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A recent study found the median level of lead ion concentration in Canadian tap water is 2.3 x 10-8 mol/L. Calculate the mass, in grams, of lead consumed when an individual drinks 2.3 L of water.
Record your final, 2-digit answer using scientific notation. Also include proper units.
Explain why acetone in the cyclohexane would invalidate the experiment?
If the coal is burned in teh DPH power plant that uses 2300 tons of coal per day, what is the daily production of calcium sulfite, if the conversion is 98%? if 50 pounds of calcium oxide costa $13.50 how much does DPH power plant per day for CaO
2 components mixture give the tlc shown when 1:1 mixture of hexanes:ethyl acetate is used as the developing solvent which components is more polar and how can you tell?
A solution containing 29.85 mg of an unknown protein per 25.5 mL solution was found to have an osmotic pressure of 3.85 torr at 21C
Selenious Acid, H2Se)3, is primarily used to chemically darken copper, brass, and bronze. It is a diprotic acid with the following Ka values: Ka1 =2.7x10-3 and Ka2= 5.0x10-8.what is the pH of a 2.89 M solution of selenious acid?Estimate [HSe)3-] a..
Determine the electronegativity of each pair of elements? Also, classify each bond as pure covalent, polar covalent or ionic.1. K and Cl2. N and N3. C and S
the red lice in the hydrogen spectrum is caused by the electron moving between which two energe levels? (the ionization energy of a hydroge atom is 2.18X10^-18J)
The reaction 2NOCl(g) → 2NO(g) + Cl2 (g) has an activation energy of 100.0 kJ/mol and a rate constant at 400.0 K of 8.5 x 10-6 mol-1 L s-1. Determine the rate constant at 450 K.
Draw the expected d-orbital splitting for the d-orbitals in a trigonal planar complex ion. Assume the z-axis is perpendicular to the plane of the complex. In a couple of sentences, explain the logic behind your splitting diagram.
Problem- Write the balanced equation that make the following binary ionic compounds and provide names for the ions and the compounds.
Calculate the heat evolved when 85.0 g of CH3OH (g) burns (assume excess O2 (g)) and calculate the mass (#grams) of O2 (g) consumed when 500 kJ of heat is produced by this reaction.
Determine the a) heat of vaporization of bromine b) vapor pressure of bromine at 50oC
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