426 Answered Questions for the topic stoichiometry

Stoichiometry

02/02/20

What is the mass in gram of 4.65×10^22 molecules of P4O10. How many phosphorus atoms are present
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Stoichiometry

01/14/20

Need help! Standard enthalpy change for balanced reactions
Decomposition of hydrogen peroxide is exothermic with (change in enthalpy= 192kj). Im asking for help on how to calculate how much heat energy will be released when 3.5 grams of Hydrogen peroxide... more
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12/17/19

Chemistry Honors Help? (stoichiometry)
7) How many moles of nitric oxide, NO, are formed when 1.2 mol of nitrogen dioxide, NO2, reacts with excess water?3NO2 (g) + H2O (l) --> 2HNO3 (aq) + NO (g)82) If 60 grams of NO and 60 grams of... more
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Stoichiometry

11/17/19

Calculate the mass of water produced. Show your work. [H = 1.008, O = 16.00]

- When ethene, C2H4 (g), is completely combusted, carbon dioxide, CO2(g), and water vapor, H2O(g), are produced according to the following balanced equation: C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2... more
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Stoichiometry Chemistry

11/17/19

Calculate the volume of ethene reacted. Show your work.
When ethene, C2H4 (g), is completely combusted, carbon dioxide, CO2(g), and water vapor, H2O(g), are produced according to the following balanced equation: C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2... more
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Stoichiometry

11/17/19

Calculate the volume of oxygen needed for complete combustion of ethene. Show your work.

When ethene, C2H4 (g), is completely combusted, carbon dioxide, CO2(g), and water vapor, H2O(g), are produced according to the following balanced equation: C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2... more
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Stoichiometry Chemistry

11/17/19

If 1.4 L of nitrogen reacted, calculate the volume of hydrogen gas needed to react. Show your work.
ogen gas reacts with hydrogen gas to form ammonia according to the equation: N2 (g) + 3 H2 (g) → 2 NH3 (g)
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Stoichiometry Chemistry

11/15/19

Sodium oxalate and Potassium Permanganate reaction stoichiometry
An impure sample of sodium oxalate weighing 1.557 g required 27.59 mL of 0.0978 M potassium permanganate for complete reaction according to the following reaction:5Na2C2O4 + 2KMnO4 + 8H2SO4 =... more
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Stoichiometry Chemistry

11/06/19

Stoichiometry, Chemistry

How many moles of NH3 can be produced from 12.0 mol of H2 and excess N2?
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10/31/19

Double Displacement Reaction Calculations
In our lab we completed conductometric titrations of FeCl3·6H2O + NaOH and CuCl2·2H2O + NaOH.My question that has two parts:1- If you could manipulate individual molecules and knew that you had 36... more
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Stoichiometry Chemistry

10/21/19

Determining Order given initial rates
Dibromoethane and potassium iodide react in methanol (the solvent) according to the equation: C2H4Br2 + 3KI → C2H4 + 2KBr + KI3 The initial rate of this reaction was determined in a series of... more
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10/15/19

Help! Chemistry Stoichiometry Question
I figured out how to balance this equation, and I think I figured out the answer to question number 1 for mass (I got 33.2 g of sodium carbonate), but how do you find the ions that are not... more
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Stoichiometry Chemistry

08/16/19

Given the following reaction, Cr(OH)3 + NaOH = NaCrO2 + 2H2O , how many grams of NaCrO2 can be produced from 83.3 g of Cr(OH)3?
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Stoichiometry Chemistry

05/31/19

Stoichiometry Question
Titanium is a strong, lightweight, corrosion-resistant metal that is used in rockets, aircraft, jet engines, and bicycle frames. It is prepared by the reaction of titanium(IV) chloride with molten... more
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Stoichiometry Math Chemistry

05/31/19

CHEMISTRY PROBLEM! NEED HELP AND WORK SHOWN!
Ammonia can be produced through the Haber process shown in the chemical reaction below. The reaction is known to have a percent yield of 55.1% because it is an equilibrium reaction. How much of... more
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Stoichiometry Chemistry

05/31/19

Chemistry Stiochemistry
Bromine can be prepared by adding chlorine to an aqueous solution of sodium bromide. How many grams of bromine are formed if 25.g of sodium bromide and 25.0g of chlorine reacted?Is this the right... more
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Stoichiometry Chemistry

05/30/19

What is the molarity? stoichiometry
If 525ml of 0.80mol/L HCL(aq) solution is neutralized with 315ml of Sr(OH)2(aq) solution what is the molarity of the Sr(OH)2(aq)?
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Stoichiometry Chemistry

05/30/19

Stoichiometry Question

During the combustion of methane, what mass of carbon dioxide will be produced when 15.0g of CH4(g) and 30.0(g) of O2(g) are available for reaction? If 17.55g of carbon dioxide was obtained during... more
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Stoichiometry Chemistry

05/29/19

How many moles of CO2 are present in the flask after 4mL of HCl have been added? What is the stoichiometric ratio between HCl and CO2?
Flask is 150 mL. P=1.81 atm. Gas volume=135.9 ml. Liquid volume=14.1mL. Initial pressure = 1 atm and initial temperature is 21.5 C I need help with putting this into an equation and writing the... more
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05/28/19

Ca(OH)2+H2SO4=>CaSO4+H2O. 100g of sulfuric acid is reacted with 78g of calcium hydroxide. Limiting reactant, theoretical yield+% yield of H2O produced by the reactant if actual yield is 34g of H2O?
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Stoichiometry Chemistry

05/25/19

Stoichiometry problems
H2SO4 + 2NaOH -> Na2SO4 + 2H2Oa) what mass of H2SO4 would be required to react with 1.50 moles of NaHOb) if 60.0g of H2SO4 reacts with sodium hydroxide, what mass of water is produced
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Stoichiometry Chemistry

05/23/19

How to predict mass of product?
If 250.3 L of hydrogen gas (d=0.0899 g/L) reacts with an excess amount of nitrogen gas, what mass of ammonia would be produced? I’ve gone through all of the assigned reading for this module and how... more
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Stoichiometry Chemistry

05/23/19

Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g) how many moles of Al are there?
Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g) how many moles of Mg are there? How many moles of aluminum is there?
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Stoichiometry Chemistry

05/19/19

Calculate the mass of NH3 produced by the reaction of 56 g of N2 with H2
NH3N2H2
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Stoichiometry Chemistry

05/16/19

Stoichiometry volume-volume
What volume in l of carbon monoxide will be required will be required to produce 18.9 l of nitrogen?
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