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2,124,376 results for "chemistry homework help"

Chemistry Homework Help

How many molecules are there in a 0.1g tablet of aspirin, C9H8O4? (show work)

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Chemistry Homework Help

Q3:In the combustion reaction of 149g of propane(C3H8) with excess oxygen, what volume of carbon dioxide(CO2) is produced at STP?(note: balance the reaction first)C3H8  +   O2     3CO2  +  H2O

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Chemistry Homework Help

How many grams of CaCl2 are needed to prepare 1.0 L of a 1.0M solution?

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07 homework chemistry help

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Chemistry Homework Help

3000g of CaF2 is reacted with excess H2SO4CaF2   + H2SO4       CaSO4    +  2HF1. What is the %yield of HF if only 1200g HF is produced?2. What is the theoretical yield of HF?

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Chemistry Homework Help

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Chemistry Homework Help

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Chemistry Homework Help

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Chemistry Homework Help

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organic chemistry homework help

I need help with organic chemistry problems listed below

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answer in details show all work

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How many liters of 70% sulfuric acid must be mixed with how many liters of 25% sulfuric acid to make 600 liters of a 29% sulfuric acid solution? Explain how you arrived at your answer.

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Chemistry help with homework

N2(g)     +   O2(g) <========>  NO(g). If [N2] = 0.520 M, [O2]= 0.0662 M, and [NO] = 0.00956 at equilibrium, what is the value of K?

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1. An unknown substance is found to be a good conductor of electricity when melted. Explain whether on this basis alone the substance can be classified as a metal.

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2.) What type of bond is the C-Cl bond in CCl4 (carbon tetrachloride)? a.) ionic bond. b.) polar covalent bond. c.) neutral bond. d.) nonpolar covalent bond. 3.) How many lone-pair electrons does NH3 have? Hint: Read the question carefully! Your answer:5.) What orbitals ...

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Chemistry Homework Help

Nitroglycerin (C3H5N3O9) can decompose and is represented by the following reaction:C3H5N3O9      6N2   +  CO2   + H2O   + O21. What coefficients balance the reaction?2. How much nitrogen (in grams) forms when 500g of nitroglycerin decomposes?3. How much ...

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Chemistry Homework Help

0.89mol of NO is reacted with 0.5mol O2NO  +  O2     2NO21. What are the coefficients that balance the reaction?2. What is the limiting reactant?3. What is the theoretical yield of NO2 (in grams)?4. What is the actual yield if only 65% is produced?

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Chemistry Homework Help

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Chemistry Homework Help

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Chemistry Homework Help

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