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January 22, 2017

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: 22,882

STATS Math
Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) describe the sampling ditriribution of p^ (choose the ...
November 26, 2014 by LADO

Chemistry
Given the chemical reaction: N2+3H2--->2NH3 If 20 molecules of nitrogen react with 30 molecules of hydrogen to from ammonia, what is the total number of molecules present after the reaction goes to completion?
October 31, 2008 by Songyi

chemistry
For the reaction below, Kp = 1.16 at 800.°C. CaCO3(s) CaO(s) + CO2(g) If a 21.7-g sample of CaCO3 is put into a 10.6 L container and heated to 800°C, what percentage by mass of the CaCO3 will react to reach equilibrium?
February 3, 2013 by gina

chemistry
For the reaction below, Kp = 1.16 at 800.°C. CaCO3(s) CaO(s) + CO2(g) If a 21.7-g sample of CaCO3 is put into a 10.6 L container and heated to 800°C, what percentage by mass of the CaCO3 will react to reach equilibrium?
February 3, 2013 by gina

applying stoichiometry
10.0 g aluminum reacts with 66.5g bromine to form 65.0g aluminum bromide. determine the limiting reactant and calculate the theoretical and percent yield. once the reaction has occured as completely as possible, what mass of the excess reactant is left?
February 5, 2012 by danielle

Chemistry
What mass of silver chloride, AgCl will precipitate from a solution that contains 1.50 g of, calcium chloride, CaCl if an excess amount of silver nitrate is present? CaCl2 + 2AgNO3 --> 2AgCl+ Ca(NO3)2 I keep getting 5!but its wrong...right?
January 23, 2013 by Deepa

Physics ...
Can anyone help me to calculate the energy released when 7Li and a deuteron (d) fuse to form 9Be, Given only mass excess 7Li 16004 uu, d 14102 uu , and 9Be 12182 uu uu might be microunit perhaps ??? Thank you explanation would be good thanks
August 26, 2013 by Dino

Physics ...
Can anyone help me to calculate the energy released when 7Li and a deuteron (d) fuse to form 9Be, Given only mass excess 7Li 16004 uu, d 14102 uu , and 9Be 12182 uu uu might be microunit perhaps ??? Thank you explanation would be good thanks
August 26, 2013 by Dino

Physics ...
Can anyone help me to calculate the energy released when 7Li and a deuteron (d) fuse to form 9Be, Given only mass excess 7Li 16004 uu, d 14102 uu , and 9Be 12182 uu uu might be microunit perhaps ??? Thank you explanation would be good thanks
August 26, 2013 by Dino

math
this problem is given me very much difficulty because of the set up and what to do. can someone assit me if you have a few minutes. thanks. Income. A baker has 250 units of flour, 90 of sugar, and 150 of raisins. A loaf of raisin bread requires 1 unit of flour, 1 of sugar, and...
June 14, 2007 by student

chemistry
Bill finds an unusual object and wishes to calculate it's density. He discovers a problem of accurately weighing it, because it won't stay on the weighing pan. To solve this he adds the object to a beaker containing 190 mL of distilled water and finds the water level rises to ...
September 7, 2009 by abbey

chem
I am still having a little problem with my original question. However, this is what I have done so far. I am not sure what to do with the density of the solution of 0.78 g/mL. The answer I came up with is 5.47 mol/kg. I found the density of the water in grams then I converted ...
February 13, 2011 by paula

chemistry
Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry - DrBob222, Wednesday, December 8, 2010 at 7:57pm ...
December 8, 2010 by Stacy

chemistry
C6H12O6(s) +6CO2(g) +6H2O9g) 1) given 2 moles of glucose and 14 moles of O2, how many moles of CO2 could be produced? 2) which is the limiting reactant ? 3) how many moles of the excess reactant remain?
May 23, 2010 by Mickey

chemistry
If the reaction below proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.97 kg SO2 reacts with an excess of CaCO3 and O2? 2 CaCO3(s) + 2 SO2(g) + O2(g) 2 CaSO4(g) + 2 CO2(g)
April 7, 2011 by za

Chemistry
For the following reaction: Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4 How many moles of Na2SO4 can be made with 3.2 moles of NaOH and excess Al2(SO4)3?
November 14, 2011 by Carrie

Chemistry ( HELP PLEASE!!! )
Consider the reaction H3PO4+ 3NaOH→Na3PO4+ 3H2O. How much Na3PO4 can be prepared by the reaction of 3.43 of H3PO4 with an excess of NaOH?
March 13, 2015 by Farrell

physics
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8000 N/C. The mass of the water drop is 3.54 10-9 kg How many excess electrons or protons reside on the drop?
January 8, 2011 by michelle

Physics
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8380 N/C. The mass of the water drop is 3.40 10-9 kg. How many excess electrons or protons reside on the drop?
March 29, 2011 by Anonymous

chemistry
the chlorine in a 0.12g sample of 95% pure magnesium chloride is to be precipitated as silver chloride, calculate the volume of 0.100m of silver nitrate solution required to precipitate the chloride and give a 100% excess.
July 7, 2011 by julius

physics
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 12300 N/C. The mass of the water drop is 4.71 × 10-9 kg. How many excess electrons or protons reside on the drop?
February 25, 2013 by natasha

chemistry
Assume that 50ml of 0.01M edta solution were added to 25ml of co solution and the excess edta required 20ml of 0.005M mg solution. Calculate ppm co+ present. The answer 942ppm Bob helps me
March 2, 2013 by Fai

Chemistry
Could someone please walk me through how to solve this problem: A sample that is 63.9 % chloride by mass is dissolved in water and treated with an excess of AgNO3. If the mass of the AgCl precipitate is 1.045g, what was the mass of the original sample?
October 6, 2015 by Ashley

Chemistry - Heat Calculations
Calculate the heat released when 4 L Cl2 with a density of 2.46 g/L at 25 degrees C reacts with an excess of sodium to form solid sodium chloride at 25 degrees C.
April 19, 2010 by Akira

chemistry
A .500 g sample of impure CaO (a solid) is added to 50.0 mL of 0.100 M HCl. The excess HCl is titrated by 5.00 mL of .125 M NaOH. What is the percentage of CaO in the sample?
May 9, 2012 by b

chemistry
a 5 g mixture of natural gas containing ch4 and c2h4 was burnt in excess of oxygen yielding 14.5 g of co2 and h2o.What is the weight of ch4 and co2 in the mixture
July 25, 2013 by sim

chemistry
Calculate the theoretical yield of alum if 0.200g of Aluminum was reacted with excess KOH and H2SO4? I don't even know how to start it. Please help. Also I wanted to say thank you for the help I've gotten from this website it has helped me a lot. I feel like I'm understanding ...
October 16, 2014 by Luis

chemistry
Potassium permanganate reacts with sulfuric acid as per the equation shown below. Indicate the excess reactant after the reaction of 7.60 g KMnO4 and 10.32 g H2SO4. 4 KMnO4 (aq) + 6H2SO4 (aq) + 2K2SO4 (aq) + 4MnSO4 (aq)+ 6H2) (l) + 5O2 (g) I have no idea where to start or what...
September 19, 2009 by Some kid

Chemistry
When 0.250 mol of CH4(g) reacts with excess Cl2(g) at constant pressure according to the chemical equation shown below, 177 kJ of heat are released. Calculate the value of Delta H for this reaction, as written. 2CH4(g)+3Cl2(g)-->2CHCl3(l)+3H2(g) delta H=?
March 18, 2010 by Daqa

Chemistry
1. Which element would react more actively when placed in water to form strong base? A. Potassium B. Magnesium C. Fluorine D. Oxygen Would it be A? 2. Which transition metal has inner third orbital partially filled? A. Iron B. Gold No ideas on this Thank you.
May 31, 2009 by Anonymous

organic chemistry
compare and contrast the reactivity of the organometallic reagents R2Cd, RLi, R2CuLi, RMgBr, RZnBr with respect to ethyl chloride, ethanoic acid and 2-cyclohexen-1-one im not really sure what its asking and i don't know how they react differently determines their reactivity ...
November 2, 2009 by Lucy

Chemistry
Based on the balanced equation 2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of NaBr formula units formed when 126 NBr3 molecules and 192 NaOH formula units react?
February 15, 2010 by Josh

chemistry
Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container as illustrated below. Assuming the reaction goes to completion, draw a representation of the product mixture. Explain how you arrived at this representation.
March 3, 2010 by Mary

Chemistry
Calculate the volume of 1.0 M copper(II) sulfate solution required to completely react with 1.0 g of Fe(s) according to this equation: 2 Fe(s) + 3 Cu^2+ (aq) --> 2 Fe^3+ (aq) + 3 Cu (s). the copper in the reactant has a charge of 2+ and the iron in the product has a charge ...
March 5, 2013 by Sabrina

Language Arts
The narrator of stolen day says his family often laughs at him.How does he react when they do? A.He wishes he were an orphan. B.He dislikes everyone he knows. C.He appreciates the attention. D.He dislikes being teased. My answer is D. can you please check my answer?
October 28, 2016 by I NEED HELP PLEASE!!!

geometry
1. What is the lateral surface area of a square pyramid with side length 11.2 cm and slant height 20 cm? 224 cm2 448 cm2 896 cm2 2508.8 cm2 2. What is the lateral surface area of a cone with radius 19 cm and slant height 11 cm? 19 cm2 30 cm2 200 cm2 209 cm2 3. What is the ...
April 18, 2012 by lilman

science
Stomach acid has a pH of about 2. What conclusion can you reach about the pH of an antacid solution that is used to neutralize excess stomach acid? Use Figure 8-3 to answer this question.
December 9, 2009 by Anonymous

12th grade chemistry
If the reaction below proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.27 kg SO2 reacts with an excess of CaCO3 and O2? 2 CaCO3(s) + 2 SO2(g) + O2(g) 2 CaSO4(g) + 2 CO2(g)
January 27, 2011 by Matt

Chemistry
The reaction for the burning of one type of match tip is as follows: P4S3(s) + 8 O2(g)----> P4O10(g) + 3 SO2(g) What volume in L of SO2 at STP can be produced by the burning of 1.00 g P4S3 in excess O2?
September 28, 2011 by Maci

Chemistry
For the reaction Al(s) + 3 HCl(aq)->AlCl3(s) +3/2 H2(g) it was observed that when 4.00g of aluminum reacted with excess HCl, exactly 30,0 kJ of heat was released. What is the delta H for this reaction? I do not understand how to get the delta H value.
January 22, 2012 by Hannah

ap
An excess of aqueous AgNO3 reacts with 44.5 mL of 5 M K2CrO4(aq) to form a precip- itate. What is the precipitate? 1. K2CrO4 2. KNO3 3. Ag2CrO4 4. AgNO3 What mass of precipitate is formed? Answer in units of g
October 1, 2012 by cheri

Chemistry
a student conducts and experiment by reacting 39.6g CuSO4 with an excess of MgS. The reaction yields 9.5599g CuS. What is the percentage yield? MgS+CuSO4=CuS+MgSO4
October 3, 2012 by Amanda

chem
I have a problem i don't get... H3PO4+3NaOH -> 3H2O+Na3PO4 How many moles of Na3PO4 will be produced from 1.7 moles of NaOH in the presence of excess H3PO4?
January 18, 2009 by Bob

science
Ca3(PO4)2 + 2H2SO4 = 2CASO4 + Ca(H2PO4)2 How many moles of CaSO4 can be produced by the reaction of 0.39 moles of Ca3(PO4)2 with excess H2 SO4?
October 24, 2010 by neil

physics
To say an object has a negative charge is to say it has an excess of what kind of charges? A) Either protons or electrons.B) Electrons.C) Protons.D) None of these
April 10, 2012 by Jim

Chem
Calculate the mass of PbCl2 formed when an excess of 0.100 M solution of NaCl is added to 0.4L of 0.7 M Pb(NO3)2. Pb(NO3)2 + 2 NaCl --> PbCl2 + 2 NaNO3
May 18, 2014 by DOnnie

Biology
Of the following substances, which would react positively with Biuret's, Lugol's, and Benedict's? 1. water 2. starch 3. glucose 4. maltose 5. sucrose 6. fructose 7. galactose 8. albumin 9. hamburger juice 10. onion juice 11. milk 12. potato juice 13. lactose
November 3, 2007 by Coral

Biology
Of the following substances, which would react positively with Biuret's, Lugol's, and Benedict's? 1. water 2. starch 3. glucose 4. maltose 5. sucrose 6. fructose 7. galactose 8. albumin 9. hamburger juice 10. onion juice 11. milk 12. potato juice 13. lactose
November 4, 2007 by Tommy

math(pre calc)
A 100 foot tall antenna sits part way up a hill. The hill makes an angle to 12 degrees with the horizontal. In other words, if you were going to walk up the hill, you would walk at an angle of 12 degrees. To keep the antenna stable, it must be anchored by 2 cables.The distance...
April 18, 2016 by Need this asap please#2

business
1. On the income statement, extraordinary items are reported A. immediately after the continuing operations section. B. before the operating income section. C. immediately before the discontinued operations section. D. net of income tax or net of income tax savings. 2. _______...
August 11, 2014 by sharon

Chem
22.4/2 liters. what is the volume 16 grams of O2 at STP?
February 5, 2007 by bobpursley

chemistry
how many molecules are there in 450 grams of FeF3?
September 15, 2007 by jessica

science
How many grams of water is 6.023451 liters?
September 7, 2008 by codie

science
what is the molar mass for C2H5OH in grams
December 15, 2008 by lil iverson01

math
how many grams of NaC1 are in 100mL of NS solution?
March 14, 2009 by karen

Chemistry
How many grams are there in 2.3 ¡Á ¡¼10¡½^24 atoms of silver?
May 13, 2009 by Taylor

chemistry
How many oxygen atoms in 9 grams of sugar?
August 31, 2011 by sabaah

chemistry
how many grams of phosphorus are there in 160 g of P4O10
November 10, 2009 by Trace

chemistry
how many grams of Sb2S3 will contain 4.80 moles of S
November 14, 2009 by Trace

MATH
A JUMPROPE IS MEASURED BY GRAMS OR KILOGRAMS
March 30, 2011 by CHRIS

Chemistry
How many grams of potassium chromate are in K2CrO4?
May 26, 2010 by Ashley

science
Convert 12.5 mol Cl2 to grams
July 11, 2010 by Anonymous

chemistry
Determine the mass in grams of 2.56*10^24 atoms in Li
October 6, 2010 by Aundrea

Chemistry
What is the mass, in grams, of each of the following? 44.3 mol Xe
October 14, 2010 by Lisa

Science
how many atoms of carbon in 18 grams of C3H8o
March 28, 2011 by Sylvia

chemistry
How many grams of Au2S can be obtained from 1.17 mol?
November 16, 2010 by kim k

Chemsistry
How many moles are there in 857 grams of sodium?
November 22, 2010 by Anonymous

Chemistry
How many moles are there in 569 grams of copper
November 22, 2010 by Anonymous

Chemistry
How many moles are there in 965 grams of boron
November 22, 2010 by Anonymous

chemistry
How many molecules are 100.00 grams of H2O?
November 29, 2010 by jeff

SCIENCE
WHAT IS THE WEIGHT OF THE HUMAN BRAIN IN GRAMS?
December 16, 2010 by ANTONIO

chemistry
how many grams of drug are in 75mL of a 4% solution/
January 15, 2011 by Anonymous

idk
How many moles of carbon tetrachloride are in 51.0 grams?
January 17, 2011 by idk

chemistry
how many moles are in 5 grams of no2 molecules?
January 25, 2011 by james

chemistry
convert 4.37 moles of NaOH to grams.
January 27, 2011 by Amanda

chemistry
How many grams of NaOH are there in 2.5L of a 0.343M solution?
February 9, 2011 by twynna

chemistry
How many grams of NaOH are there in 2.5L of a 0.343M solution?
February 13, 2011 by twynna

CHEMISTRY
Benzene equals 78.11 grams/mole
February 14, 2011 by dan

chemistry
how many grams of oxygen are in 560g of ribose?
February 15, 2011 by Noelle

chemistry
How many grams of NaOH are there in 2.5L of a 0.343 M solution?
February 20, 2011 by twynna

chemistry
How many grams of NaOH are there in 2.5L of a 0.343M solution?
March 12, 2011 by n/a

chemistry
3 molecule of water contains how many grams?
March 16, 2011 by aryan

chemistry
How many mol of Oxygen are in 45.9 grams of CO2?
March 19, 2011 by Anonymous

chemistry
How many grams of Na2CO3 are required to Na2S2O3
April 4, 2011 by Rickia

chemistry
How many grams of Na2CO3 are required to Na2S2O3
April 4, 2011 by Rickia

chemistry
How many grams of O2 are required to burn 13.0g of acetylene?
April 25, 2011 by Kelsey

chemistry
how many grams of aluminum are in 25.0 ml of a 14%(w/v) solution of Al2O3?
April 25, 2011 by unk

stoichimetry
how many liters of NH3 can be produced from 23.1 grams of H2 ?
April 26, 2011 by Anonymous

Chemistry
how many grams are in 12.5 moles of chlorine (gas)?
July 12, 2011 by Help

Math
how do you convert 1000 milligrams to grams ?
September 5, 2011 by Janae

chemistry
how many grams of O2 may be produced from 50g of KClO3?
September 13, 2011 by Karen

Grams
Can you give me an examples of a 5.6 gram object?
September 14, 2011 by HM

chem
how many molecules will be in 275 grams of c2h6
November 14, 2011 by mandy

chemistry
calculate 5.7 grams PbCl2= ions Cl-1
November 14, 2011 by nina

Chemistry
how much sodium is in 1.80 grams of Na3PO4
November 20, 2011 by Anonymous

chemistry
How many grams of NH3 can be made from 375g of N2?
December 5, 2011 by sara

Chemistry
How many moles are in 12.0 grams of Potassium Sulfide?
February 19, 2012 by Alison

Chemistry
How do you convert Ounces to Grams longhand?
March 22, 2012 by Lee

to ms.sue
each paper clip weighs 30 grams
May 10, 2012 by Celest

chemistry
if 14.7g of na reacts with 7.9g og br how many grams of nabr are found
September 3, 2012 by Anna

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