308 Answered Questions for the topic stoichiometry

Stoichiometry

02/16/16

Stoichiometry of gases 3 questions

5. How many grams of water can be produced from the complete reaction of 3.44 L of oxygen gas, at STP, with hydrogen gas?   6. How many liters of gaseous carbon monoxide at 27°C and 0.247 atm can... more
Stoichiometry

02/16/16

Stoichiometry of gases

1. Propane, C3H8, is a gas that is sometimes used as a fuel for cooking and heating. The complete combustion of propane occurs according to the following equation.C3H8(g) + 5O2(g) → 3CO2(g) +... more
Stoichiometry

02/15/16

stoichomtryof gases

5. What mass of sulfur must be used to produce 12.61 L of gaseous sulfur dioxide at STP according to the following equation?S8(s) + 8O2(g) ? 8SO2(g)
Stoichiometry

02/15/16

stoichiometry of gases

4. How many grams of calcium carbonate must be decomposed to produce 5.00 L of carbon dioxide gas at STP?
Stoichiometry

02/15/16

Stoichiometry of Gases

2. What volume of oxygen gas is needed to react completely with 0.626 L of carbon monoxide gas, CO, to form gaseous carbon dioxide? Assume all volume measurements are made at the same temperature... more
Stoichiometry Chemistry

02/12/16

stoichiometry question

A 1.81g sample of ZnS was reacted with 25.0 mL of a nitric acid solution that had a concentration of 0.836 mol/L. One of the products of this reaction is Sulphur. It was collected at the end of the... more
Stoichiometry Chemistry

02/11/16

grade 12 University level Chemistry

When a sample of a compound, XZO3 (s), is strongly heated, 3.469 g of oxygen gas and 4.225 g of XZ(s) are formed. When all of the XZ(s) was mixed with AgNO3 solution in a second reaction, all of... more
Stoichiometry Chemistry

02/11/16

grade 12 university chemistry question

A 1.81g sample of ZnS was reacted with 25.0 mL of a nitric acid solution that had a concentration of 0.836 mol/L. One of the products of this reaction is Sulphur. It was collected at the end of the... more
Stoichiometry

01/31/16

How do I figure out how many miles of CO are needed to react with 48.5 grams of Fe2O3?

how do I calculate how many miles of CO are needed to react with 48.5 grams of Fe2O3?

01/13/16

How many grams are formed?

Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 25.9 g of Fe reacts completely with oxygen? 4Fe(s) + 3 O2(g) → 2Fe2O3(s)  a.12.0... more
Stoichiometry Chemistry

01/13/16

How many moles?

How many moles of aluminum are needed to react with 2.7 mol of FeO ? 2Al(s) + 3FeO(s) → 3Fe(s) +Al2O3(s)  a.1.8 molb.2.1 molc.2.7 mold.5.4 mol
Stoichiometry Chemistry Mole Concept

01/01/16

what is the amount of heat evolved when 1 mole of strong acid is completely neutralized with 1 mole of strong base?

what is the amount of heat evolved when 1 mole of strong acid is completely neutralized with 1 mole of strong base?
Stoichiometry Ap Chemistry

11/04/15

Stoichiometry

42g of aluminum perchlorate are reacted with 75g of sodium thiocyanate. 1)What is the mass of the precipitate? 2)What are the espectator ions, and how many individual ions are there?  

10/15/15

Enthalpty stoichiometry problem?? PLEASE help??!!

The value of H for the reaction below is -72 kJ. _______kJ of heat are released when 1.0 mol of HBr is formed in this reaction. H2 (g) + Br2(g) => 2HBr (g) I tried to solve it.. 1.0 mol HBr (-72... more

10/10/15

Can you help me with this volumetric stoichiometry problem?

How many grams of chlorine has would be produced is 250 mL of 2.00M HCl was mixed with an excess of bleach, according to the equation below?    NaClO (aq) + HCl (aq) => Cl2 (g) + NaOH... more

A sample of nitrogen gas, N2, contains 1.33 x 10 ^24 total atoms of nitrogen, N. How many moles of nitrogen molecules are present?

Can you please show your work? I keep trying a variety of different conversions, but I don't really even know where to start and how to get the correct answer. I would greatly appreciate any help -... more
Stoichiometry

05/21/15

Stoichiometry help find Molarity of NaOH

you are reacting a 1M HCl solution with a sodium hydroxide solution of unknown concentration. if it takes 20.0 ml of the acid solution to react with 35 ml of the NaOH solution, what is the molarity... more
Stoichiometry

05/21/15

if 34.19 grams of sodium chloride reacts with excess silver nitrate, how many grams of silver chloride can be produced?

I need the balanced equation and type of reactio. Showing all work 
Stoichiometry College Chemistry

03/17/15

AgNO3(aq)+KCl(aq)?AgCl(s)+KNO3(aq)

Part AWhat mass of silver chloride can be produced from 1.19L of a 0.293M solution of silver nitrate?Express your answer with the appropriate units.mass of AgCl =Part BThe reaction described in... more
Stoichiometry

02/12/15

How many grams of water can be produced by the reaction of 2.16 mol C2H2 with 7.40 mol of oxygen gas?

The heat from an acetylene torch is produced by burning acetylene (C2H2) in oxygen:2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g)How many grams of water can be produced by the reaction of 2.16 mol C2H2... more
Stoichiometry

11/25/14

In the reaction: 2PbCl2+ O2 -----> 2PbO + 2Cl2, how many grams of PbO are produced when 4.5 moles of PbCl2 are reacted with excess oxygen?

Chemistry practice problem. Would like to know if I am right so far.

How many grams of Lithium Nitrate are needed to make 250 grams of Lithium Sulfate?

Could someone please look over my work?  I had to research Stoichiometry as a self-study and I'm not sure if I'm on the right track.   The question is: How many grams of Lithium Nitrate are... more
Stoichiometry Chemistry

11/07/14

how many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sufuric acid

I had this problem explained to me, I followed the instructions and I'm now checking for comprehension.   If someone could look this over and give me feedback it would be great.  One of the... more
Stoichiometry Chemistry

11/07/14

Why are we multiplying by eleven or why are we not multiplying 4.5 moles of heptane by 22??

Original question: In a particular reaction, 4.5 moles of heptane burn in the presence of oxygen. C7H16 + 11O2 -> 7CO2 + 8H2O How many moles of oxygen will burn?Answer:You have 4.5 moles of... more
Stoichiometry Chemistry

11/07/14

How many moles of oxygen will burn?

In a particular reaction, 4.5 moles of heptane burn in the presence of oxygen.   C7H16 + 11O2 -> 7CO2 + 8H2O How many moles of oxygen will burn?   REACTANTS: Carbon: 7 Hydrogen:... more

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