What are the mole fraction and the mass percent of csbr
What mass of cesium bromide must be added to .500 L of water (d =1.00g/mL) to produce a 0.687 m solution? What are the mole fraction and the mass percent of CsBr?
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Dopa (Levodopa) is an oral medication used to treat Parkinson\'s disease, the symptoms of which result from a lack of dopamine in the brain. L-Dopa relies on L-type, or leucine-preferring, transport proteins to cross the blood-brain barrier
Oxygen is more electronegative than nitrogen, fluorine is more electronegative than the other halogens. Fluoride is a stronger field ligand than the other halogens, but ammonia is a stronger field ligand than water. Why
A white powdery solid, and asked to evaluate its purity and to determine whether it might be identical to a given sample of an illegal drug, a white crystalline solid. Clearly explain what you would do, and how you would interpret your results.
The possible compounds are listed below. Two methods of positive identification are required for each compound. Benzoic acid benzoin 1,4-dibromobenzene flourene o-Toluic Acid 4-aminoacetophenone
Write equations for the folowing seperations. indicate any condition required for the reactions to occur, such as p.H 5. Fe2+ from Cr3+ ions
Small quantities of oxygen can be prepared in the laboratory by heaing potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3 arrow 2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 26.6 grams of KClO3(s)
NH4ClO4 ignites and burns in the absence of any other material to produce N2, HCl, H2O and O2. Write the balanced chemical equation for this process and determine the mass of H2O produced.
Mass(volume)of cold water:75.0g Temperature of cold water: 23.0 degree celsius Mass(volume) of hot water: 75.0g Final temperature: 41.1 degree celsius find the temperature change and the calorimeter constant.
Frank and Oswalt report a molar absoptivity of 4700 L mol -1 cm-1 for the thiocyanatoriron(III) ion. What % T would you expect for a solutions that is 1.0x10-4 M in thiocyanatoiron(III) ion, if the path length is 1.00 cm?
0.80g of sodium hydroxide (NaOH) pellets are dissolved in water to make 6.5L of solution. What is the pH of this solution?
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