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An analysis of an oxide of nitrogen with a molecular weight of92.02 amu gave 69.57% oxygen and 30.43 % nitrogen. What is the empirical formula of the compound?
The first end point volume phenolphthalein endpoint is 11.58 mL as well as the second end point volume (bromocresolgreen end point is 64.85mL. Compute the weight percentage of Na2CO3.
The air passes through a working section of area 0.04 m2 and exits to a large vacuum vessel. Find the pressure, density, velocity and mass flow rate in the working section if the Mach number there is 4.0.
Explain why aspirin is more soluble in ethanol than in water. For either of these solvents explain why it would be a better choice as a recrystallization
a gas has a volume of 10 l at 0 degrees c. what is the final temperature of the gas in c if its volume increases to 27
If 29.10 mL of a 0.145 M nitric acid is required to neutralize 50.00 mL of barium hydroxide solution, what is the molar concentration of the base?
The relative abundances of the stable isotopes of the elements are not entirely constant. For example, in some geology samples (soils and rocks) the ratio of 87Sr to 86Sr is affected by the presence of a radioactive isotope of another element, whi..
calculate the pH of the resultant solution: (a) 0.00 mL, (b) 5.00 mL, (c) 25.00 mL, (d) 45.00 mL, (e) 50.00 mL, (f) 51.00 mL.
What are the procedural difference between the preparation of tin oxide and magnesium oxide
What is the temperature in °C if the volume is 5.00 L at 2.00 atm?
Question- Enormous numbers of microwave photons are needed to warm household samples. A bowl of soup containing 484g of water is heated in a microwave oven from 20.0°C to 98.0°C using radiation with wavelength 122 mm.
Write a balanced equation of reaction. Carbon monoxide gas and oxygen gas combine to form carbon dioxide gas. Also, identify all the phases in the reaction.
Problem- When 2.094 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 7.191 grams of CO2 and 1.178 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 128.2 g/mol. Determ..
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