389 Answered Questions for the topic stoichiometry

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
Stoichiometry Chemistry

04/23/20

Chem Stoichiometry multiple choice question

How many moles of potassium iodide, KI, are required to precipitate all of the lead (II) ion from 25.0 mL of a 1.6 M Pb(NO3)2 solution?a.) 0.64 molb.) 0.080 molec.) 0.040 moled.) 064 mole.) 0.020 mole more
Stoichiometry Chemistry

04/23/20

Theoretical yield

What is the theoretical yield of H2O (MM=18) produces by burning 150g of C2H6 (MM=30) and enough O2 to allow for complete reaction. If the actual yield of H2O was found to be 135g of H2O, what is... more
Stoichiometry

04/23/20

STOICHIOMETRY: QUANTITATIVE INFORMATION ABOUT CHEMICAL REACTIONS

Ammonia gas can be prepared by the reaction of a metal oxide such as calcium oxide with ammonium chloride.CaO(s) + 2NH4CI(s) --> 2NH3(g) + H2O(g) + CaCl2(s)If 269g of CaO and 415g of NH4Cl  are... more
Stoichiometry

04/23/20

STOICHIOMETRY: QUANTITATIVE INFORMATION ABOUT CHEMICAL REACTIONS

What volume of 0.124 M NaOH , in milliliters, contains 30.0 g of NaOH ?Volume= ___ mL
Stoichiometry Chemistry Gas Concepts

04/22/20

In the reaction between Al and HCl, if 1.32 g Al were reacted with excess hydrochloric acid, how many mL of Hydrogen gas could theoretically be emitted at STP?

In the reaction between Al and HCl, if 1.32 g Al were reacted with excess hydrochloric acid, how many mL of Hydrogen gas could theoretically be emitted at STP?the balanced equation should be:2 Al +... more
Stoichiometry Science Chemistry Moles

04/22/20

How many atoms are there in 0.228 moles of water?

using dimensional analysis?
Stoichiometry Science Chemistry Moles

04/22/20

How many molecules of nitrogen are there in 7.55 moles of N₂?

using dimensional analysis?
Stoichiometry Science Chemistry Moles

04/21/20

What is the mass of 3.01 x 10²² molecules of carbon dioxide at STP?

using dimensional analysis
Stoichiometry Science Chemistry Moles

04/21/20

What volume, in liters, at STP, is occupied by 3.30 X 10²³ molecules of oxygen gas?

using dimensional analysis
Stoichiometry Science Chemistry Moles

04/20/20

calculating mass/volume at STP

1) What is the mass of 75.0 L of methane gas (CH₄) measured at STP?2) What volume, in liters, will be occupied by 48.8 g of helium gas at STP?3) What volume, in liters, at STP, is occupied by 3.30... more
Stoichiometry Chemistry

04/04/20

Chemistry Help needed ASAP

The balanced equation is C3H8+ 5O2 --------> 3CO2+4H2O. Please show the work for A-DA- Which one is the limiting reagent after 15.0 g of C3H8 reacts with19.5 g O2.B- Determine the mass of excess... more
Stoichiometry Chemistry

04/03/20

a) How many moles of glucose can be made from the reaction of 544 g of CO2? 2.06 mol and b) How many carbon atoms will be required to produce the glucose? 7.44 x 1024 carbon atoms

2) Photosynthesis in plants leads to the general overall reaction for producing glucose (C6H12O6):                                     CO2 + H2O → C6H12O6 + O2a)   How many moles of... more

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