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The water level in a graduated cylinder initially at 223mL rises to 279mL after a piece of lead is submerged. What is the mass in grams of the lead? Express your answer using two significant figures.
Lead Density (g/mL) is 11.3
Acetic acid has a density 1.05 g/cm3 and mass percentage 99, calculate the molarity, molality, and mole fraction *100g of each solution * MW = 60.05
What is Change in Enthalpy for the formation of 1 mol of acetylene. (c) Which is more likely to be thermodynamically favored, the forward reaction of the reverse reaction
what will be the temperature of the system when equilibrium is established? Â (sp Heat of H2O(s) = 2.09j/g . c (sp heat of H2O (l) = 4.18 J/g.c) Heat of Fus. of H2O(s)=333j/g
If human height were quantized in one-foot increments, what would happen to the height of a child as she grows up
Every measurement has a measurement uncertainty. Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty. You could use either of the two options given below.
Presume that gasoline can be represented as consisting completely of C8H18. Gasoline has a density of 0.85 g cm- 3. Presume that combustion of CgH18 leads to CO2 and H2O. Explain how many kilograms of CO2 does your driving contribute to the atmosp..
Every measurement has a measurement uncertainty. Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty.
Calculate the value of w (work) for the following system if 20.4 g of NaN3 reacts completely at 1.00 atm and 22 °C.
The pressure of a gas sample varies inversely with the volume. ----E) All gas samples of the same volume at STP contain the same number of molecules.
The restriction enzyme, SstI, cuts phage DNA at positions 24,472 and 25,877. Draw a picture of the gel you will see if it is used as the mystery enzyme.
Find the concentration of Cu2+ in equilibrium with CuBr(s)and 0.10 M Br
A 8.90g sample of lead nitrate was heated in an open container to cause decomposition. Calculate the theoretical yield of PbO in grams.
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