 2011 by Natalie

chemistry
How many grams of magnesium metal are produced by the decomposition of 19 grams of magnesium chloride?
February 6, 2012 by nate

chemistry
How many grams of CuSO4 are there in 219 grams of an aqueous solution that is 20.2% by weight CuSO4
April 13, 2012 by Jeanne

Chemistry
The solubility of AlCl(3) is 46.6 grams in 100 mL in water. How many grams of AlCl(3) will dissolve in 1.68 L?
May 20, 2012 by Sharmin

Chemistry
The solubility of AlCl(3) is 46.6 grams in 100 mL in water. How many grams of AlCl(3) will dissolve in 1.68 L?
May 20, 2012 by Sharmin

chemistry
4 P + 5 O2 ==> P4O10 If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each compound do you have present?
January 30, 2013 by will.i.am

Chemistry
How many grams of calcium carbonate are required to prepare for 50.0 grams of calcium oxide
June 2, 2013 by Diamond

science
how would 10 grams of helium be different that 10 grams of helium in a sealed container.
December 9, 2013 by jaylon

Science
How many grams of sucrose are dissolved in 400 grams of a 12% ogueaus solution of sucrose?
July 7, 2014 by Araceli

chemistry
How many grams of NaOH are there in 187 grams of an aqueous solution that is 7.06 % by weight NaOH.
August 21, 2014 by jb

chemistry
How many grams of NiI2 are there in 263 grams of an aqueous solution that is 33.5 % by weight NiI2.
August 21, 2014 by jb

biology
concentration of methyl mercury in fish and number of meals safely consumed per month which is the dependent and independent does the dependent go on the y or x-axis
September 10, 2013 by loli

,;
Increase the amount and variety of seafood consumed by choosing seafood in place of _____. A. Breads B. Fruits C. Vegetables D. Some meat and poultry
February 8, 2014 by xd

chemistry
If the intial rate of the reaction produces 2 moles of water vapor, H2O, per second, what is the rate at which oxygen, O2, is consumed initially?
February 10, 2015 by Bob

econ
The real exchange rate between Canada and U.S. must be unity if LOOP is found held for all the common goods that are consumed in both countries. True or false?
May 28, 2008 by econ

chemistry
Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
March 5, 2014 by steven

chemistry(DrBob222)
did you read my previous post? I just want to mke sure understand what the answer is I think it's 1.11 No, the answer is 2.22 grams. 1.11 is the number of mols H2 which you calculated correctly. Then you converted 1.11 mols to grams by 1.11 mols H2 x molar mass H2 = 1.11 mols ...
May 15, 2007 by mike

Chemistry/stoichiometry
For the reaction shown, calculate how many moles of NO2 form when each amount of reactant completely reacts. 2N2O5g = 4NO2g+O2g I am assuming that the first question must be converted to grams and the second question must be converted to kilograms I just need to know how to ...
October 26, 2012 by Dale

Math
I need help with this problem. The electricity meter on Donna's house read 71,236.4 kwh at the beginning of March and 73,196.2 kwh at the end of March. She pays 7.4% per kwh. What is the amount of her electricity bill for March? Round to the nearest cent. Do I add the kwh's ...
February 17, 2007 by Merisa Ann--Desperate for help!!

Chemistry
I have a problem that has been driving me crazy trying to solve, and I was wondering if someone could help. The problem is this: "Given the reaction: CuSO4 + 4 NH3 ----> Cu(NH3)4SO4, if 10 grams of CuSO4 reacts with 30 grams of NH3, what is the theoretical yield of Cu(NH3)...
August 23, 2007 by Josh

Chemistry
I was wondering if you could help me with this problem. If the reaction proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.34 kg SO2 reacts with an exfess of CaCO3 and O2? Thanks for your help. Write the equation for the reaction and balance it. CaCO3...
July 9, 2007 by Ally

Chemistry
Calculate the solubility of calcium sulfate in grams solute per 100 grams of solvent. Assume that the volume occupied by the solute in the solution is negligibly small. (Ksp for CaSO4 = 2.4 X 10^-5)
April 25, 2011 by Boo

Science
Ethanol (grain alcohol) has a density of 0.789 grams per centimeter cubed, How many cubic centimeters of ethanol must be poured into a graduated cylinder to equal 30.3 grams?
January 10, 2012 by Cedquandra

Chemistry
1. Nitrogen monoxide is oxidized in air to give brown nitrogen dioxide. Starting with 2.2mol NO, how many moles and how many grams of 02 are required for complete reaction? What mass of NO2,in grams, is produced?
September 10, 2013 by Mitto

Grade 9th
If 6.5g of zinc reacts with 5.0g of HCL,according to the reaction.Zn + 2HCL:zncl2+h2 Which substance is the limiting reaction? How many grams of the reactant remains unreactant? How many grams of hydrogen would be produce?
December 22, 2014 by Ettefa Tirfessa

chemistry
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to yield the ester isopentyl acetate which has the odour of bananas. If the yield from the reaction is 45%, how many grams of isopentyl acetate are formed when 3.90 g of acetic acid and 6.28 grams of isopentyl ...
November 17, 2011 by kim

help! physics
Two masses (m1 = 532 grams, m2 = 114 grams) are connected with a rope through a frictionless pulley The ramp has an elevation angle θ = 65.3 and a coefficient of friction μ = 0.184. What are Fll and Fperpendicular for m1? What is the normal force on m1?
November 30, 2010 by Haley

Chemistry
How would I figure out what is produced during a chemical reaction between 0.5 grams of sodium bicarbonate and 3 grams of citric acid? I know that it produces carbon dioxide and water but my professor said I am missing something from my equation.
June 26, 2012 by Zach

Chemistry
If the percentage of arsenic is 76% and the percentage of oxygen is 24% how do I calculate the chemical composition of the oxide of the arsenic? Thanks Pretend you have 100 grams of the stuff. Then 76 grams of As is how many moles? 76/74.9 =1.01 moles. How many moles is 24 ...
February 25, 2007 by Laura

Biology
Hi, I am studying energy movements in ecosystems. Could you help me with this question: What type of food would be consumed by a secondaryconsumer in the third trophic level of a food chain.
February 5, 2008 by Faye

chemistry
For a particular isomer of C8H18, the following reaction produces 5108.7 kJ of heat per mole of C8H18(g) consumed, under standard conditions.
October 23, 2012 by ;k;k

Chemistry
During a Breathalyzer Test it was determined that 1.60mg of K2Cr2O7 was consumed by the above reaction. Calculate the number of milligrams of ethanol in the test sample.
November 29, 2014 by Jade

Chemistry
I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co? b) how many moles of CO2 can be produced from 15 moles of Fe2O3? c) what is the maximum amount (in grams) ...
April 9, 2008 by Kate

Chemistry
Sulfur dioxide is used to make sulfuric acid. one method of producing it is by roasting mineral sulfides, for example, FeS2(s) + O2 (g) ---> SO2(g) + Fe2O3(s) (unbalanced). A production error leads to the sulfide being placed in a 950-L vessel with insufficient oxygen. ...
October 27, 2011 by Tori

managerial economics
BigBook is a monopolist book publishing company, which sells books in Australia and New Zealand. Assume there is a 1:1 exchange rate between Australia and New Zealand. The inverse demand equations for Australia and New Zealand are as follows: Australia: PA = 100 - 2.5QA New ...
September 7, 2008 by matherik

Chemistry
C2H5NO2 + 2H2O → 2CO2 + NH3 + 3H2 You begin with 1.25 10-2 moles of glycine and an excess amount of water that will allow the reaction to proceed completely to products. This is all in a vessel with a volume of 850 mls at 27C. Assume that the vessel begins with air at...
November 19, 2014 by sarah

Science
1.If the current (in amps) remains the same, but the voltage increases, what effect does this have on the power (in watts) consumed by some device? 2.How is the dimension of time different from the dimensions defining space?
May 11, 2015 by Leo

chemistry
2H2+1O2=2H2O delta H=-136 kJ A) how many joules are released when 35.0 grams H2O form B)how many grams of hydrogen burn when 278 kJ are released. C) Draw a potential energy diagram of this reaction.
May 7, 2012 by Bryan

Chemistry
Complete combustion of propane (C3H8). How many grams of water are produced when 50 grams of propane are reacted with 101 liters of oxygen @STP? Please explain in deminsionsl analysis and how you type it in the calculator. Thanks c:
March 8, 2015 by Kelsey

Stoichiometry
2H2O(l)  O2(g)  2SO2(g) → 2H2SO4(aq) If 50.0 g of sulfur dioxide from pollutants reacts with water and oxygen found in the air, how many grams of sulfuric acid can be produced? How many grams of oxygen are used in the process?
May 4, 2015 by Anonymous

Chemistry II
How many grams of gasoline would you need to burn if you started with a 275 gram piece of ice that started at -25 OC and by the end of the experiment had 100 grams of steam and the rest liquid water?
July 21, 2015 by Cynthia

AP Chemistry
We mix 193 grams of oxygen gas with 39 grams of argon gas in a volume of 1140 mL at 37C. What will be the final pressure of the gas mixture?
October 15, 2013 by Anonymous

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