418 Answered Questions for the topic stoichiometry

Stoichiometry Chemistry

2d

Mass given % Yield

I am completely lost on this hw so any help would be greatly appreciated. Please and thank you!What mass of aspirin(C9H8O4) is produced from 86.4g of C7H6O3 assuming 95.0% yield from the reaction... more
Stoichiometry Chemistry

5d

How many moles of O2 gas are used to produced 0.75 moles of CO2 @ STP ?

C3H8+5O2=3CO2+H2O__________________________
Stoichiometry Chemistry

5d

How many moles of oxygen of are needed to produced 5.3 moles of aluminum oxide ?

4AL+3O2=2AL2O2 _______________
Stoichiometry Chemistry Percent Yield

17d

Chemistry (Stoichiomitry)

Under certain conditions the reaction of ammonia with excess oxygen will produce 29.5% yield of NO. If the actual yield of NO is 157g, find the theoretical yield
Stoichiometry Chemistry Percent Yield

17d

Chemistry (Stoichiomitry)

Under certain conditions the reaction of ammonia with excess oxygen will produce 29.5% yield of NO. If the actual yield of NO is 157g, find the theoretical yield
Stoichiometry Chemistry

23d

Determine the mass in grams of CO2 that are produced by the complete reaction of 0.05090 moles of C7H8 (toluene) according to the following combustion reaction: C7H8 + 9 O2 -> 7 CO2 + 4 H2O

I'm having issues with stoichiometry problems and have no idea how to complete something like this. Please help
Stoichiometry Chemistry Dumb

25d

Stoich question

In a soda-acid fire extinguisher, concentrated sulfuric acid reacts with sodium hydrogen carbonate to produce carbon dioxide to produce carbon dioxide, sodium sulfate, and water._____H2SO4 +... more
Stoichiometry Chemistry Molar Mass Atoms

04/15/22

How many individual H atoms are in a sample of C2H4Cl2 that also contains 12.1 grams of chlorine?

I really need help with this question. I have no clue how to put it into a formula that I can solve to get the answer.
Stoichiometry Chemistry

04/12/22

equilibrium - stoichiometry problem - chemistry

Initially, a reaction mixture contains stoichiometric amounts of H2 and I2. The reaction mixture initially contains no HI. At a temperature of 160°C, the conversion rate for the next reaction is... more
Stoichiometry Chemistry

03/30/22

NaHCO3 + HC2H3O2 --> NaC2H3O2 + H2O + CO2 If you have exactly 12.2g of baking soda, how much vinegar would you need to add to react all of the baking soda?

NaHCO3 + HC2H3O2 → NaC2H3O2 + H2O +_CO2 If you have exactly 12.2g of baking soda, how much vinegar would you need to add to react all of the baking soda?
Stoichiometry Chemistry

03/30/22

Stoichiometry problem - chemistry

Copper is extracted from chalconite (Cu2S) through the following reactions: reaction a: 2 Cu2S + 3 O2 --> 2 Cu2O + 2 SO2 reaction b: Cu2O + C --> 2 Cu + CO Suppose that 0.15 mol Cu2S,... more
Stoichiometry Chemistry

03/24/22

How do I calculate liters of CO2 at stp from grams of octane? (3 step stoichiometry conversion)

How do I calculate liters of CO2 at stp from 1,735,513.195g of octane
Stoichiometry Chemistry Percent Yield

03/01/22

What is the Percent Yield?

Percent Yield problem with 2 Step Stoichiometry (Non Mass-Mass)Gold will dissolve in the acid mixture known as aqua regia according to the following:Au + HNO3 + 3HCl -> AuCl3 + NO + 2H2OWhat is... more
Stoichiometry Chemistry Percent Yield

03/01/22

What is the Percent Yield?

Percent Yield problem with 2 Step Stoichiometry (Non Mass-Mass)Gold will dissolve in the acid mixture known as aqua regia according to the following:Au + HNO3 + 3HCl -> AuCl3 + NO + 2H2OWhat is... more

03/01/22

CONCENTRATION OF SOLUTIONS CHEMISTRY (MOLARITY)

What is the molarity of a solution that contains 25 g of KOH in 250 mL of solution?  ﻿What is the mole fraction of sulfuric acid (H2SO4) in 8% aqueous H2SO4 solution?

02/28/22

A certain mass of an unknown third period metal hydroxide reacts with an certain volume and concentration of a diprotic acid. How do I figure out the identity of the metal?

I used dimensional analysis and the molarity of the acid to find the moles of the acid, then multiplied it by the 1:2 stoichiometric ratio since it's a diprotic acid. This gave me the moles of the... more
Stoichiometry Science Chemistry

02/27/22

Using 2H2+ Oz--> 2H20. Determine the limiting reactant when 19g of hydrogen reacts with 19g of oxygen

Well I don’t understand what this means or what the answer is.. I just need to figure everything out before tomorrow
Stoichiometry Chemistry

02/27/22

Please help! 2H2+ Oz--> 2H20 How many moles of oxygen are needed to react with 13 moles of hydrogen?

I just don’t understand these topics and I need more background information so I can figure everything out..

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