310 Answered Questions for the topic stoichiometry

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
Stoichiometry Science Biology Chemistry

04/02/20

How many grams of Li3N can be formed from 12.1 grams of Li? Assume an excess of nitrogen (N2). 6 Li(s) + N2(g) → 2 Li3N(s)

Formula: 6 Li(s) + N2(g) → 2 Li3N(s)
Stoichiometry

03/28/20

How many molecules (not moles) of NH3 are produced from 1.72×10−4 g of H2?

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