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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 (Check)
Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...

Chemistry (Check)
Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...

Chemistry
Use the equation for the synthesis of hydrogen to answer the following. 10 points. C (s) + H2O (l) -> CO (g) + H2 (g) deltaH = + 31.3 kcal/mol carbon deltaS = +32 cal/(mol•K) Calculate the energy change (deltaH) when 5.00 g of carbon is consumed. Calculate the energy ...

English
Need to label the verb wish A for action of L for Linking... 1. The koala bears have climbed the tree. Answer=A 2. The peacock seemed more beautiful than before. Answer=A 3. In the rain forest display at the zoo, the birds looked stange and exotic. Answer=L 4. The goats in the...

Chemistry
there are ___ molecules of methane (CH4) in 0.123 moles of methane? a. 16 b. 0.773 c. 2.46 x 10 -2 d. 7.40 x 10 22 e. 6.02 x 10 23

11th grade
A diamond contains 0.090 moles of carbon what is the mass of the diamond

Chemistry
How do you find the moles of excess reactant? I already know the limiting reactant btw.

CHEMISTRY
How many moles of methanoic acid you have in a 25g sample of ethanoic acid

east nobel
a certain gas has a volume of 565 mL at 25 0C and 715 mm Hg.how many moles of gas are there?

chemistry
You have a sample of magnesium chloride. If there are 3.90 mol of Cl, how many moles of magnesium atoms are there?

chemistry
calculate the moles of aluminum ions present in 250.0 g of aluminum oxide??

chemistry
How many moles of water are produced from the combustion of 3.5 mol of hydrogen and 5.2 mol of oxygen?

chemistry
How many moles of water are produced from the combustion of 3.5 mol of hydrogen and 5.2 mol of oxygen?

chemistry
how many moles of water are produced from the combustion of 3.5 mol of hydrogen and 5.2 mol of oxygen

chemistry
what volume of carbon dixoide (CO2) will be produced if 2.90 moles of iron (Fe) is produced

Chemisrty
Calculate the moles of aluminum ions present in 250.0 g aluminum oxide

Chemistry
Calculate the moles of aluminum ions present in 250.0 g aluminum oxide

chemistry
How many moles of lilthium chloride are dissolved in 3.00 L of a 0.200 M solution of lithium chloride?

Chemistry
How many moles of H2 can be produced from 7.74g SrH2? equation:SrH2 + 2H2O = Sr(OH)2 + 2H2

Chemistry
What is the number of moles in 1.00 L at -7°C and 725 torr. Remember 1atm = 760 torr?

chemistry
how many moles of Cu are there in the sample of CuO if sample weighting 0.5424g contains 0.4831g Cu

chemistry
a compound contains 2.65g C and 0.667g H .How many moles of each element are present in this compound?

chemistry
how many moles of gas are contained in a 50.0L cylinder at a pressure of 100.0 atm and a pressure of 35 C?

Science
How many moles of H2(g) will be formed in the reaction between 0.99 mol CaH2}(s) and 1.32 mol H2O(l)?

science(chem)
How many moles of sulfate ions are present in 1.2 mol of aluminum sulfate?

Chemistry
How many moles of calcium chloride hexahydrate will be produced from 4.00 mol calcium carbonate?

chemistry
How many moles of ions (cations and anions) are contained in 1.2 L of a 1.9 M solution of KCl? KCl K+ + Cl-)

Chemistry 3A
a quantity of oxygen occupies a volume of 19.2L at STP. How many moles of oxygen are present?

chemistry
how many moles of NaCl are in a box of salt containing 425g NaCl (g/mol)

science
How many moles of sucrose C12H22O11 does 300 mL of a .10M sucrose solution contain?

physical chemistry
if the atomic mass of sodium is 23u the no. of moles in 46g of sodium is:

Chemistry
If 1.5g of CaO is mixed with 2.5M HNO3 how many moles of CaO were reacted and what type of reaction is this ?

chemistry
Consider the equation: N2 + 3 H2 =>2 NH3. How many moles of NH3 will be made from 2.1 x 1024 molecules of N2?

science
H2SO4 is labeled 93.2% and density 1.94g/cm3. Find moles in H2SO4?

Chemistry
How many moles of silver will be deposited from a silver (i) trioxonitrate (v) solution by 16.0g of copper (Ag=108,Cu=63.5)

Chem
When 4.5 mol Al reacts with 11.5 mol HCl,what is the limiting reactant, and how many moles of H2 can be formed?

Chemistry
How many moles of chloride ions are in 0.04dm^3 of 0.45M calcium chloride CaCl2

Chem
How many carbon atoms are contained in each of the following number of moles: (a) 1.40 mol; (b) 5.70 mol?

Chemistry
How many moles of magnesium nitride form when 1.0 mole of magnesium reacts completely?

Language Arts
Okay, here is my outline. Do you have any suggestions? Is it okay? I haven't done many of these before. Eighth grade, btw, if it makes any difference in judging or anything. I: Thesis: Despite the fanciful legends, Blackbeard was truly the fiercest and most known pirate that ...

chemistry
A sample of MgCO3 has a mass of 17.695 g. How many moles does the sample contain?

Stoichiometry
6 NaOH + 2 Al ---> 2 Na3AlO3 + 3 H2 How many moles of NaOH are required to produce 3 g of hydrogen?

Chemistry
how many moles of silver are contained in 1.00 kg of silver, can you show me the set up for the problem

chemistry
How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?

chemistry
How many moles of TiCl4 can be produced when 9.00 mol Ti react with 4.00 mol Cl2?

chemistry
How many moles of CH3CH2OH are contained in 657 mL of 0.0788 M CH3CH2OH solution?

Chemistry!!!
Is the molarity of a solution that contains 6 moles of solute in 2 liters of solution 12 M????

chemistry
How many moles of solute are contained in a 150ml solution of a 0.25 M NaNO3 solution?

Chemistry
How many moles of Mg2+ and NO3- form for each mole of Mg(NO3)2 that dissolves?

chemistry
how many moles of sucrose C12H22O11 does 300mL of a 0.10 M sucrose solution contain?

chemestry
what is the molarity of a solution made by dissolving 3.86 moles of NaCl in 2.50 L of solution?

Chem.
what is the volume of 4 moles of a gas if the pressure is 3.5 atm and the pressure is 25C

chemistry
If you have 2 moles of glucose in 8 liters of solution, what is the molarfity of this solution?

Chemistry
How many moles of H2SO4 are required to react with 50 mL of NaOH solution? NaOH is 1M.

science
A sample containing .347 moles of an element has a mass of 39.00 g. What is the element?

chemistry
how many moles of NaCl are in a box of salt containing 425g NaCl

Chemistry
How many moles of KF are contained in 244 mL of 0.135 m KF solution? The density of the solution is 1.22 g/mL.

chemistry
from 200 mg of CO2, 10^21 molecules are removed. how many moles of CO2 are left?

chemistry
the density of liquid mercury is 13.6 g/cm^3. how many moles of mercury are there in 1 litre of the metal?

chemistry
how many moles of potassium sulfate are produced for each mole of potassium nitrate?

chemistry
If you have 0.833g of copper(II) sulfate, how many moles doo you have?

chemistry
caculate the number of moles of magnesium ions in 5.5g magnesium phosphate

chemistry
How many moles of magnesium are needed to react with 16 g of O2? 2 MgO (s) + O2 (g) → 2 MgO (s)

chemistry
How many moles of magnesium are needed to react with 16 g of O2? 2 MgO (s) + O2 (g) → 2 MgO (s)

CHEMISTRY
How many moles of magnesium are needed to react with 16 g of O2? 2 MgO (s) + O2 (g) → 2 MgO (s)

CHEM
How many moles of magnesium are needed to react with 16 g of O2? 2 MgO (s) + O2 (g) → 2 MgO (s)

chemsitry
How many moles of silver chromate will be produced from 146 g of silver nitrate?

Science
What is the number of moles of HCl neutralized by .1 M NaOH. When NaOH has 14.24ml

Chemistry 151
How many moles of chloride ions are in 0.2580 g of aluminum chloride?

science
A student mixed 1.5g of CaO with 2.5M HNO3. How many moles of CaO were reacted

Chemistry
If 0.30 mol N2H4 is reacted with 0.50 mol N2O4, how many moles of N2 can be formed?

biochem'
A flask contains 300 ml of 0.4M NaCl. ¿How many moles of NaCl are in 15ml?

Chemistry
Calculate the number of moles Fe2O3 in 2.37x10^21 atoms of Fe2O3?

Chemistry
What volume of 0.123M NaOH contains 0.025 moles of NaOH?

Chemistry
How many potassium ions are present in the following: 1) 3 moles of potassium chloride.

world geography
1. The natural vegetation regions of sub-Saharan Africa A. are heavily impacted by human activity. B. don't correspond closely to climatic regions. C. only correspond to climatic conditions in areas of West Africa. D. are all characteristic of equatorial latitudes. 2. ...

Chemistry
How many liters of stomach acid (pH = 4.000) will be neutralized by a 1.50 g tablet of "Bicar", a commercial tablet which is 50% flavored and 50% NaHCO3? Note that: NaHCO3(s) --> Na+(aq) + HCO3-(aq) and: H+(aq) + HCO3-(aq) --> H20(l) + CO2(g) So far I've determined that ...

drbob222 math,correction
i made some corrections for the previous postage can you check those when you get a chance please. Also for this one: my options of answers are: A)2y + 6/3 B)3x- 6 /2 C)2 + 2y D)2/3y + 6 Directions: Solve for x: 3x - 2y =6 3x - 2y = 6 +2y +2y 3x = 6 +2y -- ------ 3 3 so my ...

Science
The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh

chemistry
when 0.50 L of a 1.0 M solution of Pb (No3)2 is mixed with 0.50 L of a 1.0 M solution of KI, how many moles of lead (III) iodide are formed?

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

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