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7 find the value of the discriminant and give the number of real solutions 4x2 5x 25a 0 oneb 800 twoc ndash800 noned
16 determine which of the following is not a real numbera ndash712b ndash712c ndash712d ndash712 18 use the properties
1 true or false nbspthe imaginary part of the complex number 2 3i is i 2 perform the indicated operations 7i
3 to solve the equation 7x 5 3x ndash 7first rewrite the equation as fx gx where 6 find the point of
16 graph the inequalityy gt 1 18 graph fx ndash2x 219 find the slope and y-intercept 10x ndash 4y 2420 given gx
1an airplane can fly 400 mih in still air nbspif it can fly 88 mi with a tailwind in the same amount of time it takes
compute the atomic packing factor for cesium chloride assuming thatthe ions touch along the cube diagonals ionic radii
the crystal lattice energy of an ionic solid xy -13310 kjmol the total hydration energy for both x and y- ions is -9545
predict the reactivity of benzaldehyde compared to benzene in a friedel-crafts reaction benzaldehyde is reactive than
a reaction at 183 atm produces 119 l of a gas and evolves 913 kj of heat exothermic calculate the change in internal
calculate w in kj when 566 g iron iii oxide mm 1597 gmol reacts with excess carbon to produce carbon dioxide gas at
it takes 450 to raise the temperature of an 104 piece of unknown metal from 130 to 240 what is the specific heat for
calculate mass of precipitate 500ml of 0200mooll nach2co3 solution is reacted with 200ml of 0450moll agno3 if 138g of
two solutes were used to study diffusion in liquids methylbenzene which is a small molecule that can be approximated as
buckminsterfullerene is an allotrope of carbon in which the carbon atoms form spheres of 60 carbons each in a pure
the diameters of the main rotor and tail rotor of a single-engine helicopter are 144 m and 214 m respectively the
a shot-putter throws the shot mass 73 with an initial speed of 140 at a 320 angle to the horizontalcalculate the
nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen
write balanced ionic equation for the following reaction aqueous hydrofluoric acid is neutralized by aqueous calcium
a woman at an airport is towing her 205 kg suitcase at constant speed by pulling on a strap at an angle of above the
a 300 kg block starts from rest at the top of a 30deg incline and slides a distance of 180 m down the incline in 130 sa
an elevator mass 5000 is to be designed so that the maximum acceleration is 620times102what is the maximum force the
what volume of 01125m copperii chloride solution is required to react completely with 550g of aluminumdescribe in
in the bohr model of the hydrogen atom the speed of the electron is approximately 180x106 msa find the force acting on
whenever two apollo astronauts were on the surface of the moon a third astronaut orbited the moon assume the orbit to