426 Answered Questions for the topic stoichiometry

Stoichiometry Chemistry

05/21/21

What mass of decane (C10 22 ) must burn in oxygen to produce 17.3 moles of carbon dioxide ?

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Stoichiometry Chemistry

05/21/21

If 7.6 moles of magnesium react with excess oxygen, how many moles of magnesium oxide can be produced?
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Stoichiometry Chemistry

05/21/21

stoichiometry help
To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water.4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l)  4 NaAu(CN)2(aq) + 4 NaOH(aq)(a) Determine... more
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05/20/21

Practice #5- limiting reactant in grams

Which is the greatest amount of silicon tetraflouride in grams that can be produced 48 grams of HF and 92 grams of SiO2? Which reactant is limiting? How many grams of the excess reactant will be... more
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Stoichiometry Chemistry

05/19/21

how many grams of CO2 will a car use if 883,400 grams of octane (C8H18) is being used? (grams C8H18 → grams CO2)
if a car uses 1,750,000 grams of octane, how many grams of CO2 is being used? is there a certain equation?
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Stoichiometry Chemistry

05/18/21

Determine the mass of Cu(No3)2 if 5.00 grams of copper react with silver nitrate.

Cu(s)+2AgNO3(aq)→Cu(NO3)2(aq)+2Ag(s)
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05/11/21

STOICHIOMETRY - what is the PERCENTAGE YIELD OF ASPIRIN?

Density of Acetic Acid = 1.082 g/mlMass of Salicylic Acid = 5.102 gVolume of Acetic anhydride = 10.00 mlMass of filter paper = 0.0654 gMass of watch glass = 8.677 gMass of filter paper, watchglass... more
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05/11/21

What is the percentage yield of aspirin? (STOICHIOMETRY)
Density of Acetic Acid = 1.082 g/mlMass of Salicylic Acid = 5.102 gVolume of Acetic anhydride = 10.00 mlMass of filter paper = 0.0654 g Mass of watch glass = 8.677 gMass of filter paper,... more
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Stoichiometry

05/09/21

C4H10+O2=CO2+H2O
If the reaction produces 90 grams of water, how much butane was used?ive found the answer using calculators, but I cannot find an explanation. I really need to know how the answer was derived.... more
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Stoichiometry

05/09/21

C4H10+O2=CO2+H2O
If the reaction produces 90 grams of water, how much butane was used?ive found the answer using calculators, but I cannot find an explanation. I really need to know how the answer was derived.... more
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Stoichiometry Science Chemistry

05/06/21

Worksheet chemistry

Practice Question #6 – Gram to Gram Mole Ratio Stoichiometry1.     Copper I iodide, CuI, is not stable enough to last long in storage, so it is generally made just prior to use. In can... more
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Stoichiometry Chemistry

05/06/21

Working on a quiz and I have no understanding of this. Please help me.
An alkaline battery produces electric energy according to this equation. Zn + 2MnO2 + H2O ---> Zn(OH)2 + Mn2O3 a. If 30.0 grams of zinc and 45.0 grams of manganese (II) oxide are reacted with... more
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Stoichiometry Science Chemistry

05/06/21

Practice Question #6 – Gram to Gram Mole Ratio Stoichiometry
1.     Copper I iodide, CuI, is not stable enough to last long in storage, so it is generally made just prior to use. In can be prepared from copper sulphate and hydriodic acid by the... more
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Stoichiometry Science Chemistry

05/06/21

Practice Question #6 – Gram to Gram Mole Ratio Stoichiometry
1.     Copper I iodide, CuI, is not stable enough to last long in storage, so it is generally made just prior to use. In can be prepared from copper sulphate and hydriodic acid by the... more
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05/06/21

Practice #6 Gram to gram Ratio Stoichiometry
Copper I iodide , Cul , is not stable enough to last long in storage , so it is generally made just prior to use . In can be prepared from copper sulphate and hydriodic acid by the following... more
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Stoichiometry Chemistry

05/04/21

How many grams of acetylene, C2H2, are produced by adding 3 moles of CaC2?
How many grams of acetylene, C2H2, are produced by adding 3 moles of CaC2? show your math below.
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Stoichiometry Science Biology Chemistry

04/30/21

A car's airbag needs to be filled with 140 liters of nitrogen gas. Using 2NaN3 → 2Na+3N2 , determine how many grams of sodium azide (NaN3) will be required to produce the 140 liters of nitrogen gas.

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Stoichiometry Chemistry

04/22/21

Chemistry Stoichiometry Problem?
Acetylene gas, C2H2, can be produced by reacting solid calcium carbide, CaC2, with water. The products are acetylene and calcium hydroxide, Ca(OH)2. How many grams of calcium carbide is needed to... more
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Stoichiometry Chemistry

04/22/21

Gas Stoichiometry Problem (AP Chem)
Consider the reaction between 60.0 ml of liquid methyl alcohol, CH3OH (density = .850 g/ml) and 30.1 liters of O2 at 27°C and a pressure of 1.5 atm. The products of the reaction are CO2(g) and... more
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Stoichiometry Chemistry

04/22/21

How much mercury(II) oxide (HgO) is needed to produce 322 g of oxygen (O2)? Answer in units of mol.
part 1 Oxygen was discovered by Joseph Priestley in 1774 when he heated mercury(II) oxide to decompose it to form its constituent elements. How much mercury(II) oxide (HgO) is needed to produce 322... more
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Stoichiometry Chemistry

04/22/21

How many moles of water are produced when 66 g of pure hydrazine is ignited in the presence of 82 g of pure oxygen? Answer in units of mol.
Hydrazine (N2H4) emits a large quantity of energy when it reacts with oxygen, which has led to its use as a fuel for rockets, N2H4(ℓ) + O2(g) → N2(g) + 2 H2O(g). How many moles of water are... more
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Stoichiometry Chemistry

04/22/21

What mass of MgCl2 will be produced if 8.29 g of Mg(OH)2 reacts? Answer in units of g.
part 1Answer for part 1 and part2 in units of g Milk of magnesia, a suspension of Mg(OH)2 in water, reacts with stomach acid (HCl) in a neutralization reaction. Mg(OH)2(s) + 2 HCl(aq) −→ 2 H2O(ℓ) +... more
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Stoichiometry Chemistry

04/22/21

1.8 mol HCl and 3.4 mol NaOH react according to the equation HCl + NaOH −→ NaCl + H2O . If the limiting reactant is HCl, calculate the amount of NaCl formed. Answer in units of mol.
part 11.8 mol HCl and 3.4 mol NaOH react according to the equation HCl + NaOH −→ NaCl + H2O . If the limiting reactant is HCl, calculate the amount of NaCl formed. Answer in units of mol.part... more
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Stoichiometry Chemistry

04/22/21

How many molecules are in 2.25 × 10−3 g of C6H12O6? Answer in units of molec.
How many molecules are in 2.25 × 10−3 g of C6H12O6? Answer in units of molec.
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Stoichiometry Chemistry

04/22/21

Slaked lime (Ca(OH)2) is formed from quicklime (CaO) by the addition of water: CaO(s) + H2O(ℓ) → Ca(OH)2(s).What mass of slaked lime can be produced from a mixture of 20.7 g of CaO and 11.6 g of H2O?
Slaked lime (Ca(OH)2) is formed from quicklime (CaO) by the addition of water: CaO(s) + H2O(ℓ) → Ca(OH)2(s).What mass of slaked lime can be produced from a mixture of 20.7 g of CaO and 11.6 g of... more
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