388 Answered Questions for the topic stoichiometry

Stoichiometry Chemistry

03/03/21

I do not understand stoichiometry
In the balanced chemical equation below, how many moles of copper(II) carbonate are made from the reaction of 42 grams of copper(II) sulfate and excess silver carbonate? CuSO4 + Ag2CO3 -->... more
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Stoichiometry

03/02/21

Given the reaction: C3H8 + 5 O2 → 3 CO2 + 4 H2O
What is the total number of moles of O2 required to produce 1.5 moles of CO2? A) 5.0 B) 2.5 C) 3.0 D) 1.5
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Stoichiometry Science Chemistry Chem

03/01/21

In a lab, nitrogen trichloride is synthesized from its elements. This reaction has a 60.0% yield...
In a lab, nitrogen trichloride is synthesized from its elements. This reaction has a 60.0% yield. A chemist wants to prepare 50.0g of nitrogen trichloride, with a 60.0% yield, what mass of nitrogen... more
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Stoichiometry Chemistry

03/01/21

Stoichiometry helpppp
How many moles of calcium are in 3.24x1023 atoms of calcium? Round to 2 decimal places for your answer.  __ mol Ca?What mass of lead is 0.294 mol of lead? Round to 2 decimal places for your... more
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Stoichiometry Chemistry

02/24/21

Oxygen Gas can be produced by decomposing potassium chlorate using the reaction below. If 30.6 g of KCIO3 is heated and decomposes completely, how many liters of oxygen gas is produced at STP?
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Stoichiometry Chemistry

02/24/21

How many grams of Ca are needed to make 3.00 moles of Ca3P2?
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Stoichiometry

02/18/21

Stoichiometry Question
Given the following equation: Na2O + H2O ---> 2 NaOH, how many grams of H2Oare in 34.2 grams of NaOH?
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Stoichiometry Chemistry

02/12/21

Starting with 5.00 moles of potassium sulfate and 4.00 moles of calcium nitrate, to make calcium sulfate. What reactant is the limiting reactant?
K2SO4+Ca(NO3)2=CaSo4+2KNO3
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Stoichiometry Chemistry

02/12/21

mole ratios in stoichiometry
in the reaction 2CO2 +2h2O=C2H4+3O2 the mole ratio of water to oxygen is____.
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Stoichiometry Chemistry

02/12/21

how many grams of barium chloride are needed to produce 4.35 grams of Ba?
__Cu+__BaCl2 = __Ba+__CuCl3
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Stoichiometry Chemistry

02/12/21

How many moles of NO can be produced from 0.680 g of NH 3  according to the following reaction?  4 NH 3  + 5 O 2  → 4 NO + 6 H 2 O
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Stoichiometry

02/11/21

This reaction occurs with a theoretical yield of KI of 45.98 grams. However, once the reaction is complete, only 40.00 grams of KI were produced. Determine the percent yield of the reaction.

3Srl2 + 2K3As = 6Kl + Sr3As2
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Stoichiometry Chemistry

02/11/21

2H2S + 3O2 -> 2SO2 +2H2O Starting with 9.2 moles of O2, How many moles of H2O will you produce?
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02/10/21

Mass to Mass stoichiometry

Part one: The compound diborane (B2H6) was at one time considered for use as a rocket fuel. Its combustion reaction is B2H6(g) + 3 O2(ℓ) → 2 HBO2(g) + 2 H2O(ℓ) The fact that HBO2, a reactive... more
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Stoichiometry

01/27/21

Using the reaction B2H6 + 3O2 > 2HBO2 + 2H2O, determine the mass of oxygen needed to completely burn 32.1 g B2H6.

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Stoichiometry Chemistry

01/27/21

Oxygen was discovered by Joseph Priestley in 1774 when he heated mercury (II) oxide to decompose it to form its constituent elements.
a. How many moles of mercury (II) oxide, HgO, are needed to produce125 g of oxygen, O2?b. How many moles of mercury are produced?
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Stoichiometry Chemistry

01/27/21

When copper metal is added to silver nitrate in solution, silver metal and copper (II) nitrate are produced. What mass of silver is produced from 100. g Cu?
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Stoichiometry Chemistry

01/25/21

How many grams of Si3N4 can be produced from 0.46 moles of N2?

3 Si + 2 N2 → Si3N4
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01/25/21

Please help with Chemistry Question!
Consider the reaction of hydrogen and oxygen producing water. If 26.1 g of water is produced and 23.0 g of oxygen is used how many grams of hydrogen are needed?
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Stoichiometry Chemistry

01/15/21

Zn+2HCL=ZnCL2+H2
What is the total mass of ZnCL2 produced when 195 g of Zn react completely with 216 g of HCL to produce 6g of H2?i got 51 g but i don’t think it’s right, how do i do this
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Stoichiometry Chemistry

01/15/21

2Al + 3Cl2 --> 2AlCl3 If 12.8 g of aluminum reacts with 39.1g of chlorine, how many g of AlCl3 forms? Also what is the limiting reactant(name only, not mass)
I dont understand the limiting reactant part on the homework
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Stoichiometry Chemistry

01/15/21

2 Mg + O2 --> 2 MgO If 6.9 g of Mg react with 450 g of O2 what mass of product forms?
Im wondering how I should do this
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Stoichiometry Chemistry

01/13/21

Oxygen gas and water are produced by the decomposition of hydrogen peroxide (h2o2). If 10.0 mol of h2o2 decomposes, what volume of oxygen will be produced?
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Stoichiometry Chemistry

01/09/21

The half-life of 237U is 6.75 days. Starting with a 50 mg sample, how much would be left after 54 days?
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01/08/21

so I need help with stoichiometry#2 is the lesson we are on if anyone could please explain. the problem is down below
Sodium tetraborate is produced according to the following reaction:4H3BO3 + 2NaOH → 7H2O + Na2B4O7How many grams boric acid are needed to make 150 tons of sodium tetraborate? (Remember that 454 g =... more
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