2,220 Answered Questions for the topic organic chemistry

Organic Chemistry

06/07/20

Which of the following errors could cause your percent yield to be falsely high, or even over 100%?
Heating the sample too vigorously. Handling the crucible directly with your hands. Failing to completely decompose the sodium bicarbonate sample. Taking the mass of the empty crucible without the... more
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Organic Chemistry

06/06/20

What is the experimental yield of sodium carbonate? What is the percent yield for sodium carbonate?
Assume that your empty crucible weighs 15.98 g, and the crucible plus the sodium bicarbonate sample weighs 18.56 g. After the first heating, your crucible and contents weighs 17.51 g. After the... more
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Organic Chemistry

06/06/20

It is best to have a _____ percent yield and a _____ percent error. The options are HIGH and LOW.
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Organic Chemistry

06/04/20

Explain the Lewis structure of H2SO4
Why are two S :: O bonds double bonds?
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Organic Chemistry

06/04/20

CH3CN Lewis Structure
Why does C ::: N have a triple bond?
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Organic Chemistry

06/04/20

N2H4 Lewis Structure

Why can’t the 2 N have a double bond in the Lewis Structure for N2H4?
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Organic Chemistry

06/04/20

For each compound, state whether it’s binding is covalent, ionic, or a mixture of covalent and ionic.
a) NaClb) NaOHc) CH3Lid) CH2Cl2e) NaOCH3f) HCO2Nag) CF2How can you tell if it’s ionic or covalent bonds or a mixture?I know a) = covalent because its easier for Cl to gain an electron to become Ar.... more
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Organic Chemistry Chemistry Chem

05/27/20

What is the IUPAC Name for CH3CH2CH2CHCHCH2CH2CH3?
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Organic Chemistry Chemistry

05/27/20

Why is But-3-ene incorrect?

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Organic Chemistry Science Chemistry

05/22/20

What is the pH of the perchloric acid solution if 4.55 L of perchloric acid solution reacted completely with 1.86 g sodium carbonate in a double replacement reaction?
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Organic Chemistry Science Chemistry

05/21/20

How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid
How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid
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Organic Chemistry Science Chemistry

05/21/20

what is the oxidation number of manganese in permanganate ion?
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Organic Chemistry Science Chemistry

05/21/20

how many grams of water react with 5 grams iron chloride
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Organic Chemistry Science Chemistry

05/21/20

how many grams of water are produced when 2.50 mol oxygen reacts with hydrogen
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Organic Chemistry Science Chemistry

05/21/20

how many grams of water are produced from reacting 32.0 g hydrogen??
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Organic Chemistry Chemistry Ap Chemistry

05/20/20

can some one please explain
How many grams of iron (Fe, molar mass = 55.85 g∙mol–1) is needed to experimentally produce 50.0 g of iron(III) oxide (Fe2O3, molar mass = 159.70 g∙mol–1) if the percent yield is 78.7%?   
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Organic Chemistry Chemistry Biochemistry

05/20/20

Strontium (average atomic mass = 87.62) naturally exists as 4 stable isotopes with masses of 84, 86, 87, and 88. Which statement is correct?
Strontium-88 is the most abundant.Strontium-87 is the most abundant.All strontium isotopes are equally abundant.Strontium-86 is the most abundant.
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Organic Chemistry Chemistry Biochemistry Chem

05/20/20

A bottle of Bourbon Whiskey contains 250.ml of liquid and 42% alcohol (C2H5OH). assuming density = 1.05g/ml, will the whiskey freeze if put into a -20.0 degree celsius freezer?

can someone please explain.
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Organic Chemistry Chemistry Biochemistry Ap Chemistry

05/20/20

A 0.152mol sample of CH2O2 reacted completely according to the reaction shown and 38.7 kJ of heat was released. What is delta H for this reaction?
2CH2O2+O2---->2CO2+2H2Ocan someone please explain.
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Organic Chemistry Chemistry Biochemistry Chem

05/19/20

What is the concentration of bromide ion if 25.0 ml of a 0.50 M AlBr3 solution combines with 40.0 ml of a 0.35 M NaBr solution?
I converted AlBr3 and NaBr to moles however, I'm not so sure what to do after that. I know the final answer for the concentration of bromide ion is 0.79 mol/L. Can someone please help ?AlBr3 =... more
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Organic Chemistry Chemistry Biochemistry Chem

05/19/20

Can someone please tell me if there is an easier way to answer this question? and if I did it correctly please.

A 2.32g sample of Na2SO4*nH2 yields 1.42g Na2SO4 upon heating. What is the value of n?Na2SO4*nH20--->Na2SO4(s)+nH20(g)Molar Mass Na2SO4 =142 g/molMolar Mass H2O = 18.016 g/molI'm not sure if I... more
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Organic Chemistry Science Chemistry Biochemistry

05/19/20

Tetrahydrocannabinol (thc), the active agent in marijuana, is composed of 80.16% carbon, 9.63% hydrogen and 10.17% oxygen by mass. What is the empirical formula of thc?
The answer I got was C7H10O, however I think I am missing a step since my answer was incorrect. This is what I did 80.16g C (1mol/12.01g)C =7 mol C 9.63g H (1mol/1.008g)H =10mol H 10.17g O... more
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Organic Chemistry Biochemistry Chem Ap Chemistry

05/19/20

A sample of ethanol (C2H6O) contains 3.024g of hydrogen. How many moles of carbon are in the sample ? Molar Mass of ethanol (C2H6O)=46.07g/mol
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Organic Chemistry Science Chemistry Act Science

05/19/20

Please help! I cannot figure out the steps of going from mass of Hydrogen to moles of carbon in ethanol.
A sample of ethanol (C2H6O) contains 3.024g of hydrogen. How many moles of carbon are in the sample ? Molar Mass of ethanol (C2H6O)=46.07g/mol
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Organic Chemistry Chemistry

05/18/20

Balance the redox reaction below using the half-reaction method. Fe3+(aq) + Gd(s)  Fe2+(aq) + Gd3+(aq)
Balance the redox reaction below using the half-reaction method. Fe3+(aq) + Gd(s)  Fe2+(aq) + Gd3+(aq) (a) To show your method, write the balanced half reactions below. Use the smallest integer... more
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