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how many grams of ethanol molar mass 4607 gmol are in a 275 ml sample of a solution which is 20 ethanol by volume in
at stp 500 ml of a gas weighs 0301g and is found to be 474 sulfur and 526 chlorine what is the molecular formula of the
when aqueous solutions of silver nitrate and sodium sulfide are mixed a reaction occurs what are the spectator ions in
for the reaction given below how many grams of na2cs3 are produced in the reaction of 650 ml of liquid cs2 d 126 gml
what is the ph of a solution containing 25 ml of 010 m acetic acid after 10 ml of 010 m naoh is
1 the face-centered gold crystal has an edge length of 407 pm based on the unit cell calculate the density of gold2
for a tellurium-132 sample 6566 counts were observed between 50 and 80 hours after the preparation of the source how
if the work function of a metal is 439 ev what is the maximum wavelength of light that can be used to observe the
taking 100 kg of the 20 feed solution as a basis draw and label a flowchart of this process labeling both masses and
molecular hydrogen can be made from methane gas by the reaction below how is the rate of disappearance of ch4 related
it takes 10 microliters to produce a spot 1cm in diameter if cono32contains 6 g co2 per liter how many micrograms of
what monatomic ions do sulfur z 16 and aluminum z 13 form type your answer using the format cu for cu and cu2 for
describe six physical and six chemical changes explain why each is a physical or chemical
the standard enthalpy of sublimation of carbon dioxide is 263 kjmol at 190 k estimate the standard enthalpy of
a stoppered flask at 25degc contains 250 ml of water 200 ml of octanol and 50 ml of air an unknown amount of o-xylene
if 10 mg of naphthalene is added to 1 liter of water in a 20-liter sealed bottle the solubility of naphthalene is 26 x
a solution is prepared by adding 20g of magnesium hydroxide solid to 2l of water that contains 10-5 moil of caoh2
1500ml of radiator liquid water ethylene glycol from a car has a mass of 1569g is the denisty of ethylene glycol
the element platinum has a solid-state structure in which platinum atoms are arranged in cubic shape that repeats
mercury ii nitrate will react with potassium iodide to form mercury ii iodide and potassium nitrate if 200 grams of
explain the results for the tube in which 10 m of naoh was added to benzoic acid write an equation for this now
a copper refinery produces a copper ingot weighing 150lb if the copper is drawn into wire whose diameter is 750mm how
the concentration of carbon monoxide in an urban apartment is 48 micrograms per cubic meter what mass of carbon
500g of fe2o3 reacts with an excess of hcl to make fecl3 and h2o how many grams of fecl3 can i make if the reaction is
2c4h10 13o2---gt 8co2 10h2oif n grams of h20 are formed in the above reaction obtain an expression in terms of n