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Explain if 12.5 grams of a certain fertilizer is found to contain 3.35 grams of phosphorous as P2O5, explain what is the value of P in the N-P-K designation?
What is the entropy change for the reaction 2H2(g) + O2(g) 2H2O(l) at 372.2 K and 1.0atm? the enthalpy of reaction at 298.2K and 1.0atm is -572 KJ. The Cp values for H2, O2 and H2O are respectively
Multiple choice questions in Nuclear reactions - make nuclear fission more efficient, which device is used in a nuclear reactor to slow the speed
The rate at which an Australian tree cricket chirps is 184 per minute at 35 degrees C, but only 50 chirps per minute at 10 degrees C. Assuming that cricket chirping follows the Arrhenius Law, what is the activation energy for the cricket chirping
When preparing 4-bromoaniline from 4-bromo-N-ethanoylbenzenamine, the hydrolysis mixture is rendered alkaline before the steam distillation. Why. It has something to do with acid/base reactions and volatilities of ionic compounds.
Two solutes were used to study diffusion in liquids, methylbenzene, which is a small molecule that can be approximated as a sphere, and a liquid crystal that is long and rod like.
question when a 2.00-g sample of kscn is dissolved in water in a calorimeter that has a total heat capacity of 1.717
1. how will you determine when all of the reactant has been converted into products?2. why is the crucible and its
write the balanced reaction for the complete combustion f octane c8h18 and then determine how many moles of oxygen it
A scientist wishes to compress 50.0 ml of ammonia gas at normal atmospheric pressure to a volume of 1.0 ml. What pressure in atmospheres is necessary?
The vapor pressure of water at 25 is 23.76 .If 1.10 of water is enclosed in a 2.0 container,there will be liquid persent. what mass of liquid
A 466-g of water is heated from 8.50°C to 74.60°C. Calculate the amount of heat absorbed (in kilojoules) by the water. The specific heat of liquid water is 4.184 J/(g °C).
A gas sample containing N2 and O2 was found to contain 72% N2. If the pressure of the sample was 2.0 atm, what is the partial pressure of O2?
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