139 Answered Questions for the topic Moles

11/12/17

moles chemistry question
How many moles of gold atoms do 4.50x10^24 gold atoms constitute?
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Moles

11/10/17

Solving mole calculations with equations
Magnesium and hydrochloric acid react to form magnesium chloride and hydrogen gas. Calculate the volume of H2 (g) produced at rtp when 4.8g Mg reacts with HCl. (Mg=24)
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Moles

11/08/17

One of the reaction involved in formation of rust on your car involves iron solid reaction with water and oxygen to form iron (111) hydroxide
a how many iron atoms reacted b how much iron (111) hydroxide could be formed 45 g sample of iron was used
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Moles

11/08/17

Stoichimetry
iron, water and oxygen reacts to make iron lll hydroxide   a) how many  iron atoms reacted b) how much iron lll hydroxide could be formed (grams)
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Moles

11/08/17

How many iron atoms reacted in iron (111) hydroxide
45 g sample of iron was used
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Moles

10/21/17

A) How many atoms of carbon are contained in 2.13 ×10−5g of carbon?; B) Deduce the empirical and molecular formula.
A chlorinated hydrocarbon compound was analysed and found to consist of 24.24 % of carbon, 4.04 % of hydrogen and 71.72 % of chlorine. From another experiment the molecular mass of the same... more
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Moles

10/19/17

when 0.001 mole of a chloride was added to water the solution required 40cm3 of 0.05M silver nitrate (AgNO3) for complete reaction. the original chloride is?
These are the possible answers: A) NaCl B)SOCl2 C)PCl3 D)SnCl4
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Moles

10/17/17

According to this reaction, how many moles of sugar will it be required to produce 2.71 g of water?
  In our bodies, sugar (C6H12O6) reacts with oxygen (O2) we breathe in to produce carbon dioxide (CO2), water (H2O) and energy   6CO2 + 6H2O —> C6H12O6 + 6O2
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08/18/17

chemistry problem
The natural abundance of 2H is 0.015% and that of 18O is 0.20%. How many 2H218O molecules are there in 1.0 moles of water?
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Moles

07/24/17

how do you prepare 125ml of 1.5 moles of CaCl2
how do you prepare 125ml of 1.5 moles of CaCl2
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07/20/17

Chemistry; solutions
An experiment calls for 50 mL of a 0.5 M aqueous solution of sodium hydrogen carbonate. Describe how you would make up such a solution?
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05/31/17

A 15.00 g sample of calcium carbonate was placed in excess hydrochloric acid (HCl). A reaction occurred producing calcium chloride, water, and carbon dioxide.
Formula: CaCO3 + 2HCl = CaCl2 + H2O + CO2 (already balanced)   How many moles of CaCO3 reacted? Theoretically, how many grams water should be produced?   Answer both questions, show work... more
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Moles Chemistry

05/30/17

1 mole of strontium phosphite contains...
1. How many strontium ions?   2. How many phosphite ions?   3. How many oxygen atoms?   Please show work so I know what you did, thank you
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Moles Convert Grams

05/29/17

Convert the following units (Show Work Please)
How many grams are in 5.12 moles of HCN?
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05/10/17

2S+3O2=2SO3 is the equation... what mass of molecular oxygen when reacted with excess sulfur will produce 646.97 grams of SO2?
The numbers in the equation are subscripts *in front of compound are coefficients to balance the equation  please show your work, so i can see how you did it(:
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05/10/17

How many grams of CO2 would be produced? - Show Work Please
Question: For the balanced equation shown below, if the reaction of 91.3 grams of C3H6 produces a 81.3% yield, how many grams of CO2 would be produced?   Equation: 2C3H6 + 9O2 = 6CO2 + 6H2O
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05/10/17

What is the percent yield? - Show Work Please
Question: If the reaction of 20.7 grams of CaCO3 produces 6.81 grams of CaO, what is the percent yield?   Equation: CaCO3 = CaO + CO2
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05/10/17

What is the theoretical yield of P4O10? - Show Work Please
Question: 23.9 grams of P4 react with 20.8 grams of O2, how many grams of P4O10 would be produced?   Equation: P4 + 5O2 = P4O10 (already balanced)
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05/10/17

What is the theoretical yield of Cl2? - Show Work Please
Question: If 18.3 grams of C2H5 were reacted with 37.3 grams of O2, how many grams of Cl2 would be produced?   Equation: 4C2H5Cl + 13O2 = 8CO2 + 10H2O + 2Cl2 (already balanced)
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05/10/17

Theoretical Yield of H3PO4? - Show Work Please
Question: 93.8 grams of PCl5 react with 20.3 grams of H2O. How many grams of H3PO4 would be produced (theoretical yield)?   Equation: PCl5 + 4H2O = H3PO4 + 5HCl
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05/07/17

Limiting Reagents (Chemistry) Answer a-d + Show Work Please
Equation: Al2(SO3)3 + 6NaOH = 3Na2SO3 + 2Al(OH)3 (already balanced)   a) If 10.0 g of Al2(SO3)3 is reacted with 10.0 g of NaOH, determine the limiting reagent.   b) Determine the number of... more
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Moles

05/05/17

Calculate mass of Zinc Chloride produced if 0.040 moles of hydrochloric acid reacts with excess zinc.
Dilute H Cl was added to zinc until no further reaction occurred. what mass of zinc chloride would be produced if 0.040 mole of H Cl reacted with excess zinc? The answer i got was 1.31 grams of... more
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05/05/17

Limiting Reagents (Chemistry) Answer a-d + Show Work Please
Equation: C3H8 + 5O2 = 3CO2 + 4H2O (already balanced)   a) If you start with 14.8 g of C3H8 and 3.44 g of O2, determine the limiting reagant   b) Determine the number of moles of carbon dioxide... more
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Moles Chemistry

04/18/17

How many molecules in 1.00 grams of water?
How do you solve this? 
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Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)
Equation: Zn + 2HCl = ZnCl2 + H2   Given: .15 mol Zn react
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