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Tell wheter each of the experimental errors in Exercise 3 will affect the melting point of the unknown component. If it will, tell how it will affect the melting point and explain why
Why shouldn't you use a spatula to scrape your crystals offthe filter paper
2-bromo-2-methylbutane + H2O. What does that look like when it is drawn? It is an SN1 reaction
If you have 100.0fl of 0.0430uM (alpha)-synuclein solution and 0.0400mg of PC, what is the limiting reactant in the tubule forming the reaction? (760.08106g/1mol PC) (15,400g/1mol(alpha)-synuclein).
The half-life for the radioactive decay of is 5730 years. How long will it take for 20% of the atoms in a sample of to decay. If a sample of initially contains 1.1 of , how many millimoles will be l
(alpha)-Synuclein is a protein that makes membranes, including vesicles bend. It can bend spherical vesicles into tube-like shapes called tubules. The molecular weight of (alpha)-synuclein is 15,400
one of the standard solution had an abnormally low absorbance reading, causing a less positive slope for the data plot. (a) will the equilibrium concentration of FeNCS^2+
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction
A reaction in which and react to form products is zero order in , one-half order in , and second order in .By what factor does the reaction rate change if is doubled
The reaction of water and coal at a high temperature produces a mixture of hydrogen and carbon monoxide gases. This mixture is known as synthesis gas (or syngas). What mass of hydrogen gas can be fo
You react 25.0 g hydrogen gas with 73.7 g oxygen gas. Determine the mass of water that can be produced from these reactants
Using the data below and Coulomb\'s law, calculate the energy change for this reaction (per formula unit of MgS). Mg + S =Mgs
What mass of carbon dioxide is produced from the complete combustion of 1.80×10?3 of methane? Express your answer with the appropriate units.
If it is unnecessary to add an indicator to KMnO4 titration because of its intense deep purple color. will the end point of the titration coincide with the stoichiometric point. explain
The melting point of a pure compound is 152-153 C. Describe the melting behavior for this compound if it is contaminated with 5% of an impurity.
Give the chemical formula and systematic name for aurous sulfide, which is named using the older nomenclature.
For each of the salts listed below indicate whether its water solution would be acidic , basic or neutral. NaBr, Na2Co3, KHSO4, KCN, NH4CH3COO, BaF2
A method for determining the quantity of dissolved oxygen in natural waters requires a series of redox reactions. Balance the following chemical equations in that series under the conditions indicat
Calculate the distances NH# gas and HCL gast would travel in this experiment if a 100.0-cm tube were used, based on the accepted molar masses of the two gases.
How many molecules (not moles) of NH3 are produced from 2.73×10?4 of H2 ? Express your answer numerically as the number of molecules.
Consider a two dimensional potential box (where V= 0 if x is between 0 and a and if y is between 0 and b). Show one example that the energy is degernerated
A 0.85g sample of commercial lye (containing NaOH and other inert ingredients) is dissolved in water and titrated with 37.00ml of 0.525 M HCl. What is the percent purity (mass of NaOH/mass of sample