What mass of f2 is needed
Consider the following unbalanced reaction.
P4(s) + F2(g) PF3(g)
What mass of F2 is needed to produce 113 g of PF3 if the reaction has a 81.4% yield?
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A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K. What is the composition of the mixture by volume?
Write the reaction equation of MCO3 and HCl; (b) Calculated the Molecular Mass of MCO3. (c) Determine what is this sample: CaCO3 ; MgCO3; or BaCO3 ?
A vertical curve is formed when a rural highway passes under a bridge joining a -8% grade to the horizontal grade satisfying the requirement for safe speed of 90 Km/hr
Determine the solubility of CO2 in soda water at 25°C if the pressure of CO2 is 5.2 atm. The Henry's law constant for carbon dioxide in water at this temperature is 3.4 × 10-2 M/atm.
How many grams of oxygen are collected in a reaction where 231 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
A circular drain pipe has a radius of 375 mm. It conveys water (30 ºC) from location 1 to location 2, between which there is a drop in elevation (0.0015 m per m).
If you want to have a water-salt solution that freezes at -10°C, what mass of NaCl must you add to 3.0 kg of water? (Assume the van't Hoff factor, i, for NaCl is 1.85.)
Calculate the wavelength in nm of light (Hz) illuminating a sodium surface if the threshold wavelength of sodium is 544 nm and the kinetic energy of the electron emitted is 3.00 × 10-19 J.
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