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Explain a certain anesthetic contains 64.9 percent C, 13.5 percent H and 21.6 percent O by mass. At 120°C and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30 g. Explain what is the molecular formula of the compound?
An aqueous solution of sodium hydroxide reacts with an aqueous solution of ammonium chloride, yielding aqueous ammonia, NH3, and water
1. for the term symbolsnbspnbsp 3d 4d and 2gnbsp write the designation including the j values.nbsp in each case pick
Two 20.0-g ice cubes at -16.0 °C are placed into 245 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate: 2NH4Cl(s)+Ba(OH)2 * 8H2O(s)-----2NH3(aq)+BaCl2(aq)+10H2O(l)
Calculate deltaH degrees for each of the following reactions: 4Na(s)+O29g) 2NaO(s) 2Na(s)+2H2O(l) 2NaOH(aq)+ H2(g)
How much potassium oxalate can be added to 158.0 mL of 0.35 M [Cu(NH3)4]Cl2 before a precipitate of CuC2O4 begins to form?
A steam turbine receives a flow of 10,000 lb of steam per hour and delivers 500 kW in that period. Heat losses from the casing and the turbine bearings may be assumed neglible
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
Determine the new equilibrium concentration of hydrogen, if the hydrogen concentration is raised by 0.299 M?
Explain why the optically pure ketone (R) 3-methyl-2-hexanone gives a racemic mixture when exposed briefly to aqueous acid, whereas (R) 3-methyl-3-ethyl-2-hexanone remains optically pure under the same conditions.
how many ml of 4.50 m sodium hydroxide must be added to 250 ml of a 0.200 m acetic acid solution to make a buffer with
a power company converts 40 percent of the heating value of the oil it uses into electric power. homeowners can buy
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