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January 26, 2015

Search: 12. How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7 g Fe?

Number of results: 18,989

college chem
125g MgSO4 • 7 H2O how many grams of anhydrous compound can be obtained
May 13, 2014 by mario

chem
1) how many molecules are present in 1.5 moles of NaCl? 2) how many atoms of chlorine are in 19.0 grams of MgCl2?
May 29, 2014 by lala

chemistry
If you mix 50 grams of NaHCO3 in 2.0 liters of water, calculate molarity & molality
June 4, 2014 by Noah

math
A 5 kg bag of apple costs R65. What is the cost of 500 grams of apples
July 28, 2014 by Katlego

algebra
1 cm to the third of aluminum weighs 2.7 grams if a sheet is 0.003 8 find the weight
September 27, 2014 by joyce

chem
What is the mass in grams in Br in 7.20 moles of FeBr2?7.20 mol FeBr2x215.65=1552.68=1553 g/m
September 30, 2014 by Claudett2

science
how many grams of CO2 (g) are there in 82.0ml of the gas at 0.916 atm and 30 degrees ceksius
November 2, 2014 by sherry

science
if .38 kJ of heat is added to 19.6 grams of ice at -12.0 degrees celsius, what will be the final temperature?
January 10, 2015 by Sydney

college chem
At 750°C, the Kp for the reaction 2 CO + O2➞ 2 CO2 is 2.72 x 10^11. ( 2.72 times ten to the eleventh) At that temperature, CO and O2 are added to a constant volume vessel. The initial pressure of the CO is 2.00 atm, and that of the O2 is 1.50 atm. Calculate the ...
February 27, 2010 by josh

Science
_______ and heat caused by overlying rocks and ___________________ elements produce magma. pressure for first word magma large
October 24, 2006 by Liz

biology
The stoneworts are green algae that produce flagellated sperm in complex multicellular antheridia. True False I think its true but not sure
October 2, 2007 by Ernest

Physics
An advertisement claims that a centrifuge can produce a radial acceleration of 3,524g at 4,608 rev/min. Calculate the required radius of the centrifuge.
April 6, 2008 by Charlie

Science
Which of the following would most likely NOT be likely to produce a microclimate? a. an ocean shoreline b. a valley c. a flat prairie d. a large city
January 15, 2009 by Emma

chemistry
How many milliliters of a 15.0%, by mass solution of KOH(aq) ( d= 1.14g/mL ) are required to produce 27.0 L of a solution with pH = 11.70? I'm really not sure how to do this, it's from Acids & Bases chapter. Any help is appreciated, thanks. (:
February 22, 2009 by Agatha

chemistry
What [I^-]should be maintained in KI(aq) to produce a solubility of 1.9×10−5mol PbI2/L when PbI2 is added? (sorry i cant find it under the posted questions )
March 9, 2009 by CHEMistry help

Calculus
DEMAND FUNCTION: p = 492-0.15x^2 COST FUNCTION: C = 920+87x Find the number of items (x) that will produce maximum profits.
November 4, 2009 by John

chemistry
How do I write the skeleton equation representing the heating o f magnesium carbonate to produce solid magnesium oxide and carbon dioxide gas?
March 15, 2010 by Brittany

Oceanography
Toledo, OH is on the western end of Lake Erie. Would a north, west, or east wind produce the biggest wave in toledo? Why?
March 22, 2010 by Krysten

physics
1)How can the CG of an irregularly shaped object be determined? 2) What is the lever arm of a force? 3) In what direction should a force be applied to produce maximum torque?
July 10, 2010 by anonymous

business
Many of the toy products sold in the United States are imported from Taiwan because the Taiwanese can produce these products more efficiently than U.S. companies. This is an example of
July 19, 2010 by kyle

elementary-math
Do you think that the formula p=6n+1, where n, is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion
October 20, 2010 by Rena

elementary-math
Do you think that the formula p=6n+1, where n, is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion
October 20, 2010 by Rena

chemistry
find the mass of C3H8 required to generate 2.5x10^8 KJ of energy when combusted with O2 gas to produce CO2 gas and water vapor
November 1, 2010 by sara

Chemistry
For the reaction: CH4(g) + 2O2(g)-->CO2(g)+2H2O (l) ÄH = -50.38 kJ/mol, How many moles of methane (CH4) must be burned to produce 137 kJ of heat?
November 7, 2010 by Luke

Science
3 CaSO4 + 2 AlCl3 Al2(SO4)3 + 3 CaCl2 How many moles of aluminum chloride are required to produce 97.0 g of calcuim chloride in the above reaction?
December 16, 2010 by Catherine

science 6th grade
Statement: Most compounds that produce this in aqueous solution are ionic. Does this statement refer to an acid or a base or both?
January 2, 2011 by Al

microeconomics
“Competitive firms do not want to produce its goods even after an increasing marginal product has set in and the marginal cost is decreasing”. Do you agree?
January 6, 2011 by mimi

physics
Within the nucleus. What strength of electric field does a proton produce at the distance of another proton, about 4.00×10−15m away? ___N/c
February 15, 2011 by Mattie

chemistry
What is the chemistry behind the “Breathalyzer” test. I'm supposed to explain the chemicals and structures involved with the reactions which produce the positive and negative results
March 24, 2011 by annonymous

science
name the water soluble substance witch added with delute hcl and produce gas tarn lime water milky?
June 25, 2011 by ashok

Chemistry
254 g of copper sulphate, CuSO4 is dissolved in water to produce 650 ml of solution. Determines the degree of concentration of the solution in mol / L.
October 1, 2012 by Maxine

math
find the interest rate to the nearest hundredth of a percent that will produce $2500, if $2000 is left at interest compounded semiannually for 4.5 year
October 23, 2012 by amber

pharm chem-dilution
prepare a 50ml of potassium permanganate solution such that 10ml diluted to 250ml will produce a 1 in 2000 solution
February 16, 2013 by oluchi

pharm chem-dilution
prepare a 50ml of potassium permanganate solution such that 10ml diluted to 250ml will produce a 1 in 2000 solution
February 16, 2013 by oluchi

math
The markup on a restaurant mean is 250%. A meal costs $7.25 to produce. How much will the customer be charged, after markup and 5% GST are applied?
July 4, 2013 by alyssa

U.S. Government and Economics
I need two examples of someone being a producer I know producers produce goods and services, but I can't think of any examples. Help plz.
September 26, 2013 by Mary

physics
a heat engine operates between 403 K and 1263 K at 67% of Carnot efficiency. How much work can it produce from 5900J of input heat?
November 6, 2013 by Sara

SCIENCE (Drugs)
(fill in the blank) Addictive drugs produce changes in one particular group of synapses that use the neurotransmitter _______________.
November 25, 2013 by Sammi

P.E. help
Non-renewable resources mean it takes a longer time for the earth to produce it than the rate at which we use it. True False Is the answer True?
December 14, 2014 by callie

AP Biology
in cellular respiration, which compound has the highest free energy (will produce the most ATP when oxidized)? acetyl CoA glucose pyruvate fructose bisphosphate glyceraldehyde-3-phospate
October 21, 2007 by Sarah

Environemtal science
I need help explaining the four factors that produce changes in poplution and what could happen to the nutria population after all the land is depleted of the nutrias' food resources?
December 2, 2008 by kia

adolescents and other problems
iq tests ? a.relate only to the present b.fail to predict how well a child will do in school c.are culturally biased d.produce higher scores in bright children my answer is c
August 2, 2013 by susue

adolescents and other problems
iq test? a.relate only to the present b.fail to predict how well a child will do in school c.are culturally baised d.produce higher scores in brighter children my answer is c
August 2, 2013 by susue

Physics
A linear spring of stiffness k is designed to stop the 20-Mg railroad car traveling at 8 km/h within 400mm after impact. Find the smallest value of k that will produce the desired result.
March 17, 2014 by Ivan

Dynamics
A linear spring of stiffness k is designed to stop the 20-Mg railroad car traveling at 8 km/h within 400mm after impact. Find the smallest value of k that will produce the desired result.
March 17, 2014 by Ivan

Chem
The density of ethanoic anhydride is 1.092 g/mL. Use this value, and the amount that you used in the laboratory to show that ethanoic anhydride is in excess for your preparation of ASA?, 2.5ml of ethanoic anhydride was used.
March 14, 2014 by Dan

chemistry - equilibria
1. A(aq) + B(aq) ¡ê C(aq) + D(aq) Initially, 1 mol of A and 1 mol of B are allowed to react and come to equilibrium. It is found hat there is 0.5 mol of A left at equilibrium. Calculate Kc for the reaction. how do i work out Kc? when ive done questions b4 ive had volume/conc ...
September 14, 2008 by alyx

chemistry
Assuming all volume measurements are made at the same temperature and pressure, how many liters of oxygen gas would it take to react completely with 7.25 liters of hydrogen gas? Show all of the steps taken to solve this problem. Unbalanced equation: H2 (g) + O2 (g) yields H2 O(g)
July 14, 2011 by kendra

Physic/Chemistry
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. After actually running the reaction you determined the percent yield was only 78.5%. How many LITERS of CO2 did you make? (Must put CO2 in answer label)
May 20, 2014 by Bree W.

Chemistry
A 1.00-kg sample of Sb2S3(s) and a 10.0-g sample of H2(g) are allowed to react in a 25.0-L container at 713 K. At equilibrium, 72.6 g H2S(g) is present. What is the value of Kp at 713 K for this reaction? Sb2S3(s) + 3 H2(g) <----> 2Sb(s) + 3 H2S(g)
October 27, 2010 by Shanice

chemistry
Most elements are stable with eight (8) valence electrons. True or False Elements react in order to gain, lose, or share electrons. True or False
November 29, 2010 by samantha

Chemistry
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium?
January 19, 2013 by Paul

statistics
You are a travel agent and wish to estimate, with 98% confidence, the proportion of vacationers who use an online service or the Internet to make travel reservations. Your estimate must be accurate within 4% of the population proportion. a) No preliminary estimate is available...
April 6, 2011 by alex

biology
Why are enzymes needed by the cell? en.wikipedia. org/wiki/Enzyme
December 5, 2006 by Tammy

math Thanks to everyone for the help it's needed!
what would be the radius of a circle with a diameter of 8 inches?
February 12, 2008 by erica

physics
How much force is needed to accelerate a 50-kg rider and her 250-kg motorcycle at 5 m/s2?
October 2, 2008 by Dee

help needed
describe the contribution early people made ot later civilization?
October 21, 2008 by Anonymous

algebra-Needed Quick
find the domain of a logarithmic function of f(x)=log[2](x-9)
February 19, 2009 by john

Chemistry
I needed what Cr the metal is soluble and insoluble in and inks was supposed to be links.
October 14, 2009 by Anonymous

Chemistry
What volume of 0.130 M NaOH is needed to neutralize 4.00 g of benzoic acid?
November 20, 2009 by Anonymous

chemistry
How many moles of O2 are needed to combine with 0.646 mol Al to give Al2O3?
March 12, 2010 by khin

chemistry
How many moles of O2 are needed to combine with 0.646 mol Al to give Al2O3?
March 12, 2010 by khin

chemistry
How many moles of O2 are needed to combine with 0.288 mol Al to give Al2O3?
March 15, 2010 by .

chemistry
How many kilojoules are needed to vaporize 3.00 liter of ethanol at 78 degree celcieus?
April 9, 2010 by Jeanette

chemistry
How many mL of 0.750 M HCl are needed to neutralize 14.89 mL of 0.350 M NaOH? ____ mL
May 5, 2010 by ashlee

chemistry
what volume of HCl gas is needed to neutralise 50 ml of 0.1M NaOH at stp?
May 20, 2010 by boond

Chemistry
How many calories of heat are needed to raise 10 g water from 20 to 21 degree celcius
July 22, 2010 by Megan

physics
a spacecraft has an acceleration of magnitudes 5.0g what distance is needed for it to attach a velocity of 10 km/s?
August 8, 2010 by jether

chemistry
Home many drops of 0.1M HCl is needed to neutralize 10mL of 1M NaOH?
August 14, 2010 by georgia

college chemitsry
calculate the calories needed at 0 C to melt 200. g of ice
September 8, 2010 by Amanda

physics
What force is needed to accelerate a child on a sled (total mass = 65.0 kg) at 1.75 m/s^2
October 11, 2010 by Katie

Physics
How do you calculate the energy needed to heat 4 kg of water from 25oC to 45oC?
November 5, 2010 by Angel

Chemistry
How many calories would be needed to convert 8.0g of ice at 0C to steam at 100C?
November 9, 2010 by Amber

science- chemistry
How much energy in kilojoules is needed to heat 5.00 g of ice from -10.0 C to 30.0 C ?
December 7, 2010 by allie

SOCIAL STUDIES
What qualifications are needed for a country to become a world power?
December 9, 2010 by Matt

us history
what would teddy roosevelt put in a time capsule if needed to?
December 12, 2010 by matthew

Science
how much force is needed to accelerate a 68 kg-skier at a rate of 1.2 m/sec sq
January 13, 2011 by Morgan

science
What net force is needed to accelerate a 25kg cart at 14m/s2?
January 19, 2011 by ton

deer hunting
how many feet of fence needed to enclose 6000 acres
January 25, 2011 by Rema

Science
Calculate the Mass of C6H12O6 needed ot generate 2575 KJ of energy
February 10, 2011 by Thomas

chemistry
Calculate the volume needed to dissolve 11.2g CuSO4 to prepare 0.140M?
March 9, 2011 by cris

Chemistry
How much sodium carbonate is needed to precipitate nickel sulfate
March 24, 2011 by Hal

grammar
what are the parts of speech in this sentence, "they decided the hedge needed a trim."
September 7, 2011 by Anonymous

chem
NaC3H5O3 is needed to create 1000mL volume of ringers lactate with 6.5 ph
September 11, 2011 by debra

chemistry
how many milliliters of concentrated NaOH(19.3 M) are needed to make 8.00 L of 0.25 M base solution?
October 20, 2011 by HElp

Science
Calulate the force needed to accelerate a 2,300 kg mass at 5.5m/s/s acceleration.
November 7, 2011 by Brenda

Math
How many .5 cm x.5 cm x .5 cm cubes are needed to completely fill a rectangular prism measuring 4 cm x 4 cm x 4 cm?
November 27, 2011 by Anonymous

Math
How many .5 cm x.5 cm x .5 cm cubes are needed to completely fill a rectangular prism measuring 4 cm x 3 cm x 3 cm?
November 27, 2011 by Anonymous

math
How many years will be needed for 3000 to grow to 5000 at 4.5% compounded monthly
December 8, 2011 by lg

Physics
What force would be needed to accelerate a 0.040-kg golf ball at 20.0 m/s^2??
December 14, 2011 by Amber

Maths
How many points would there be if you needed to draw a 21 lined mystic rose
December 30, 2011 by Sarah

science
force needed to pull a box of 500b across the table
January 18, 2012 by pratibha

chemistry
What mass of oxygen is needed for the complete combustion of 2.50×10−3 of methane?
February 7, 2012 by ASh

Chemistry
What mass of KH2PO4 is needed to prepare 500.0 mL of a 0.067M solution?
February 9, 2012 by John

networking
In an analog cellular structure, what is needed to establish a valid authentication?
February 13, 2012 by Joe

accounting
When a merchandiser sells on account, which of the following is not needed to record the transaction?
February 28, 2012 by Michelle

physics
What net force is needed to accelerate a 1.6 × 103kg automobile forward at 2.0 m/s2?
March 6, 2012 by madison powell

Chemistry
What volume of 3.0M sodium hydroxide will be needed to neutralize 2.0 L of 1.0M hydrochloric acid?
March 21, 2012 by Laurie

Chemistry
How many mL of .175M H3PO4 are needed to neutralize 15.00mL of .33M NaOH?
April 8, 2012 by Sam

Pre-Calculus
How many terms of the series -6+0+6+12+... are needed to yield a sum of 324?
April 26, 2012 by Sangita

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