What mass of f2 is needed to produce 205 g of pf3
P4(s) + F2(g) -> PF3(g)
What mass of F2 is needed to produce 205 g of PF3 if the reaction has a 79.3% yield?
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Balance the eqaution C4H9SO+O2 !CO2+ SO2+H2O using the smallest possible integers. What is the sum of the coefficients in the balanced equation?
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A mixture of CaCO3 and CaO weighing 0.630 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.500 g. Assuming all the CaCO3 broke down to CaO and CO2, calculate the mass percent of CaCO3 in the original mixture.
What is the main overall driving force for any spontaneous reaction or change?
The upside-down steel A frame shown in the figure is to be bolted to steel beams on the ceiling of a machine room using ISO grade 8.8 bolts.
A 120g sample of an unknown substance was heated from 15oC to 30oC. The substance absorbed 458 joules of energy. What is the specific heat of this substance?
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Propane gas enters a continuous adiabatic heat exchanger' at 40°C and 250 kPa and exits at 240°C superheated steam at 300°C and 5.0 bar enters the exchanger flowing counter currently to the propane and exits as a saturated liquid at the s
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