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February 24, 2017

Search: 14 carat gold has a purity of 58.3%. How many moles of gold are in 154 grams of 14 carat gold? Answer in

Number of results: 70,742

Chemistry
How many moles of NH3 must be added to 1.00 L of solution to dissolve 0.979 g of CuCO3? For CuCO3, Ksp = 2.3 × 10-10.
March 10, 2015 by Jane

chem
An experimental chamber has a volume of 60 L. How many moles of oxygen gas will be required to fill the chamber at STP?
March 11, 2015 by iNeedHelp

chemisty
In aqueous reactions, if the amounts of reactants (and products) that are used are not given in moles, they are usually given in?
April 13, 2016 by Sammy

physics
2H2(g)+O2(g)-2H2O(g) Calculate the initial number of moles of oxygen gas and hydrogen gas
August 3, 2016 by Tumi Mokoena

Chemistry
If a 30.pL tank of laughing gas contains 2.74 moles of N2O at 25 degrees C, what is the pressure (atm) in the tank?
December 5, 2016 by Dana

Chemistry
How many moles of bromine atoms are in 8.0x10^20 bromine molecules?
September 11, 2009 by Anonymous

chemistry
if you have 720 g of the compound CaBr2 how many moles of it do you have
May 23, 2010 by laquan

Chemistry
How many moles of ammonium ions are in 0.807 g of ammonium carbonate?
June 1, 2010 by Anita

chemistry
How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?
October 13, 2010 by Stacy

10th grade
how many moles of anhydrous MgSO4 are in 2.04grams of MgSO4
November 4, 2010 by dasha

Chemistry
How many moles of HCl are present in a 50mL 3M solution of HCl?
January 12, 2011 by Jess

Chemistry
How many moles of HCl are present in a 50mL 3M solution of HCl?
January 12, 2011 by Jess

chemistry
A 27-gram sample of water, H2O, is how many moles of water?
March 7, 2011 by Amy

Chemstry
How many moles of NaCL are contained in .2570 L of a 37.5 mM Solution of NaCl?
May 1, 2011 by Jann

chem
How many moles of glucose (C6H12O6) are in 1.6 liters of a 0.75 M C6H12O6 solution?
January 17, 2012 by bryan

chemistry
If you have 4.90 moles of Ba, how many liters of N2 would you have at STP?
March 17, 2012 by Tom

science
How many moles of oxygen in a litre of air which has 21% oxygen by volume?
May 11, 2012 by Kanika

chemistry
How many moles of ammonium ions are in 5.393 g of ammonium carbonate?
May 15, 2012 by haley

Chemistry
How many moles of MgCl2 are present in 5 liters of a 0.12 M MgCl2 solution?
May 31, 2012 by Anonymous

chemistry
How many moles of aluminum do 5.9×1024 aluminum atoms represent?
September 22, 2012 by alex

Chemistry
How many moles of CaCl2 are in 32cm cube of 0.2M solution of CaCl2?
October 4, 2012 by desperate

Chemistry
How many moles of NaOH are in 125mL of a 4.00M solution of NaOH?
November 3, 2012 by Anonymous

Chemistry
If 32.6 g of aluminum is produced, how many moles of aluminum nitrate is reacted?
November 13, 2012 by Kim

College Chemistry
How many moles of aluminum do 2.66×10^24 aluminum atoms constitute?
January 28, 2013 by Kaycie

physics
suppose that there are 1.9*10^25 stars in the universe. how many moles of stars would this be?
April 22, 2013 by john

chem
If 41.5 moles of an ideal gas is at 4.71 atm at 49.90 °C, what is the volume of the gas?
December 1, 2013 by dinah

chemistry
0.50 mol of Fe react with 0.60 mol of O2, how many moles of Fe2O3 will form?
April 2, 2014 by matt

Chemistry
Moles of Copper in the original .825g of Copper Oxide
October 8, 2014 by Amanda

chemistry
You need 2.5 moles of aluminum for an experiment. How many atoms of aluminum is this?
October 24, 2014 by Anonymous

chemistry
what volume of 0.5 BaCl2 is needed to have 0.1 moles of BaCl2?
November 25, 2014 by Amy

chemistry-URGENT
how many moles of atoms are contained in 7.654 x 10^32 atoms of Ga ? Thank you!
December 2, 2014 by Ellie

env.sc.
How many No.of ions of cadmium present in 3n moles of cadmium nitrate
March 13, 2015 by upasana singh

chemistry
how many moles of K2SO4 are present in 111.5 mL of 0.516 M K2SO4?
April 22, 2015 by Chem3A

Chemistry (atoms)
How many atoms of oxygen, O, are in 0.0595 moles of water?
October 23, 2016 by Ray

science
Hi I have 2 questions I hope someone can help me :) 1)A pocket of gas is discovered in a deep drilling operation. The gas has a temperature of 480c and is at a pressure of 12.8 atm. What volume of gas is required to provide 18.0 L of gas at the surface where the conditions are...
March 25, 2007 by lindsay

math-check
I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^...
March 24, 2012 by help

math
Solve each equation. What am I doing wrong because the answer is suppose to be 11/2 and I don't get the answer. Here's what I'm doing... Problem: 2x+1/4-3x-4/5=1/2 I get: 10x+5-12x-16=10 Which gives me -2x=21 My answer is -21/2 the correct answer is suppose to be 11/2
September 2, 2010 by Ronnie

calculus-answer check
1. Determine the slope of the tangent to the graph of y=4/x at (1,4) my answer is -4 2.What is the slope of the line perpendicular to y=(x-2)/(x+2) at (2,0) my answer is -4 3. For which value of x is the derivative of f(x)=(x-1)^10(x+2)^5 equal to 0? my answer is 1
May 9, 2014 by Kim

chemistry
The question: Formic acid when warmed with sulfuric acid, decomposes to water and carbon monoxide. HCHO2(l)-->H2O(l)+CO(g) If 3.85L of carbon monoxide was collected over water at 25C and 589mmHg, how many grams of formic acid were consumed? (This problem requires that you ...
June 17, 2009 by Gweedo

world geography
1. When Australia became the federated Commonwealth of Australia in 1901, Sydney and Melbourne competed to be the capital city. A compromise was reached and _______ became the federal capital in 1928. A. Canberra B. Brisbane C. Adelaide D. Sydney 2. According to the World ...
June 22, 2013 by SUB-SAHARAN AFRICA, AUSTRALIA,OCEANIA, AND ANTARTI

Chemistry
Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation ΔG∘=−nFE∘ where n is the number of moles of electrons transferred and F=96,500C/(mol e−) is the Faraday constant. When E∘ is measured in volts, Δ...
May 18, 2014 by Tim

chemistry
You react chemical A with chemical B to make one product. It takes 100 grams of chemical A to react completely with 20 grams of chemical B. What is true about the chemical properties of the product? a. the properties are more like those of chemical A b. the properties are more...
February 13, 2012 by student

Chemistry
Titration was used to determine the molarity of acetic acid in vinegar. A primary standard solution of KHP was used to standardize the NaOH. 1. When performing this experiment, impure KHP was used to standardize the NaOH solution. If the impurity is neither acidic or basic, ...
March 28, 2014 by Sandy

Chemistry
Express each quantity as a mass in grams. a) 3.70mol of H2O b) 8.43 x 10^23 molecules of PbO2
October 20, 2007 by Marty

chemistry
Using calories, how much heat will 32 grams of water absorb when it is heated from 25 C to 80 C?
February 5, 2008 by chelsea

Chem Also Urgent!
How do I determine the number of grams for the following substance: 2.40 mol O2?
February 26, 2008 by Lisa

Chemistry
4 NH3 + 5 O2 --> 4 NO + 6 H2O. How many grams of O2 are required to product 90 g of NO? Please assist in solving.
July 24, 2008 by Amber

basic chem lab question
what is the mass of a typical 50 ml glass beaker in grams
September 21, 2008 by al

chemistry/math
If aluminum has a density of 2.78 g/ml, how much space would 32 grams occupy?
September 29, 2008 by Michelle

Chemistry
How many grams of phosphorus react with 31.3 L of O2 at STP to form tetraphosphorus decaoxide? P4(s) + 5 O2(g) -> P4O10(s)
October 13, 2008 by Niki

Chemistry
Calculate the heat released when 25.0 grams of water freezes at 0 degrees celsius.
December 28, 2008 by Completely Lost

chem
find the density of a cube if it has a mass of 2 grams and has a length of i centimeter on each edge/
January 9, 2009 by tonya

chemistry
how many grams of solid NaOH are required to prepare 200.0 mL of a .050 M solution?
September 1, 2009 by mariah

chemist ry
if 500 g of KCLO3 decomposes and produces 303 g of KCL, how many grams of O2 are produced?
November 7, 2009 by barbie

science
For the reaction 2Na(s) + Cl(g) ¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at STP)?
November 13, 2009 by Ethan

chemistry
how many grams of ethylene would have to be burned to produce 450 kJ of heat?
November 15, 2009 by mandee

chemistry
For the reaction 2Na(s) + Cl(g) ¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at STP)?
December 1, 2009 by cr

Chemistry
Estimate the solubility of lead (ll) chloride in grams per liter. ksp= 1.7 x 10^-5
December 10, 2009 by Donna

Chemistry
what is the density of an unknown substance whose mass is 4.5 grams and volume is 5 mil?
January 8, 2010 by Gary

science
N2 + 3H2 --> 2NH3 how many grams of ammonia are made if you have 15.00 g of both N2 and H2 present?
January 10, 2010 by Laur

Chemistry
Approximately how many grams of NaNo3 will dissolve in 100g of water at 20 degrees Celsius?
January 28, 2010 by Lily

chemistry
What will be the mass in grams of hydrogen atoms (only) that will be present in 22.2 g of compound A (XH3)?
February 1, 2010 by richard

chemistry
How many grams of water should be added to 25.0 g of NaCl to produce a 0.450 m solution?
February 10, 2010 by CC

Organic chemistry
How many grams of water would it take to quench 1 g of phenylmagnesium bromide?
February 12, 2010 by Chem

chem help
how many grams of carbon contains the same number of atoms as 40g of Neon
February 25, 2010 by Ernesine

chemistry
if 20g of magnesium react with excess hcl how many grams og mgcl2 will be produced
February 25, 2010 by sean

college
how to figure out how many grams of magnesium are required to produce 2.154grams of product?
February 28, 2010 by Donna

chemistry
how much heat will be released if 30 grams of octane is burned in excess oxygen?
February 28, 2010 by lisa

chemistry
grams of sodium chloride dissolved in 100mL of water at 20 degrees celcius
March 16, 2010 by ace2

chemistry
If you start with 1.00 g NaCl and an excess of the other reactants, how many grams of Cl2 will be produced?
April 14, 2010 by brooke

science
suppose 35 grams of waterare cooled from 15 c to 10 c how much heat is given off?
April 15, 2010 by Roselyn

adult education
How many grams of KOH would be necessary to make 200 mL of a 0.15 M solution?
April 23, 2010 by debbie

chemistry
you have 2.0 grams of water at 0 degrees Celcius. how many kilojules of heat will freez it?
April 30, 2010 by Anonymous

chemistry
what is the number of calories of heat energy released when 25 grams of water is cooled from 20 C to 10 C?
March 2, 2011 by Anonymous

chem
how much pressure does 35 grams of carbon dioxide at 400 kelvin exert?
May 9, 2010 by pat

chemistry
6) How many grams of copper (II) fluoride, CuF2, are needed to make 6.7 liters of a 1.2 M solution?
May 11, 2010 by jeff

Chemistry
How many grams of lithium nitrate, LiNO3, are required to prepare 3.00 × 102 mL of 2.00 × 10–1 M solution?
May 12, 2010 by Chris

chemistry
1. How many joules of energy must be absorbed to raise the temperature of 20 grams of water from 25°C to 30°C?
May 21, 2010 by ana

chemistry
what is the molarity of 20 grams of HCI mixed with water to make 1 liter of solution
June 7, 2010 by jhjmjj

chemistry
how many grams of NaOH are contained in 250 mL of a 400 M sodium hydroxide solution
July 14, 2010 by kelly

Chemistry
What mass of chloral hydrate (C2H3Cl3O2) would contain 1.0 grams of chlorine?
August 16, 2010 by Anonymous

chemistry
How many grams of na3po4 will be needed to produce 425ml of a solution that has a concentration of na+ ions of 1.30 M?
September 11, 2010 by James

Chemistry
If 100.0 J are added to 20.0 grams of water at 30.0 degrees Celsius. What will be the final temperature?
September 27, 2010 by Kris

Chemistry
If 100.0 J are added to 20.0 grams of water at 30.0 degrees Celsius. What will be the final temperature?
September 27, 2010 by Kris

chemistry
Calculate the mass of KI in grams required to prepare 7.00 multiplied by 102 mL of a 2.60 M solution
October 12, 2010 by Anonymous

Chemistry
How many grams of KCl would be formed in the reaction of 3.000 g of K2CO3 and HCl?
October 17, 2010 by Amber

Chemistry
Calculate the number of molecules in 3.1466x10^1 grams of sulfur dioxide, SO2
October 22, 2010 by HELP

Chemistry
Calculate the number of molecules in 3.1466x10^1 grams of sulfur dioxide, SO2
October 22, 2010 by HELP

chemistry
How many grams of calcium nitrate, Ca(NO3)2, are needed to make 100 mL of a .5 M solution?
October 24, 2010 by Anonymous

chemistry
How many grams of potassium fluoride are needed to make 250 mL of a 0.31 M solution in water?
March 29, 2011 by Anonymous

chemistry
How many grams of potassium fluoride are needed to make 250 mL of a 0.31 M solution in water?
March 29, 2011 by Anonymous

chem
how many milliliters of .242 m of NaOH are required to exactly titrate 18.0 grams of H2C2O4
October 27, 2010 by Anonymous

Physics
How much heat is gained or lost when 200 grams of ice melts?
October 28, 2010 by John

Physics
How many calories of heat are gained to turn 10 grams of ice at 0 C into water at 0 C?
November 1, 2010 by Amanda

Chemistry
How many liters of CO2 would be produced if 32 grams of CH4 are combined with oxygen?
November 9, 2010 by Renee

chemistry
How many grams of H2(g)can theoretically be produced from a 5-g sample of magnesium metal and excess HC1(aq)?
November 11, 2010 by Brit

chemistry
how do I calculate what temperature is needed to heat 52 grams of ethane to occupy 1200ml?
November 17, 2010 by david

Chemistry
How much heat is given off by melting 155 grams of water?
November 18, 2010 by Sarah

physical science
An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
November 23, 2010 by t.o

Med lab tech
how many grams of KCL are required to make 5.0ml of a 35% w/v solution?
November 27, 2010 by billie

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