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A 6.67 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 15.17 mg of CO2 and 6.19 mg of H2O. What is the empirical formula of the compound? (Type your answer using the format CxHyOz for the compound CxHyOz)
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(b) A compound is composed of elements C, H, and N. A 7.875-mg sample of the unknown compound was combusted, producing 21.363 mg of CO2 and 6.125 mg of H2O. What is the empirical formula for this compound? (Type your answer using the format CxHyNz for the compound CxHyNz)
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If the compound has a molar mass of 160 ± 5 g/mol, what is its molecular formula?
Explain why it takes longer time when anyone cook an egg in boiling water while camping at in elevation of 0.5km in the mountain than it does it home.
Indicate the reaction conditions you would employ to accomplish the following: Conversion of tert-butyl chloride to 2-methylpropene to maximize the yield of the elimination product over the substitution product.
Helium is collected over water at 25°C and 1.00 atm total pressure. What total volume of gas must be collected to obtain 0.563 g of helium? (At 25°C the vapor pressure of water is 23.8 torr.)
what is the change in pH after addition of 10.0mL of 1.0M sodium hydroxide to 90.0mL oof a 1.0M NH3/1.0M NH4+ buffer? (Kb for ammonia is 1.8 X 10-5)
What is the empirical formula of a compound composed of 3.25% hydrogen (H), 19.36% carbon (C), and 77.39% oxygen (O) by mass? 2. A compound with the empirical formula CH2 has a molar mass of 84 g/mol. What is the molecular formula for this compoun..
The second virial coefficient B and the third virial coefficient C for A are -0.021 L/mol and 0.0012 L^2/mol^2 at 273 K respectively. By what percentage does the compressibility change
Household vinegar is 5.0% acetic acid (CH3COOH). IF you have 240.0 mL of vinegar, how many molecules of CH3COOH would there be?
how many moles of Cu2O can be produced from the reaction of 0.66 mol Cu with 0.40 mol O2?
What is a specific example that exists for each of these chemical reaction types above and why might it be of importance to healthcare professionals?
In an experiment, equal volumes of 0.00200M FeCl3 and 0.00200M NaSCN were mixed together and reacted according to the equation:
A company is marketing a photovoltaic cell that it claims has an output of 320 W/m2 when tested at the standard 1000 W/m2 irradiation condition
What is the change in pH after addition of 10.0 mL of 1.0 sodium hydroxide to 90.0 mL of a 1.0 M NH3/1.0 M NH4+ buffer? [ Kb for ammonia is 1.8 x 10^-5]?
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