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December 19, 2014

Search: how many grams of O2 are consumed..

Number of results: 6,835

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

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

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

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

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

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

algebra
Julie has 250 grams of a radioactive substance. The substance decays every hour. How long will it take until she has 20 grams of the substance left?
September 9, 2013 by Sozy

chemistry
The molar mass of sucrose, or table sugar, is 342 grams. Calculate how many grams of sucrose are required to make 3.0 liters of 0.50M sucrose solution.
December 2, 2008 by Bubba

Chemistry
A solution is prepared by dissolving 130 g of NaNO3 in 100 g of water at 80C. The solution is cooled to 0C. How many grams of compound remain in solution? How many grams of solid are formed?
April 3, 2011 by George

Chemistry
A solution is prepared by dissolving 130 g of NaNO3 in 100 g of water at 80C. The solution is cooled to 0C. How many grams of compound remain in solution? How may grams of solid are formed?
April 3, 2011 by Craig

chemistry
Zinc reacts with hydrochloric acid according to the following equation: Zn + 2HCl --> ZnCl2 + H2 If 3.63 grams of zinc react, how many grams of zinc chloride is produced?
May 22, 2012 by beryl

chemistry
0.2 Grams of HCL is dissolved in 0.8g of water. The density of the solution formed is 1.10g/ml. What is the molarity of the solution???? %HCl = [0.2/0.2+0.8)]x100 = 20% Density = 1.10 g/mL. The mass of 1,000 mL is 1.10 g/mL x 1,000 mL = 1100 grams. Mass HCl in the 1100 g is ...
February 5, 2007 by boo

Chemistry
At 25 degrees celsius,one cm3 of iron mass of 7.62 grams. What volume of iron is occupied by 125 grams of iron
July 21, 2011 by Pearl

Chemistry
You have 11.20 grams of compound. It is known that the compound has a half-life of 3.8 days. HOw long will it take for the compound to decay to 0.350 grams?
December 2, 2011 by Missy

chemistry
You have 11.20 grams of a compound. It is known that the compound has a half-life of 3.8 days. How long will it take for the compound to decay to 0.350 grams?
December 5, 2011 by Anonymous

chemistry
Explain in word how you would prepae 250mL of a 3.000 M solution of Ba(OH)2 starting form barium hydroxide and water..... 2 equation 2CoI3 + 3 K2S= Co2S3 + 6KI 2 moles of Cobalt (III) iodide + 3 moles of Potassium sulfide = cobalt (III) sulfide + 6moles of Potassium Iodide ...
October 10, 2010 by pete

chemistry
when 10.0 grams of an unknown substance is dissolved in 50. grams of water, the new freezing point becomes -3.00C. What is the molar mass of the compound? For this question can some one tell me the formulas I need to solve for this problem and I can fill in the rest
March 7, 2010 by Ronnie

CHEMISTRY
if insulin has 6 cysteines, how many millimoles of IAA would be consumed in a blocking reaction containing 10 mmol of reduced insulin? mass of cysteine - 121 g/mol.
January 30, 2008 by emi

Microeconomics
Assume that the marginal utilities for the first three units of a good consumed are 200, 150, and 125 respectively. What is the total utility for the first unit?
July 27, 2012 by Preston

Chemistry
The nuclide 96Nb decays by a first-order process with a rate constant of 2.96 10-2 h-1. How long will it take for 85% of the initial amount of 96Nb to be consumed? I believe it is 5.07 hrs...
January 21, 2013 by Jeremy

Math
Susan owns a chocolate store. She sells her chocolate by the gram and needs to compare the weights of two chocolate batches. She randomly selects 100 pieces from each batch. The distrubition of both samples are normal. Batch 1 - (Mean Weight) 56 grams Standard Deviation - 6 ...
March 30, 2013 by Caroline

9th grade
A student put 12.4 grams of potassium sulfate in 29 ml and stirred for 3 hrs. he saw that not all of the solid dissolved, so he removed the extra solid and found it had a mass of 3.4 grams. what was the solubility of the chemical?
February 21, 2010 by Anonymous

college Chemistry
After subtracting the weight of the container, the Vanadium metal inside is found to weigh 8.34 grams. After reacting with Oxygen the newly formed compound weighs 21.43 grams. What is the empirical formula?
December 4, 2010 by Ivy

chemistry
How many grams of gasoline would you need to burn if you started with 275 gram piece of ice that started at -25C and by the end of the expirement had 100 grams of steam and the rest liquid water?
February 16, 2011 by reginajones

science
if 8.100 grams of C6H6 is burned and heat is produced from the burning is added to 5691 grams of water at 21 degrees celsius what is the final temp of the water? 2C6H6+15O2=12CO2+6H2O+6524kj
October 17, 2013 by lucy

CHEMISTRY
WHEN 92.50 MOL HYDROGEN REACTS, WHAT QUANTIY (MOL) OF NITROGEN IS CONSUMED AND WHAT QUANTITY (MOL) OF AMMONIA IS PRODUCED?
September 26, 2011 by TROUBLED

chemistry
If 23.5 grams of iron chloride are produced how many grams of iron did you start with?
March 15, 2010 by Son

chemistry
how many grams of H2O will be produced if 32.0 grams N2O are produced in the reaction ?
June 28, 2012 by morgan

Chemistry
I need the equation for determining how to decide : You are given a dosage of 30m/kg to be given every twelve hours, how much is given (in grams) with each dose. I know the answer is obviously 15 m/kg but what is it in grams?
January 20, 2012 by Sara

ap chemistry
We mix 146 grams of oxygen gas with 117 grams of argon gas in a volume of 436 mL at 58C. What will be the final pressure of the gas mixture? Answer in units of atm
February 9, 2013 by cheri

General Chemistry
We mix 112 grams of oxygen gas with 118 grams of argon gas in a volume of 1752 mL at 74 degrees celsius. What will be the final pressure of the gas mixture? First, I converted the grams into moles. 112g O2 * (1mol O2/ 32g O2) = 3.5 moles O2 118g Ar * (1mol Ar/ 40g Ar) = 2.95 ...
October 26, 2014 by Sabrina

chemistry
Which liquid will float on water? Liquid A 25 mL weighs 22.3 grams. Liquid B- 30 mL weighs 33.3 grams Liquid C- 10 mL weighs 10.001 grams.
June 25, 2011 by Anonymous

algebra
Can someone please explain and help me with this problem. 4. The table shows the annual consumption of cheese per person in the United States for selected years in the 20th century. Year Pounds Consumed 1908 5.027 1923 8.768 1960 12.29 1981 15.485 What cubic model best fits ...
November 14, 2012 by lee

Chemistry
How many grams of BaCO3 will dissolve in 3.0 L of water containing a Ba+2 concentration of 0.5 M (Ksp= 5.1E-9) My work: BaCO3 <-> Ba+ + CO3- i 0.5 M c -s +s +s e 0.5 +s +s (s)(0.5+s)= 5.1E-9 s= 1.0E-9mol/L x 3.0 L x 197.336 g/L= 5.92E-6 grams of BaCO3 dissolved ^Is this ...
May 14, 2011 by Kelly

chemistry
From the following combustion: 1-butanol + oxygen+ carbon dioxide + water. How many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completely burned? I wrote out the equation and got C4H10) + 02= CO2 + H2O. i balanced the equation and got ...
November 29, 2009 by Turtle Lover

earth science
what would be the chart to use for carbon 14 whcih has a half life of 5730 years and a piece of wood which originally has 12 grams pf radioactive isotope; If the half lives occurred and now has 0.75 grams left?
November 29, 2012 by lan

Chemistry
In determing the simplest formula of lead sulfide, 2.46 grams of 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 in the simplest formula calculation? Find the ...
October 17, 2012 by Sharita

Chemistry
In determing the simplest formula of lead sulfide, 2.46 grams of 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 in the simplest formula calculation? Find the ...
February 24, 2013 by Sarah

Pre-Calc
Amount after time t A (t) = yobt Where: yo = starting amount b = growth constant (percent remaining) t = number of time units It is well known that superman can withstand as much as 3 grams of Green Kryptonite indefinitely. However, exposure to more than 3 grams for more than ...
December 2, 2010 by Ann

biology
for a lab it says prepare a 300 ml of .2% sodium bicarbonate solution. I am trying to find how many grams of NaHCO3 i need. so i did 300ml X .002 and got .6ml of NaHCO3. but how do I convert that to grams of NaHCO3
March 2, 2013 by Sarah

Chemistry 130
Will someone help me by letting me know if I did these correct, or if there the correct answers? Thanks! 2 (10). If two moles of hydrogen gas (H2) react in the following equation, how many moles of H2O will be formed? 2H2 + O2 2H2O a. 2 moles b. 4 moles c. 1 mole d. 8 moles...
September 8, 2009 by Jessie

bio stats
After a winter ice storm, 25 parrots are found sheltering in a tool shed. Ana traps the parrots, weighs them (average weight = 36 grams) and then feeds them. The next morning she find that 6 of the parrots have died. She weighs the dead ones (average weight = 20 grams) and the...
April 26, 2009 by Frank Minimi

Chemistry
You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical has a mass of 850 grams. The total mass of the setup is 1050 grams. The chemical is ignited by means of a magnifying glass focusing sunlight onto the...
January 23, 2012 by Staci

chemistry
You have a chemical sealed in a glass container filled with air. The glass container has a mass of 200.0 grams and the chemical has a mass of 800 grams. The total mass of the set-up is 1000 grams. The chemical is ignited by means of a magnifying glass focusing sunlight onto ...
August 1, 2013 by Kris

chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have possibly been made
February 21, 2010 by david

chemistry
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs. I get 4.8 * 10^2 grams and its not right. I want to put this up here again to see if there are any errors that could have possibly been made
February 21, 2010 by david

Chemistry
if 225 mLs of .50 molars of hydrofloric (HF) acid solution is reacted with 25.5 grams of solid zinc what is the most (in grams) aqueous zinc flouride that would be produced? Based on this, how much nonlimiting ractants will be left over?
March 14, 2011 by Nicole

Chemistry
Ammonia, NH3, and oxygen can be reacted together in the presence of a catalyst to form only nitrogen(II) oxide and water. The number of moles of oxygen consumed for each mole of NO that is produced is?
May 12, 2010 by Chris

chemistry
5. How many moles of magnesium were consumed in the reaction? Open the Data window and click on the flask to provide evidence that this answer is correct. 6. Could this experiment be performed in the smaller 50 mL Erlenmeyer flask?
March 17, 2012 by Dee

Physics(Please help, thank you)
Using a force table the direction and magnitude had to be found for the following measurements: F1 = 200 grams at 30 degrees; F2 = 200 grams at 120 degrees The magnitude and direction found was 280 grams at 257 degrees. Using the magnitude and direction of F1 and F2 I need to ...
September 24, 2012 by Hannah

Mass-mass
How many grams of hydrogen gas are produced when 50.0 grams of zinc react with phosphoric acid, H3PO4 ? Equation:3 Zn +2 H3PO4--->3 H2+ Zn3(PO4)2
March 30, 2009 by robb

physical science
If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years?
September 17, 2009 by Clarissa

physical science
If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years?
September 17, 2009 by Clarissa

chemistry please help!!
for thr reation: 2AlCl3 + 3H2SO4= Al2(SO4)3 + 6 HCl How many grams of H2SO4 are needed to produce 27.0 grams of Al2(SO4)3
November 14, 2010 by Lillian

high school chem
How many grams of a stock solution that is 92.5 percent h2s04 by mass would be needed to make 250 grams of a 35% by mass solution?
March 9, 2011 by Kayla

chemistry
When 5 grams of salt is dissolved in 95 grams of water the temperature of the solution increases 10C how much heat is evolved the heat capacity of the solution is 1.1 cal/gC
October 7, 2013 by Cheryl

math
Eric has a two rocks samples. One has a mass of 600 grams and the other has a mass of 1 kilogram. He recorded the total mass as 7 kilogrmaas. Explain what he did wrong? What should be the correct answer in grams?
March 25, 2014 by Math

Chemistry conversions check
I'm sooooooo not sure if I'm doing this right, but can someone check it please? Thanks :)) 5) Determine the mass in grams of 3.01 x 10^23 atoms of Cl (element) I got 17.5 grams...is this right?
September 10, 2009 by Emily

phy sci 101
If you have 24 grams of an unstable atom with a half life of 5,000 years, how many grams would be left after 15,000 years
March 5, 2010 by aida

9th grade
How many grams of water must be added to 2 grams of a 65% iodine solution in order to produce a 42% iodine solution? Round your answer to the nearest tenth
July 26, 2010 by SHAKAYLA

Chemistry
A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing-point depression of the solvent if the freezing point constant is -1.86 C/m?
January 14, 2011 by Maria

chemistry
A solution is made by dissolving 21.5 grams of glucose (C6H12O6) in 255 grams of water. What is the freezing-point depression of the solvent if the freezing point constant is -1.86 C/m?
September 25, 2011 by ryan

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