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given the density of titanium metal is 451 gcm3 at 25 c what mass of titanium displaces 1250ml of water at 25
two adjacent natural frequencies of an organ pipe are found to be300hz and330hza calculate the fundamental frequency
a pipe open at both ends has a fundamental frequency of240hz when the temperature is 0degca what is the length of the
a steel wire with mass218g and length16m is strung on a bass so that the distance from the nut to the bridge is 110 ma
determine the values of km and vmax for the decarboxylation of -keto acid given the following datasubstrate conc mol
a machine shop has 100 equally noisy machines that together produce an intensity level of 90db if the intensity level
write the total and net ionic equations for the reaction of baso4 dissociation and calculate the trial ksp for the
predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixeda mncl2
concentrated sulfuric acid is used as a catalyst for the esterification of acetic acid in the preparation of isopentyl
a bottle has a mass of 3500g when empty and 9844g when filled with water when filled with another liquid the mass is
1 a solution is prepared by dissolving 0112 g of cacl2 in 100 g of water the osmotic pressure of this solution is found
a solid sphere has a temperature of 408 k the sphere is melted down and recast into a cube that has the same emissivity
a 14kg grindstone in the shape of a uniform cylinder of radius 02m acquires a rotational rate of 1800 revs from rest
assume that you have an aqueous solution of an unknown salt treatment of the solution with dilute naoh na2so4 and kcl
in a house the temperature at the surface of a window is 23degc the temperature outside at the window surface is 4degc
one end of a brass bar is maintained at 298degc while the other end is kept at a constant but lower temperature the
a neon sign is made of glass tubing whos inside diameter is is 25cm and whose length is 55m if the sign contains neon
a substance has an extinction coefficient of 5 x 105 l cm-1 mol-1 a concentrated solution of this substance has an
a sample of an unknown material appears to weigh 285 n in air and 180 n when immersed in alcohol of specific gravity
a spherical weather balloon is filled with hydrogen until its radius is 310 m its total mass including the instruments
a gas while expanding under isobaric conditions does 500 j of work the pressure of the gas is 16 105 pa and its initial
1g of acetanilide was reacted with 045g of sodium bromate and 13mmol of hbr what is the theoratical yield of the
a calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 238 m assume the density of the
a high-speed lifting mechanism supports a 790-kg object with a steel cable that is 320 m long and 400 cm2 in
calculate the ph of 0510 l of a 0220 m nh4cl and 0220 m nh3 buffer before and after the addition of the following