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Create a procedure of not more than 5 steps that you think will work to compare the efficiency of the light emitted by an incandescent light bulb to that emitted by a fluorescent light bulb. Make su
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship. Explain why all comparative measurments for this experiment sh
purified a new protein and find that it contains 0.154 percent Mn. Assuming that there are three atoms of manganese per molecule of protein, what is the molar mass of the protein
what is the molarity of a 99.O mL ethanol solution containing 8.11g of ethanol (C2H5OH)
How would you prepare methyl,phenyl,ketone starting with 1-bromobenzene without using a grignard reaction. please show reactants and intermediates
How would the calculated molar mass change(increase,decrease,no change) if the following experimental problems were encountered? explain the reason for your answer. (a)the unknown was impure and onl
the vapor pressure of mercury Hg is .00180 mmHg at 77F. if Hg vapor reached equilibrium at this temperature in an enclosed space, what would the concentration of Hg be in the space. Assume normal at
Can someone give me a step by step solution from the Quantatative chemical analysis text from author Daniel c. Harris(the 8th edition) problem CH4-4-E. It about a confidence level.
why do we have to make sure we light the fire and remove the lighter quickly to burn the nuts
If 250.0 mL of 0.354 M Phosphoric acid need to be prepared, how many grams of H3PO4 need to be added to water to make this solution
so I have the reaction CuCl2 + H4ClSiO4. what I dont have is what this makes afterward, could someone please explain to me what the Molecular, total ionic and net ionic equations would be
100 ml sample of hard water is titrated with the ETDA solution in problem 2. the volume of EDTA required to reach the end point is 22.44 ml
Complete combustion of 7.60 g of a hydrocarbon produced 24.3 g of CO2 and 8.70 g of H2O. What is the empirical formula for the hydrocarbon?
Lead ions can be removed from solution by precipitation with sulfate ions. Suppose that a solution contains lead(II) nitrate. Write complete ionic equation to show the reaction of aqueous lead(II) n
The crystal structure of an element X can be described as follows: X atoms form a face-centred cubic lattice with an edge length of 356.7 pm. In addition, there are X atoms occupying every other tet
A 0.2500 g sample of impure potassium chloride was treated with an excess of AgNO3. The precipitate was filtered, washed, and dried in a crucible with an empty mass of 34.9736 g.
5.00 mL of a 0.650 M solution of oxalic acid are dilute to 25.00 mL. If 27.11 mL of a NaOH solution are required to neutralize this diluted oxalic acid, what is the concentration of the NaOH in mola
Give that 41.05mL of 0.551 M NaOH are needed to react completely with 5.343 g, sand-contaminated sample of benzoic acid (C6H5OOOH, a monoprotic acid,) answer the follwing questions.
Assuming the only weight loss for the rat is the loss of CO2 gas (i.e. water is retained), how many grams does the rat weigh once the sugar is metabolized?
How is temperature correlated with the relative rates of this reaction. What is your explanation of this correlation
what does the product and balanced equation of NaOH+NH4HCO3 come out to be? Also what would the product and balanced equation of CuSO4 + a nail be and NH4HCO3 + heat be
what doe the product and balanced equation of NaOH+NH4HCO3 come out to be. Also what would the product and balanced equation of CuSO4 + a nail be and NH4HCO3 + heat be
Select the smaller ion in each of the following pairs. using the format [Ca]2+ for Ca2+.