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1) how much tris (MW 121 g/mol) do you need to make 100 mL of a 20 mM buffer?
2) how much NaCl do you need to make 100 mL of a 5mM solution?
3) how much imidazole do you need to make 100 mL of a 5 mM solution?
4) how much glycerol do you need to make 100 mL of a 10% solution?
5) how much imidazole do you need to make 100 mL of a 20 mM solution?
6) how much tris do you need to make 50 mL of a 20 mM buffer?
7) how much imidazole do you need to make 50 mL of a 250 mM solution?
if 100 ml of 3m hcl is spilled on a lab bench, what is the minimum mass od sodium bicarbonate that must be used to neutralized the acid?
Using a reasonable range of temperatures, determine the apparent (or global) activation energy of NO formation during a combustion process
C2H5OH (l) + 3O2(g) ---------> 2CO2(g) + 3H2O(l) ?H = - 1.37 x 103 kJ When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?
Determine the empirical and molecular formulas of anthraquinone.
Determination of the composition of a mixture You will be given a multi-component mixture and will be required to determine (and confirm) the %composition of the mixture, obtain a sample of each component and to verify its purity and identity.
an ideal gas originall at 0.85 atm and 65 degrees celcius was allowed to expand until its final volume pressure and temperature were 94 mL, 0.60 atm, and 47 degrees celcius respectivily. What was its inital volume?!
What is the nature of the substance(non polar, polar, ionic) and intermolecular force(ionic or van der waals if van der walls give type including h-bond)
Chemistry - Estimation of Mass Required in a Reaction, With the reaction, CaCO3+2Hcl->CaCl2+H2O+CO2. Using percent by mass what is the weight of HCl needed to react
A mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] 5.0 x10-3 M [O2] 1.9 x10-3 M [SO3] 6.9 x 10-3 M Is the reaction at equilibrium
how many moles of ammonia are produced? How many moles of H2 remain? How many Moles of N2 remain? What is the limiting reactant?
The mixture is ignited with a spark and it reacts to form H2O (l)liquid water. determine the temperature of water?
what is the total mass in grams of a series of samples that have masses of 753mg,
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