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what must be the atomic mass of the metal mnbsp if a sample of the compound mso4 weighing 01131 g reacts with barium chloride and yields 02193 g
what is the concentration of the h2so4 if a chemist titrates 3000 ml of sodium hydroxide naoh with a 50 m solution of naoh and needs only 34 ml of
0644 grams each of carbon monoxide water and hydrogen are sealed in a 0987 litres vessel and brought to equilibrium at the temperature of 600 k
c6h14 is an organic solvent that has a density 06603 gcm 3 at the temperature of twenty degree celsius when hexane is added with h2o there is a
nbspif ka1 0059 ka2 65times10-5 and kw 1times10-14 then compute the molarity of c2o42- in 013 m oxalic acidnbsp and express your answer in units
compute the molecular formula of ch3cooh the percent composition of acetic acid is 3999 c and 673 h the remainder of the compound is oxygenthe molar
find the density of a rock is found to have a mass of 338 g when placed in a graduated cylinder containing 400 ml of h2o the level of the h2o is
compute the ph of a solution made by mixing 67 grams of sodium acetate nach3coo to 37 g of acetic acid ch3cooh and dissolving in h2o to form 300 ml
what is the concentration of the new solution if 20 ml of h2o is added to 80 ml of a 030 m solution to make a new solution with a total volume of 100
at ph 5-6 7-amino-2-naphthol undergoes coupling at the 8-position explain whynbsp at ph 10 the coupling occurs at the 1-positionwhat is the final
determine what is the density of the oxygen gas in the full bottle if a cylindrical gas lecture bottle has internal dimensions of 180 cm in
determine the enthalpynbsp for the given reaction as cs2 l 2 o2 g rarr co2 g 2 so2 g if given cs o2g rarr co2g deltahf -3935 kjmolss o2g rarr
compute the activation energy for the flashing process when at 29o c the average rate is 33 flashes every 10 seconds at 23 degree celsius the average
how many grams will remain after 980 daysnbsp if phosphorus-32 has a half-life of 140 days starting with 600g of how many liters of hcl is needed to
a boy wants to prepare a 250ml of a buffer that is ph450 beginning with 100ml of 012 moll ch3cooh and a supply of 010moll sodium hydroxide explain
estimate the ph and the concentration of all species in solution at equilibrium for a 015 m solution of ascorbic acid or h2c6h6o6 for ascorbic acid
determine the kinetic energy of the emitted electrons when cesium is exposed to uv rays of frequency 13 x 1015 hz express your answer in
what is the concentration of nh3 in a solution if 200 ml of a 01145 m solution of hydrochloric acid are required to titrate a 1000 ml sample of the
two hypothetical ionic compounds are discovered with the chemical formulas acl2 and bcl2 where a and b represent symbols of the imaginary elements
a mixture of three gases x y and z is at a total pressure of 725 atm the partial pressure of gas x is 184 atm that of gas y is 368 atm what is the
what would be the formula for the compound sample if a sample of a compound contains 136 mol of nitrogen atoms and 272 mol of oxygen atomsconsidering
determine the molar mass of the substance if 1200 grams of a pure sample contained 240 mol of the substance express your answer in gmolx is an
in a batch reactor the decomposition of species a follows n-th order kinetics as a-gtb rk cnthe conversion of a reaches 50 in a five minute run what
when an unknown compound z of 951 grams was added in 92 grams of c6h6 benzene determine what is the mole fraction of x nbspnbsp if the vapor pressure
determine how many moles of cation are produced when 646 grams of nh4cl is dissolvednbspcompute the difference in the ionization energies for the 1h