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Suppose we have a solution of lead nitrate, Pb(NO3)2(aq). A solution of NaCl(aq) is added slowly until no further precipitation occurs. The precipitate is collected by filtration, dried, and weighed. A total of 16.54 g of PbCl2(s) is obtained from 200.0 mL of the original solution. Calculate the molarity of the Pb(NO3)2(aq) solution.
2Al(s)+3H2SO4(aq) -> Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 15.5g. What minimum mass of H2SO4(in g) would you need?
Explain what is meant by Chousekeeping gene and why the gene for enolase is not considered a housekeeping gene despite it being expressed in all tissues.
The density of mercury (Hg, a liquid metal) is 13.6 g/mL. What volume would 305.4 grams of mercury occupy
You start with 50 mL of 1.0 M acetic acid. How many mL of the acid should you place in a 100?mL volumetric flask in order to prepare
How many independent linear combinations are possible for four 1s orbitals? (b) Draw pictures of the linear combinations of H1s orbitals for a hypothetical linear H4 molecule
effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
So we did a preparation of t-pentyl Chloride experiment in class the other day using t-pentyl alcohol, HCL, Aqueous sodium Bicarbonate, and calcium chloride as the drying agent.
What conclusions can you draw concerning structures of species containing the same number of atoms and the same number of valence electrons?
How do you write and balance this chemical equation a mixture of benzoic acid (C7H6O2 or C6H5COOH) and 4-t-butylphenol (CH3)3CC6H4OH
The car has a city mileage of 20 miles per gallon. If the car is replaced with the new car with city mileage off 32 miles per gallon and the average cost of gasoline is $3.62 per gallon, estimate the amount of fuel, energy, and money conserved wit..
What is the pH when 100 mL of 0.1 M NH3 is titrated with 50 mL of 0.2 M HCl? pKa of NH4Br is 9.25.
Under these conditions, calculate the final concentration of glycerol-3-phosphate. Remember to convert kJ to J.
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