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a compound with a molar mass of about 42 gmol contains 857 carbon and 143 hydrogen by mass write the lewis structure
a local am radio station broadcasts at a frequency ofnbsp579nbspkhzcalculate the wavelength at which it is
how do i determine the number of electrons protons and neutrons in each isotope of titaniumj
the molality ofnbsppotassium bromidenbspkbr in an aqueous solution isnbsp164nbspmolkgnbspwhat is the mole fraction
the epas secondary standards for contaminants that may cause cosmetic or aesthetic effects in drinking water suggest an
volume can be measured by displacement of a liquid an object is an irregular shape and has a mass of 11214 g you put
round the answer to the following problem to the correct number of significant figures140186 000458 150032 099542
what is the vapor pressure of 1000 g of water after addingnbsp3418 g of kno3nbspassume theoretical vant hoff
a local am radio station broadcasts at an energy ofnbsp584times10-31nbspkjphotoncalculate the frequency at which it is
two weeks ago the ocean froze over near the coast while the air temperature reached -28nbspoc the ocean waternbsponly
a local am radio station broadcasts at an energy ofnbsp404times10-31nbspkjphotoncalculate the frequency at which it is
1 determine the number of electrons protons and neutrons in each isotope of titanium based on the table below determine
calculatenbspdeltahnbspin kjmol for the reaction described by the equation6 nh3g 7 o3gnbsprarrnbsp6 no2g 9
you recovered 595 g of solid alcl3 when 50 g of gaseous cl2 is reacted with excess solid al what is the percent
what safety precautions should be taken give reasons for your answer critically analyse any faults that could occur in
describe two sources of error that could have been present while doing the experiment determining ksp
for the process hno3g hno3l deltahdeg is -3904 kjmol and deltasdeg is -11174 jmol k what is the normal boiling point
what is the percent composition of each element in the formula for potassium phosphate k p and o
describe the main challenges that scientists face in collecting data and making observations on how the road was made
a charge is placed at x 0 meters and another charge of 5 micro-coulombs is placed at x 5 m both on the x axis the
please explain in detail thank you1predict the sign of deltas for each processthe boiling of wateri2g rarr i2scaco3s
certain popular antacids are dissolved in water with much fizzing and are taken in the form of a solution when the
please show all steps and calculations 1 in france grapes are 195 euros per kilogram what is the cost of grapes in
calculate the work w in j when 48 litre of an ideal gas at an initial pressure of 281 atm is expanded isothermally to a