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Determining an Empirical Formula by Combustion Analysis
The compound dioxane, which is used as a solvent in various industrial processes, is composed of C, H, and O atoms. Combustion of a 2.203-g sample of this compound produces 4.401 g CO2 and 1.802 g H2O. A separate experiment shows that it has a molar mass of 88.1 g/mol. Which of the following is the correct molecular formula for dioxane
The compound dioxane, which is used as a solvent in various industrial processes, is composed of , , and atoms. Combustion of a 2.203- sample of this compound produces 4.401 and 1.802 . A separate experiment shows that it has a molar mass of 88.1 . Which of the following is the correct molecular formula for dioxane
A sample of 0.0020 mole of HCl is dissolved in water to make a 1500. mL solution. Calculate the molarity of the HCl solution, the [H3O+], and the pH. For a strong acid such as HCI,.
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calculate the concentrations of the protonated and unprotonated forms of bromothymol blue in 100 ml of a ph 8.1 buffer
arrange the following alkenes in order of increasing heat of hydrogenation (That is, heat released when the compound is hydrogenated). 1 = lowest heat,...................5=highest heat
The molar solubility of MnCO3 is 4.2 x 10-6 M. What is Ksp for this compound?
If the densities of 20%, 50% and 70% solutions are 0.69 and 0.58 and 0.49 g/mL, respectively, and the denisty of the unknown solution is 0.50 g/mL, what is the approximate concentration of the unknown solution.
Based on the molecular formula, determine whether each of the following is an alkane, alkene, or alkyne. (Assume that the hydrocarbons are noncyclical and there is no more than one multiple bond.)
a tube containing hydrogen gas is attached to a device that supplies energy to the atoms. some of the atoms have
Explain a gaseous fuel mixture stored at 747 mmHg as well as 298 K contains only methane and propane. While 11.3 L of this fuel mixture is burned, it produces 766 kJ of heat.
When 34.2 mL of a 1.02 M NaOH solution is added from a burette to 25.00 mL of a phosphoric acid solution that contains phenolphthalein which caused the solution to change from colorless to red at a certain pH, what is the molarity of the phosphori..
A professional emergency responder should be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
The air we breathe is approximetly 20% oxygen. the reaction for the complete combustion of acetylene is 2C2H2 + 5O2 ------> 4CO2+ 2H2o
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