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

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Chemistry
A sample of oxygen gas has a volume of 8.00 L at 20.0 ° C and 700. torr. How many moles does the sample contain?

Chemistry
A sample of oxygen gas has a volume of 8.00 L at 20.0 ° C and 700. torr. How many moles does the sample contain?

Chemistry
A sample of oxygen gas has a volume of 8.00 L at 20.0 ° C and 700. torr. How many moles does the sample contain?

Chemistry
If you had excess aluminum, how many moles of aluminum chloride could be produced from 32.0 g of chlorine gas?

chemistry
Calculate the moles of Cl atoms in 0.0565g of C2H4CL2 i got 6.87 x 10^20 mol Cl atoms <-- is that right?

chemistry
Calculate the moles of Cl atoms in 0.0565g of C2H4CL2 i got 6.87 x 10^20 mol Cl atoms <-- is that right?

chemistry
what is the volume of 4.4 moles of Cl2 at 285 kelvin and 0.87 atm. (R=0.0821 k*atm/mol*k)

Chemistry
How many Silver Coins (weighing 26g each) would it take to provide 5 moles of Silver (Ag)?

Biochem
How many silver coins (weighing 26g each) would it take to provide 5 moles of silver(Ag).

chemistry (please help)
How many liters of .0020 M iodine solution can be made from .050 moles of iodine (I2)?

chemistry
Ti(s)+2Cl2(s)-TiCl4(s) compute theoretical yield in moles 8 mol Ti, 8 mol Cl2

chemistry
When 26 mL of a 120 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F- are in the new solution

chemistry
When 26 mL of a 120 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F- are in the new solution

chemistry 211 Lamar Univ
Calculate the number of SO_2 molecules in 9.19 moles of SO_2

chemistry
how many silver coins weighing 26g each would take to provide 5 moles of silver

Chemistry 3A
a titration required 18.38mL of 0.1574 M NaOH solution. how many moles of NaOH were in this volume?

Chemistry 3A
compute the molarity of a solution consisting of 2.0 moles of calcium chloride in 500mL of solution.

Chemistry
The formula for ibuprofen is C13H18O2. How many moles of ibuprofen are present in a 200.0mg tablet.

chemistry
How many moles of water will produced at equilibrium be if there is 1.0 mole of carbon dioxide formed at equilibrium?

chemistry
how many moles of sand were reacted when you process 100 g of sand and produce 51.4 g of silicon carbide

Chemistry
How many moles of silver will be deposited from a silver(i)trioxonitrate(v)solution by 16g of copper (Ag=108, Cu=64).

Chemistry
If 4.5 moles of elemental carbon react, what volume of carbon dioxide will be produced at STP?

Chemistry
Calculate the concentrations of Cd+2 , Cd(CN)4^-2 and CN at equilibrium when dissolvs 0.42 moles of Cd(NO3)2 (2.50 mol/L) Kf for Cd(NO3)2 = 7,1x10^16.

chemistry
Arrange the following in decreasing order of their massess . a. 2.5 moles of water. b. 3.012×10×24 c. 25 g of water

college resume
Is there any way to edit or improve this? Community Service Description Grades(s) Hrs/wk wk/yr BuildOn Raised $2,000 through active fundraising and community service, donated all funds to Malawi, lived with a host 10 56 4 family for a week to fully ascertain their lifestyle, ...

English
Choose the contraction in parentheses ( ) that correctly completes the sentence . 1/ She (don't, doesn't) know what to expect in the United States . Answer: doesn't 2/ Fortunatley, her aunt and uncle ( haven't, didn't) forgotten to meet her plane. Answer: didn't 3/ ( Didn't, ...

Precalculus
Find the roots of the following quadratic equations by factoring. y=x^2+9x-36 I got (x+12)(x-3) but on the answer key it says that the answer is this, however it renames the x values with opposite values. For example, the answer on the review for it has my answer, but the ...

French continued
Could you please check these to thanks! Directions: Complete the names of these dishes you have for lunch using à, au, aux. 1. une soupe ------- oignon. Answer: à l' 2. un sandwich -------- jambon. Answer: au 3. un sandwich ------- fromage. Answer: au 4. une omelette...

chemistry-Dr BOB
Hi Dr. Bob, I first want to tank you for all your help. Secondly, I don't understand why this was marked wrong. When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this ...

chem lab (webwork)
Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. independent of the chemical identity of the solute. C. responsible for lowering the vapor pressure of a solution versus the vapor pressure...

chem
a 22.5g sample of (NH4)2CO3 (ammonium carbonate) contains _____ moles of ammonium ions?

chemistry
what mass of NaOH would be dissolved in 1dm3 of water to obtain 0.5 moles of the NaOH solution

Chemistry-Equation
How many moles of H3PO4 are produced when 142.0 g P4O10 reacts completely to form H3PO4?

chemistry
how do you find the moles of solute and the molarity if the molar mas is 98.07, mass of solute is 62.0, and the volume of solution is 1.00?

chemistry
Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?

Chemistry
Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?

Chemistry
If 3.2 moles of NaCl are dissolved in enough water to make a 0.98-liter solution, what is the molarity of the solution?

CHEM 112
A buffer solution is 1.40 M in NH3 and 1.00 M in NH4Cl. If 0.100 moles of NaOH are added to 1.00 L of the buffer, what is its pH?

CHEM 112
A buffer solution is 1.40 M in NH3 and 1.00 M in NH4Cl. If 0.100 moles of NaOH are added to 1.00 L of the buffer, what is its pH?

Chemistry
What is the volume of 128 g of Oxygen at STP?... here's my work... O=16 128/16= 8 moles 8(22.4) = 179.2 L Where did i go wrong?

Chemistry - Mole Ratio
How many moles of oxygen are produced from the decomposition of 3.4g of hydrogen peroxide? How many molecules of O2 are produced?

chemistry
How many moles of sodium hydroxide are produced when 0.155 mole of sodium reacts with excess water?

Chemistry 101
75.0 G tartaric acid in 1 liter is what Molarity (moles/liter)? mw=150.087 g/mol

chem 101
75.0 G tartaric acid in 1 liter is what molarity (moles/liter) mw= 150.087g/mol

chemistry
if a total of 18.6 mol of NaHCO3, and 6.2 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?

Chemistry
Calculate the pressure of 0.800 moles of helium gas, when the gas is in a balloon with a volume of 2.30 L at a temperature of 32°C.

chemistry
a gas occupies 37.6 L at 2.00 atm pressure and 27C degrees. how many moles of gas are present in this sample

Chemistry
Convert 6.42x10^23 atoms a pure substance to moles of that substance. That is all it says. Please help. Thank you.

CHEMISTRY
Calculate the maximum work done when two moles of N2 expands isothermally from 10 litres to 20 litres at 25o C

chemistry
A chemist used 500g of glucose(c6H12o6)in a preparation of a drug in the laboratory how many moles was used?

chemistry
You have 14.0mL of a 0.12M NaOH solution. How many moles of HCl will it take to neutralize this solution?

CHEMISTRY
HOW MANY MOLES OF SILVER IODIDE COULD BE PRODUCED IF THIS REACTION WAS STARTED WITH 4.3 MOL IODINE AND AN EXCESS OF SILVER?

CHEMISTRY
HOW MANY MOLES OF SILVER IODIDE COULD BE PRODUCED IF THIS REACTION WAS STARTED WITH 4.3 MOL IODINE AND AN EXCESS OF SILVER?

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.

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?

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

physics
2H2(g)+O2(g)-2H2O(g) Calculate the initial number of moles of oxygen gas and hydrogen gas

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?

science
How many moles of carbon monoxide are needed to react completely with 108 kg of Fe2O3. Fe2O3(s)+CO(g)→Fe(s)+CO2(g)

Chemistry
How many moles of bromine atoms are in 8.0x10^20 bromine molecules?

chemistry
if you have 720 g of the compound CaBr2 how many moles of it do you have

Chemistry
How many moles of ammonium ions are in 0.807 g of ammonium carbonate?

chemistry
How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?

10th grade
how many moles of anhydrous MgSO4 are in 2.04grams of MgSO4

Chemistry
How many moles of HCl are present in a 50mL 3M solution of HCl?

Chemistry
How many moles of HCl are present in a 50mL 3M solution of HCl?

chemistry
A 27-gram sample of water, H2O, is how many moles of water?

Chemstry
How many moles of NaCL are contained in .2570 L of a 37.5 mM Solution of NaCl?

chem
How many moles of glucose (C6H12O6) are in 1.6 liters of a 0.75 M C6H12O6 solution?

chemistry
If you have 4.90 moles of Ba, how many liters of N2 would you have at STP?

science
How many moles of oxygen in a litre of air which has 21% oxygen by volume?

chemistry
How many moles of ammonium ions are in 5.393 g of ammonium carbonate?

Chemistry
How many moles of MgCl2 are present in 5 liters of a 0.12 M MgCl2 solution?

chemistry
How many moles of aluminum do 5.9×1024 aluminum atoms represent?

Chemistry
How many moles of CaCl2 are in 32cm cube of 0.2M solution of CaCl2?

Chemistry
How many moles of NaOH are in 125mL of a 4.00M solution of NaOH?

Chemistry
If 32.6 g of aluminum is produced, how many moles of aluminum nitrate is reacted?

College Chemistry
How many moles of aluminum do 2.66×10^24 aluminum atoms constitute?

physics
suppose that there are 1.9*10^25 stars in the universe. how many moles of stars would this be?

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?

chemistry
0.50 mol of Fe react with 0.60 mol of O2, how many moles of Fe2O3 will form?

Chemistry
Moles of Copper in the original .825g of Copper Oxide

chemistry
You need 2.5 moles of aluminum for an experiment. How many atoms of aluminum is this?

chemistry
what volume of 0.5 BaCl2 is needed to have 0.1 moles of BaCl2?

chemistry-URGENT
how many moles of atoms are contained in 7.654 x 10^32 atoms of Ga ? Thank you!

env.sc.
How many No.of ions of cadmium present in 3n moles of cadmium nitrate

chemistry
how many moles of K2SO4 are present in 111.5 mL of 0.516 M K2SO4?

Chemistry (atoms)
How many atoms of oxygen, O, are in 0.0595 moles of water?

Chemistry
How many hydrogen atoms are present in 6.49 moles of hydrogen molecules

algebra 1
select an appropriate unit from the choices below and connect the rate to that unit. answer a - ft /s answer b - mph answer c - mm/s answer d - km/s question : A car traveling at 36 ft/s

math
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^...

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 ...

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...

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 ...

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...

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...

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^...

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

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

Chemistry
Express each quantity as a mass in grams. a) 3.70mol of H2O b) 8.43 x 10^23 molecules of PbO2

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