Tuesday
March 3, 2015

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: 57,642

chemistry
ammonia, NH3, is a typical ingrediant in household cleaners. it is produced through a combination reaction involcing N2(g) and H2(g). if 12.0 mol of H2(g) react with excess N2(g), how many moles of ammonia are produced?
April 9, 2008 by marissa

physics
A flight attendant wants to change the temperature of the air in the cabin from 18.0° C to 23.3° C without changing the number of moles of air per m3. What fractional change in pressure would be required?
April 12, 2010 by loraina

Chemistry
0.37 moles of xenon gas (Xe) are captured in a 1.0-L container at 25 degrees celcius. Given the van der Waals constants for Xe, calculate the pressure of Xe gas inside the container?
July 6, 2010 by Jordan

CHEM
Aluminum reacts with Chlorine gas to form AlCl3. [2Al(s)+3Cl2(g)=2AlCl3(s)] Given 11.0g of Al and 16.0g Cl2, if you had excess Al, how many moles of AlCl3 could be produced from 16.0g of Cl2?
September 22, 2012 by leng

Chemistry
Find the thetrical formula for .012 mol of H20, .0056 moles of Cl2 and .0060 of copper with a formula like this CuCl*H20 *=point in center
September 24, 2012 by Brett

chemistry
a glass jar containing .27 mol of Nitrogen with a leaky lid is heated from room temperature 22 celcis to 150 celcis. How many moles of Nitrogen remain? How many gtams?
October 12, 2012 by erin

Chemistry
When a 5.00 ml sample of vinegar is titrated, 44.5 ml of 0.100 m NAOH solution is required to reach the end point. What i sthe concentration of vinegar in moles per liter of solution?
November 25, 2012 by Amber

Chemistry
You have a metal tank containing 74.0 moles of nitrogen gas at a pressure of 15.0 atm. If the pressure is measured at a temperature of 25.0 °C, then the volume of the tank must be ___ liters
October 23, 2013 by Daud

chemistry
A buffer solution is prepared by mixing 99.0 mL of 0.450 M HF and 55.0 mL of 1.15 M NaF. Determine the pH of the solution after the addition of 0.01 moles NaOH (assume there is no change in volume when the NaOH is added).
March 1, 2014 by Hayla

chemistry
How many moles of magnesium chloride are formed when 55 mL of 0.70 M HCl is added to 42 mL of 1.204 g Mg(OH)2? Mg(OH)2(s) + 2HCl(aq) MgCl2(aq) + 2H2O(l) A. 0.019 mol B. 0.012 mol C. 0.021 mol D. 0.039 mol
October 13, 2014 by Morgan

chemistry
If 6.20 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced? CaC2(s) + 2 H2O(l) Ca(OH)2(aq) + C2H2(g)
February 11, 2015 by nina

AP Chem
A sample of (N2H5)2C3H4O4 contains 1.084 x 1024 carbon atoms. How many moles of hydrogen atoms are there in the same sample? Avogadro’s number = 6.022 x 1023.
February 22, 2015 by Sanz

Physics/ Chemistry please help
The active ingredient in the allergy medication Claritin contains carbon (C), hydrogen (H), chlorine (Cl), nitrogen (N), and oxygen (O). Its molecular formula is C22H23ClN2O2. The standard adult dosage utilizes 1.480 1019 molecules of this species. Determine the mass (in grams...
April 14, 2007 by Mary

science
how do i calculate the mols of sulfuric acid ? mols = grams/molar mass
February 7, 2007 by Deon

Chemistry
Calculate the amount (in grams) of AgNO3 needed to prepare 250.0 mL of 0.25 M of AgNO3.
March 9, 2008 by Allie

chemistry
2 Mg(s) + O2(g)= 2 MgO(s) ÄH= -1204 kJ How many grams of MgO are produced during an enthalpy change of 96.0 kJ?
October 2, 2009 by Vanessa

chemistry
how many grams of CaCl2 would be dissolved in 1.9 liters of a 0.2 molarity solution of CaCl2?
January 13, 2010 by q

chemistry
if you start with 5.5grams of magnesium chloride,how many grams of magnesium flouride will be produced?
February 24, 2010 by amber

science
How many grams of CuSO4 .5H2O are needed to prepare 50 ml of 0.30M CuSO4 solution
March 7, 2010 by kesiha

Chemistry
How many grams of K2SO4 would you need to prepare 1500 g of 5.0% K2SO4 (m/m) solution?
April 26, 2010 by Jack

A & M
how many grams of CaO are required for complete reaction with the HCl in 275mL of a 0.523 M HCl?
July 29, 2010 by Roxie

Chemistry
How many calories are required to raise the temperature of 75 grams of water from 20 degrees C to 50 degrees C?
December 14, 2010 by Hannah

chem
100 grams of sodium phosphate contains how many sodium ions? what is the formula?
December 16, 2010 by shane

Chemistry
How many grams of iron can be obtained from a 268 g sample of iron (III) oxide (Fe^2 O^3)?
January 12, 2011 by NDC

Chemistry
An object has a mass of 50 grams and a volume of 51 mL would this object float or sink?
January 13, 2011 by Norma

chemistry
f you have 150 milliliters of water and it freezes, how many grams of ice do you have?
January 27, 2011 by Kelsei-Natalie

chemistry
f you have 150 milliliters of water and it freezes, how many grams of ice do you have?
January 27, 2011 by Kelsei-Natalie

Chemistry
How many grams of NiSO4*6H2O are needed to prepare 200*10^2 mL of a 3.5*10^-2 M NiSO4 solution?
February 15, 2011 by Mattie

chemistry
How many grams of sodium hydroxide are required to prepare 500 mL of 0.500 M NaOH?
February 22, 2011 by Maddy

Chemistry
How many grams of MgCl2 are required to make 350mL of a 0.56M solution of MgCl2?
February 28, 2011 by Jose

science
There are 150 grams of water in a beaker. If the water freezes,what is the massof the ice?
March 12, 2011 by elsie velasquez

chemistry
What is my theoretical yield of iron II chloride if I start with 34 grams of iron II bromide?
March 13, 2011 by Allie

Chemistry
How many grams of copper are produced when excess aluminum reacts with 11.6g of copper oxide?
April 26, 2011 by Melissa

science
how would you measure out 25 grams of sodium chloride for a science experiment?
June 2, 2011 by ted

chemistry
How many grams of HCl must be added to make 1 liter of a 2.0 M HCl solution
June 23, 2011 by Chris

chemistry
how many grams of sodium chloride are produced if 25.00 mol of sodium hydroxide are used
June 29, 2011 by mauricio

Chemistry
determine the number of grams of KCl salt contained in 1.25L of a 5.00%(W/V) KCl(aq)
July 18, 2011 by Lori

Chemistry 101 college
How many grams of chloride ions are in a 2.5L of a 1.0 M calcium chloride solution?
July 19, 2011 by Katie

Chemistry
how many grams of sucrose are needed to make 100 ml of a 10^-2 Molarity sucrose solution?
August 28, 2011 by Ty

CHEMISTRY
WHAT IS THE MASS IN GRAMS OF AMMONIA PRODUCED WHEN 280G NITROGEN REACTS TO FROM AMMONIA
September 26, 2011 by TROUBLED

chemmmistry
vitamin c has a density of 1.65 grams per cm^3. what is the volume (in cm^3) of a 500mg tablet of vitamin c ?
September 27, 2011 by lean- help

chemistry
If you wish to produce 100g of Iron Oxide, how many grams of Iron will you need?
October 6, 2011 by Anonymous

chemistry
Sample of 10.7 g of CO reacts completely with O2 to form CO2. How many grams of CO2 will be formed?
October 9, 2011 by Zander

chemistry
Calculate the number of grams of CO2 is produced from 58.0g of glucose? ______g. CO2
October 17, 2011 by Ginger

chemistry
How many more grams of Li SO4 can you dissolve in 250g of water at 10.0 degrees C than at 50 degrees C.
November 21, 2011 by John

chemistry
How many grams of LiOH would be needed to make a 500.0 mL of 0.340 M LiOH?
November 26, 2011 by Lauren

Chemistry
How many grams of chlorine are needed to make 5.00 X 10^6 g of a solution that is 1.50 ppm chlorine by mass?
December 5, 2011 by Sam

Chemistry
How many grams of NH4Cl do I have to add to 500 mL of 0.100 M NH4OH to have a pH of 9.40? Kb= 1.8 x 10^-5 [OH-]= 2.51 x^-5 M
February 8, 2012 by Sandra T.

more math needed
You have a 70% dextrose solution. How many grams of dextrose are in 400ml?
February 24, 2012 by Vicki

Gen. Chem 1
The density of 18% nh4cl is 1.05 grams/ml. What mass of nh4cl is in 425 ml of the solution?
March 19, 2012 by Zack

Chemistry
What is the solubility in grams per liter of SrSO4, in 0.23 M Na2SO4? Ksp for SrSO4 = 2.5E-7
March 20, 2012 by S

chemistry
How many grams of carbon can be burned in 15 dm3 of oxygen and many dm3 of CO2 is produced?
April 17, 2012 by Allen

scince,chemistry
How grams of NACL are present in a 250-g solution containing 9% NACL?
June 24, 2012 by sharlyn baquita

Chemistry
How many grams of Calcium Chloride will be produce when 25 g of Calcium carbonate combine with 12 g of HCl
July 14, 2012 by Ja'Lon

Chemistry
To make some solution 500mL H2SO4 0.3 M. How many grams of H2SO4 are used?
July 31, 2012 by Natya

chemistry
How many grams of HCL must be added to make 1 liter of a 2.0 M HCl solution?
September 27, 2012 by Rachael

chemistry
How many grams of HCL must be added to make 1 liter of a 2.0 M HCl solution?
September 27, 2012 by Rachael

science
If wood weights 18 grams with a density of 0.5 what is the volume ans what type of wood is it
October 17, 2012 by Anonymous

Physics
How many calories will take to convert 5 grams of 90C degree water to 0 C degree?
October 22, 2012 by Cesar

chem
How many grams of KBR, could be recovered by evaporating 650 g of a 15.0% KBr solution of dryness?
November 21, 2012 by tracy

math
A package of spaghetti weighs 266 grams. How many ounces does the package weigh? 1 oz = 28 g
November 21, 2012 by tristan

Chemistry
How many grams of CuCl2 are required to prepare 1270. g of a 1.75% (by mass) CuCl2 solution?
December 2, 2012 by John

nursing
500 grams of sugar occupies a volume of 0.315 L. what is the density of the sugar in g/mL?
January 17, 2013 by jasmin

Chemistry
How many grams of AgNO3 (silver nitrate) are contained in 425 mL of a .15 M solution of AgNO3?
January 29, 2013 by Jessica

Chemisty
Determine how many calories are need to heat 30 grams of water from 10 degrees C to 30 degrees C
January 30, 2013 by Ali

Chemistry
What is the largest amount of H2O in grams that can be formed when 6.10 g of H2 reacts with 6.10 g of O2, based on 2 H2 + O2 = 2 H2O
January 31, 2013 by Thad

Chemistry
How many grams of NH4Br(Molar Mass=98g)are in 440.0 mL of 1.75Moles NH4Br
March 7, 2013 by Chris

chemistry
determine how many grams of N2 are produced by 9.12 g of H2O2 and 6.90 g of N2H4. 2H2O2+N2H4= 4H2O+N2
April 1, 2013 by lee

Math
There are 12 peaches in a carton. The mean mass is 175 grams. What is the total mass?
April 17, 2013 by Antonio

Chemistry
Calculate the mass (in grams) of sugar, C12H22O11, in 166.4 mL of a 1.79 M solution of sugar.
July 19, 2013 by Leigh

Chemistry
2 NaN3(s) = 2 Na(l) + 3 N2(g) How many grams of NaN3 are needed to produce 20L of N2(g) at 303K and 776mmHg?
September 24, 2013 by Nancy

Chemistry
In the equation N2 + 2 O2 → 2 NO2, 14 g of nitrogen can produce how many grams of nitrogen dioxide?
October 16, 2013 by Kellie

Chemistry
Calculate the number of grams of xenon in 3.566 g of the compound xenon tetrafluoride.
February 5, 2014 by Chemistry

Chemistry
Calculate the number of grams of xenon in 3.566 g of the compound xenon tetrafluoride.
February 5, 2014 by Chemistry

Chemistry
9. A solution has 48 grams of LiOH dissovled In 100 L of water. What is its [OH-]? 10. What is the pH of the solution in question 9?
February 26, 2014 by Emma

chemistry
in the reaction Al2O3= Al+O2 if 742.5 grams of Al2O3 are used how many mols of Al will be produced?
April 17, 2014 by Jake

chemistry
how many grams of zinc chloride could be formed from the reaction of 3.57 g of zinc with excess HCL
October 5, 2014 by Anonymous

Chemistry
There are 3.20e22 atoms of copper in the outer shell of pennies. How many grams of copper is this?
October 24, 2014 by Anon-mouse

Chemistry
Calculate the equilibrium concentration of each compound if 0.340 moles of HI are placed in a 5.90 liter container at 520°C. Kc = 0.170 for the reaction at this temperature. soo i tried doing this by setting up an ICE table and finding what x equaled buuuut it didnt work.. ...
May 10, 2009 by Michael

AP Chem
NH3 + CO2 + H2O are introduced into an empty 1.00L vessel at 115 degrees. The initial partial pressure of at .500 atm. Calculate the number of moles of of solid (NH4)2CO3 that is present when equilibrium is established?
October 28, 2014 by Megan

Chemistry
If the density of mercury is 13.6 g/ml, what is the mass of 3.0 liters of mercury in: Grams? Pounds?
September 13, 2007 by Ayeisha

Chemistry
How many joules are needed to heat 8.50 grams of ice from -10.0 degrees C to 25.0 degrees C?
December 24, 2007 by Lucy

chem
how many grams of zinc oxide are needed to produce 12 mol of zinc?
May 27, 2008 by Anonymous

Math/Chemistry
The density of water i 1.00 g/cm^3. Express this density in lb/ft^3. (1 lb = 454 grams)
September 22, 2008 by Claire

science
a block of wood 3.0 cm on each side has a mass of 27 grams what is the density of this block thanks
September 1, 2009 by shearika

chemistry
How many grams of NaCl do you have if you have 2.30 x 10 to the 23rd olecules of salt?
January 12, 2010 by Jason

CHEM 1LB
how many grams of KIO3 are needed to make 50.0 mL of a 1.2 M KIO3 solution
January 17, 2010 by Anonymous

chemistry
how many grams of magnesium is needed to produce 2.154g of magnesium nitrate?
March 1, 2010 by Rachel

chemistry
if you started with 2.154g of aluminum, how many grams of aluminum oxide would you get?
March 1, 2010 by Rachel

chemistry
For the reaction: Mg + 2 HCl => MgCl2 + H2 a) How many grams of HCl are required to react with 62.0 g of Mg?
March 11, 2010 by Stacie

chemistry
what mass of a 15% (m/m) NaOH solution contains 125 grams NaOH?
August 19, 2010 by Anonymous

college
lead has density of 11.35g/ml,i have 3.45 cc of lead what is the weight in grams.
August 31, 2010 by mark

chemistry
how many grams of NaOH do you need to prepare a 3.00 x 10^2 mL stock solution of 2.00 M NaOH
October 7, 2010 by jane

Chemistry
How many grams of NaBr are contained in 85.0 mL of a 2.10 M NaBr solution? I'm not sure how to go about this..
December 1, 2010 by Roxie

chem
An unknown metal has a volume of 5.25 mL and a density 2.71 g/mL. What is the weight of the metal in grams?
December 4, 2010 by Ivy

Chemistry 1
What mass of potassium oxide is produced by the oxidation of 5 grams of potassium?
December 12, 2010 by Cassandra

chemistry
If you have 25 liters of carbon dioxide at STP, how many grams of it do you have?
January 11, 2011 by DIANA

chemistry
How many grams of oxygen gas are reacted if 75 g of hydrogen gas is consumed?
January 13, 2011 by Hannah

chemistry
Calculate the volkume of 0.750 M KNO3 that contains 17.0 grams of KNO3?
February 22, 2011 by Maddy

chemistry
If we have 0.128 grams of copper (ll) sukfate how many molecules do we have?
February 22, 2011 by Bryce

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