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A 44.0 g sample of an unknown metal at 99.0 ooo C was placed in a constant-pressure calorimeter of negligible heat capacity containing 80.0 mL water at 24.0 C. The final temperature of the system was found to be 28.4 C.
Calculate the Specific heat of the metal if density of water is 1.00 g/mL.
Assuming ideal gas behavior, calculate the mass of (in ) present in the reaction mixture at equilibrium. What is the percent yield of the reaction under these conditions
We often hear that the United States is a "middle-class" society. Where does this idea come from, and how true is this claim? Explain.
The Cl^- concentration in the water analysis given has been questioned. What concentration of Cl^- (mg/L) would make the cations and anions balance?
Explain what is the relationship between polarity of a drug and toxicity and why is this case? In other words, are non-polar or polar molecules more toxic to the human body, and why.
indicate the direction of the bond polarity of NH3 and CH4. are either of the molecules polar. is ClH3 polar. why or why not.
chlorine reacts with pentane to form a varietyof products. draw the mechanism for the formation of 2-chloropentane.
Lactic acid, C3H6O3, is a monoprotic acid that is available in solid form. Determine the concentration of an unknown solution of sodium hydroxide
the molar or milli or micro molar concentration of adenosine when 3ul of the 0.4 control is dissolved in 3 ml of 1 m
a balloon that contains 0.500 l of helium at 25 c is cooled to 11c at a constant pressure. what volume does the balloon
Arrange the following solutions in order of decreasing freezing point- 0.20 m MgCl2, 0.15 m C6H6, 0.10 m CrBr3, 0.15 m CH3CH2COOH, 0.35 m NaCl.
Consider the reaction of 25.0 mL of 0.20 M AgNO 3(aq) with 25.0 mL of 0.20 M NaBr(aq) to form AgBr(s) at 25 °C. What is ?G for this reaction? The K sp of AgBr is 5.0 x 10 -13 at 25 °C.
show the path an electron takes when orbiting an atom describe regions of space in which one is most likely to find an electron.
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