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Write the Lewis structure and chemical formula of the compound with a molar mass of about 70 g/mol that contains 19.7% nitrogen and 80.3% fluorine by mass, and determine the formal charge of the atoms in this compound.
Evaporation of sweat requires energy and thus take excess heat away from the body. Some of the water that you drink may eventually be converted into sweat and evaporate. If you drink a 20-ounce bottle of water that had been in the refrigerator at 3.8 °C, how much heat is needed to convert all of that water into sweat and then to vapor? (Note: Your body temperature is 36.6 °C. For the purpose of solving this problem, assume that the thermal properties of sweat are the same as for water.)
What is the relationship between the ionization energy of an anion with a 1- charge such as F- and the electron affinity of the neutral atom, F
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 62 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 33 s for 1.0 L of O2 gas to effu..
A standard solution of sodium hydroxide has a molar concentration of 0.128M. You use 25.00ml of a solution of hydrochloric acid and this requires 32.75ml of the standardized sodium hydroxide solution to reach the endpoint. WHAT IS THE molar concen..
Question- What hybridization is required for central atoms that have a tetrahedral arrangement of electron pairs. A trigonal planar arrangement of electron pairs? A linear arrangement of electron pairs
A saturated solution of NaNO3 in 100 grams of water at 40 degrees celcius is heated to 50 degrees celcius. What is the rate of increase in solubility in grams per degree?
Is the dissolution of borax in water a temperature dependent reaction or is it spontaneous at all temperatures at which water is liquid?
When doing a recrystallization, why is it important to allow the saturated solution to boil for ~1 minute and cool SLOWLY to room temperature before placing it in an ice-water bath?
Identify three common chemicals found in the home and discuss their potential for toxicological poisoning. Include what treatment, if any, is appropriate in these poisoning cases. Please cite a reference source for your response.
titanium dioxide tio2 is prepared by reaction of ticl4 with o2 at high temperature.ticl4o2 --gt tio22cl2how many
draw the structures of 1,1-dimethylcyclopropane and 1,2-dimethylcyclopropane. Is it possible to have 1,3-dimethylcyclopropane. Is this a correct name and different structure
67 g of ice at 0 degree C added to a sample of water at 6 degrees, all the ice melts and decreases to 0 degrees. how many grams of water was in the sample?
What effect on the temperature of a boiling liquid and on its distillation temperature is produced by a soluble, nonvolatile impurity?
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