Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
consider a 065 m column with van deemter parameters a022 mm b217 mm mlmin and c0018 mm minml if it takes at least 85
the plate height in a particularly packed gas chromatography column is characterized by the van deemter equation with
write an essay about molecular modelling its uses and applications and use a freely available modelling software from
1 calculate the grams of na2co3 required to prepare 2500 ml of 0375 m na2co3 solution2 the reaction of sodium carbonate
a student decomposes a 9317 g sample of a compound containing only nickel and iodine 1245 g of nickel are precipitated
aluminum displaces cobalt from a 02 m solution of cobaltii perchlorate cobalt does not displace chromium from a
the general public often expects solutions to our environmental issues that have zero risk explain if thats
a 187 g sample of mg reacts with 800 ml of a hydrochloric acid solution ph -0544 what is the ph of the solution after
if it is considered that drinking 800nbspmlnbspof water per day containing an arsenic concentration equal to the us epa
an empty 100-ml measuring cylinder weighs 132456 gnbsp when filled with rice to the 100-ml mark it weighs 220345 gnbsp
potassium sulfate is commonly used in fertilizers an agricultural researcher in alaboratory measures and weighs a
what is the most polar molecule it is not hf hydrofluoric acid can you please explain what that is the
can you please describe each question and why the answer is that 1 what is the strongest metal 2 the strongest alloy 3
1 the general public often expects solutions to our environmental issues that have zero risknbsp explain in less than
imagine you are performing a calorimetry experiment using a constant-pressure calorimeter first you calibrate the
for this question imagine that sea water is a 35 mass solution of nacl with a density of 100gml assume full
the number of moles and the mass of magnesium carbonate mgco3 required to produce 283 g of carbon dioxide mgo is the
pyridine c5h5n is a weak base pkb 874 with an unpleasant sweet fishy odour in a titration 1750ml of pyridine solution
lactic acid c3h603 which occurs in sour milk sauerkraut and sore muscles is weak monoprotic acid ka 000014a calculate
a how many milliliters of a 072nbspmhclnbspsolution do you need to obtain 00032nbspmolnbspofnbsphclb a flask containing
analyzed individually two solutes have retention times of 17 s and 21 s with peak widths at half-maximum w12 of 19 s
1 a buffer system contains 018nbspmnh4nbspand 014nbspmnbspnh3nbsppkanbspofnbspnh4nbspis 925 how many moles
a 200 g sample of water with a temperature of 32c is added to 50 g water at 55cin an insulated container what is the
draw diagrams to show the various orientations in which a p orbital and a d orbital on adjacent atoms may form bonding
why is the freezing point of water set at 32ordmf why does the fahrenheit scale start at