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500 g sample of aluminium pellets specific heat capacity 089 j oc-1 g-1 and a 1000 g sample of iron pellets specific
concentrated sodium hydroxide naoh is 194 m has a density of 154 gml and is a strong electrolyte what is the molality
what is the total pressure when 100 l of methane ch4 at stp and 400 l of oxygen at stp are mixed in a 120-shyl
estimate the enthalpy change for the combustion of one mole of ethanol c2h5oh using average bond dissociation
a wire with a length of 16 m and a mass of 062 kg is in a region of space with a magnetic field of 071 t what is the
a buffer solution of a weak acid and its salt had a ph of 551 when the acid was 0221 m and the anion was 0928 m
the first ionization potential of potassium is 419 kjmol if uv-shyradiation with wavelength 250 nm is used to eject
a spring of force constant 205 nm and unstretched length 0260 m is stretched by two forces pulling in opposite
researchers analyzing an unknown hydrocarbon with chemical formula cxhy found that 225 grams of o2g were required for
to stretch a certain spring by 270 cm from its equilibrium position requires 700 j of work what was the maximum force
a particle travels 19 times around a 10-cm radius circle in 36 seconds what is the average speed in ms of the
producing hydrogen atoms from h2 molecules requires 436 kjmol to break h-shyh bonds for the longest-shywavelength
a chlorine-oxygen compound is found to have a chlorine to oxygen mass ratio of 1109 which of the following chlorine to
3-ethylbenzoic acid draw the molecule by placing atoms on the grid and connecting them with bonds include all hydrogen
a sledge loaded with bricks has a total mass of 175 kg and is pulled at constant speed by a rope inclined at 203deg
data cgraphite o2g gt co2g h -3935 kj h2g 12o2g gt h2ol h -2858 kj ch3ohl 32o2g co2g 2h2ol h -7264 kj using the
ag electrode in 10 m ag aq and cu electrode in 10 m cu 2 aq what is the cell potential when the solutions are altered
which is a correct iupac name for ch3och2ch2och3 a 14-dioxane b ethylene glycol dimethyl ether c 14-dioxapentalene d
a block hangs from the ceiling by a massless rope a second block is attached to the first block and hangs below it on
hydride reduction of aldehydes and ketones is a a one-step reaction involving the h- ion b one-step reaction involving
balance the redox reaction below assuming that it takes place in an acidic aqueous solution mno4 - aq so3 2- aq ---gt
consider a uranium nucleus to be a sphere of radius r 74x10-15 m with a charge of 92 e distributed uniformly
a bicycle wheel of radius 030m is spinning at a rate of 60 revolutions per minuit what is the period of the wheels