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How many grams of nitrogen are found in 50.0 grams of potassium nitrate?
When a reddish-brown bromine solution (the solvent is often carbon tetrachloride) is added to the alkene shown below, the brown color of the bromine solution disappears
A modern multi-bladed windmill design is adapted to work in a tidal flow. When the water flows at 5 m/s, find the maximum power generated for a diameter of 4 m. Calculate the tip speed, and determine if cavitation could be a problem.
A sample of iron ore weighing 0.2370g was dissolved in an excess of a dilute acid solution. All the iron was first converted to Fe(II) ions. The solution then required 23.30mL of 0.0212 MKMnO4 for oxidation to Fe(III) ions. Compute the percent by ..
What are the concentrations of all of the following ions at the equivalecne point: Na+, H3O+, OH-, and C5H5CO2-. What is the pH of the solution at the equivalence point
The torque needed to turn the journal is 0.2 N*m. Calculate the viscosity of the oil. Will the torque increaseor decrease with time? Why?
Vinegar Is a solution of acetic acid dissolved in water. a 5.54 g sample of vinegar was neutralized by 30.10ml of .100 M NaOH. What is the percent by weight of acetic acid in the vinegar
Q.1 If 3.5 Moles of Ca(OH)^2 are present in the reaction mixture how many moles of sulfuric acid are needed to complete the equation?
A 98.5-L tank of argon gas at 2940 psi is allowed to vent into an airtight room that is and in which the temperature is 20.0 °C and the air pressure is 756 mmHg. Assuming ideal behavior, what is the volume percent argon in the air in the room afte..
A FM radio station broadcasts at a frequency of 89.7 MHz. (WCPE) How far away from the transmission antenna must you be in order to properly use a radiological survey instrument that measures in power density
A heat-resistant polymer Nomex has a number-average molecular weight of 24,116. Hydrolysis of the polymer yields 39.31% by weight m-aminoaniline, 59.81% terphtalic acid and 0.88% benzoic acid. Compute the degree of polymerization and the extent of..
If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle
an automobile achieves a gas mileage of 34.0 mi/gal. how many kilometers can it travel on 1.5 L of gasoline.
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