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An incandescent light bulb functions because of the flow of electric current. Does the incandescent light bulb convert all of the electrical energy to light? Observe a functioning incandescent light bulb, and explain what occurs with reference to the Law of Conservation of Energy
solving this question helps the student to understand how to find molecularnbsp formula using empirical formula and
What is the theoretical yeild of sodium carbonate for the equation: 2NaHCO3(s)--> Na2CO3(aq) + H2O(g) + CO2(g)
there are 2.2 mg of lead in exactly 500 g of a water sample. what would the concentration of lead be in parts per
The equlibrium constant (Kc) for the following reaction is 6.7 *10^-10 at 630 C N2(s)+O2(g)>2NO (g). What is the equlibrium constant for (Kc) the reaction 1/2 N2(g)+1/2O2(g)>NO(g)
Which of the following is/are an atom, an isotope and an ion?
calculate the amount of heat needed to boil 50.6g of ethanol ch3ch3oh beginning from a temperature of 24.4c . round
You transfer a gas at 25oC from a volume of 2.49 L and 0.950 atm to a vessel at 32oC which has a volume of 8.75 L. What is the new pressure of the gas
Titrate 80ml of NH3 w/35ml of 0.30M HCl. Find pH and select an indicator beside bromocresol green that can be used.
1. we have a solution of unknown substance dissolved in water at the temperature of 300 kelvin this solution gives
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
When the pollutant's concentration reaches 90% of its steady-state value, the flow of the pollutant is stopped. On what date will the concentration of the pollutant fall to 1% of its maximum concentration? Assume that the rate constants of the inc..
a solution of sodium cyanide (NaCN) has a pH of 12.10. How many grams of NaCN are in 425 mL of solution with the same pH
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