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A sample of unknown gas at STP has a density of 0.630 g per liter. What is the gram molecular mass of this gas?
The men's world record for swimming 1500.0m in a long course pool( as of 2007 is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.550miles. (1 mi =1609m)
A 2.30 L sample of neon at 5.35 atm is added to a 10.0 L cylinder that contains argon. If the pressure in the cylinder is 7.00 atm after the neon is added, what was the original pressure (in atm) of argon in the cylinder?
The save drinking water act sest the limit of mercury at 1*10^-8. Suppose water becomes contaminated at twice the legal level. How much water would you have to drink to ingest 50mg Mercury
What is the pH of a 25.00 mL solution of 0.10 M CH3CO2H? What are the concentrations of OH- and CH3CO2? Ka = 1.8 x 10^-5
determine the mass of lithium hydroxide produced when 0.38 grams of lithium nitride reacts with water according to the following unbalanced chemical equation
Question- Automobiles and trucks pollute the air with NO. At 2000 degrees C, Kc for the reaction is 4.10 x 10^ -4, and delta H = 180.6 kj. What is the value of Kc at 67 degrees C
Problem- A student mixes 45.0 mL of 3.32 M Pb(NO3)2(aq) with 20.0 mL of 0.00245 M Na2C2O4(aq). How many moles of PbC2O4(s) precipitate from the resulting solution. What are the values of [Pb2 ], [C2O42-], [NO3-], and [Na ] after the solution has r..
Draw Lewis structures to determine which of the following compounds exhibit resonance. Enter the letters corresponding to all those compounds which exhibit resonance
When hydrochloric acid comes in contact with potassium permanganate, what dangerous chemical is released?
Write equations that describe the reaction mechanism for acid hydrolysis of the following compound- (A) Acetyl Chloride
Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Zn2+(aq)+2e??Zn(s)
a gas at 350k and 12 atm has a molar volume 12 larger than that calculated from the perfect gas law. calculate a the
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