385 Answered Questions for the topic stoichiometry

Stoichiometry

12/04/20

Stoichiometry Question

Chlorine is used by textile manufacturers to bleach cloth.  Excess chlorine is destroyed by its reaction with sodium thiosulfate, Na2S2O3:Na2S2O3(aq) + 4Cl2(g) + 5H2O(aq) 🡪 2NaHSO4(aq) +... more

10/16/20

5 Stoichiometry questions Please help

1(a) sodium and water react to give sodium hydroxide and hydrogen gas, H2 and 1.15 grams of sodium were added to excess oxygen and produced 1.6grams of sodium hydroxide. What was the percentage... more
Stoichiometry Chemistry

10/16/20

Explain How Stoichiometry is done

Hello I have a hard time with stoichiometry and would like to know how to do it the topic is very difficult for me and i get lost on the simple things so starting from the beginning would be great... more
Stoichiometry Chemistry Percipitation

10/09/20

Calculate the concentration of all remaining ions in solution after precipitation ends.

10.0 mL of 0.200 M Na2SO4 and 20.0mL of Pb(NO3)2I know I need to find the net ionic equation but once I get there how do I solve for each ion's molarity?
Stoichiometry Chemistry

09/21/20

Help me to answer some stoichiometry question 🙏

1. Given the following equation: 2 KClO3 ---> 2 KCl + 3 O2How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?2. Given the following equation:2 C4H10 + 13 O2 ---> 8 CO2... more
Stoichiometry Math Chemistry Biochemistry

09/21/20

need help with a homework problem, very advanced

Guanine is an essential component of DNA. It contains the elements carbon, hydrogen,nitrogen and oxygen. When 615 mg of guanine is burned, 895 mg of carbon dioxide and 183 mgof water are formed. In... more

09/21/20

why do you assume 100 g of a substance when given percentages?

when given a problem and the elements of a compound are given in percentages, i don't understand why you can just assume that it's 100g of the compound. why couldn't it be 200g or 700g of the... more
Stoichiometry Science Chemistry Homework

09/11/20

If you burn 33.7g of hydrogen and produce 301g of water, how much oxygen reacted?

In the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor.Hydrogen + Oxygen —> WaterIf you burn 33.7g of hydrogen and produce 301g of water, how much... more
Stoichiometry Chemistry

09/11/20

8 stoichiometry questions

1) Sulfur burns in excess air to form sulfur dioxide according to the equation: S(s)+O2(g)-> SO2(g)What volume of sulfur dioxide is produced (at room temperature and pressure) from 24g of... more
Stoichiometry Chemistry

06/28/20

How many grams of barium salt are produced when a solution containing 42.3 g of Barium nitrate is mixed with a solution containing excess sodium chloride?

Barium nitrate (Ba(NO3)2) reacts with sodium chloride (NaCl) in a double replacement (displacement) reaction, shown below. Ba(NO3)2(aq)+NaCl(aq)-->???Use 261.34 as the molar mass for barium... more
Stoichiometry Science Chemistry

05/30/20

what would the right answer be

Gold dissolves in the acid mixture known as aqua regia according to the following balanced reaction: Au + HNO3 + 3 HCl --> AuCl3 + NO + 2H2O If... more
Stoichiometry Chemistry

05/16/20

How many mL of 1 M HNO3 are needed to neutralize 500 mL of 2.0 M Ca(OH)2?

HNO3****Ca(OH)2********
Stoichiometry Chemistry Grams To Grams

05/12/20

URGENT!! TELL ME THE FORMULA

on a glass of 20g of copper oxide(II) is added 0.2dm3 h2so4,caclulatr the amount of CuSO4 formed by this reaction?
Stoichiometry Chemistry Moles

05/02/20

Calculate mass in g of Cu(OH)2 left behind after incomplete heating?

12.07g of CuSO4*5H2O is reacted with enough NaOH to completely precipitate Cu(OH)2. The Cu(OH)2 is not heated long enough, so exactly 35.27 percent of Cu(OH)2 is converted to CuO. How much Cu(OH)2... more
Stoichiometry

05/01/20

How many grams of mgcl2 will be produced from 12g of mg(oh)2 and 42g of hcl

Stoichiometry Chemistry

04/28/20

How much sodium hydroxide must you start with to yield 145 g of aluminum hydroxide

given the equation: Al2(SO3)3+ 6NaOH ----> 3Na2SO3 + 2Al (OH)3 and you start with 389.4 g of Al2(SO3)3 and isolate 212.4 g of Na2SO3 How much sodium hydroxide must you start with to yield 145 g... more

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