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when carbon is burned in the presence of oxygen, the carbon and oxygen combine to produce carbon dioxide. if you start with 3 grams of carbon and 8 grams of oxygen and they react completely, how many grams of carbon dioxide will be produced?
Atoms of different elements also have different sizes, just like kernels and marbles. Use the atomic radii given below to answer the following questions. Remember that the volume of a sphere is 4/3 × ? × radius3.
What mass of liquid water at room temperature (25 C) can be raised to its boiling point with the addition of 31.0 kJ of energy
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2
What alcohol would be most appropriate for the synthesis of 1-methylcyclohexene. Write an equation.
A gas sample was collected over water at 25.3 degrees C. The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected
On a mission to a newly discovered planet, an astronaut finds chlorine abundances of 13.85% for 35Cl and 86.15% for 37Cl . What is the atomic mass of chlorine for this location. The mass of 35Cl is 34.97 amu. The mass of 37Cl is 36.97 amu.
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
Consider a piece of gold jewelry that weighs 9.78 g and has a volume of 0.680 cm3. The jewelry contains only gold and silver, which have densities of 19.3 g/cm3 and 10.5 g/cm3, respectively.
When two atoms form a covalently-bonded diatomic molecule, the distance between the nuclei at which the potential energy is at a minimum is called
How many grams of calcium hydroxide is produced when 3.2 micrograms of CaC2 reacts with 5.1 micrograms of water?
The design calls for reheating the liquid after the temperature has dropped to seventy degree Celsius the determine about how many stags and how many heaters are required for this process?
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