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Which particle will move un-deflected through the field if the Alpha particles having speed 1000m/s to2000m/s enters into a velocity selector where the electric intensity is 300 V/m and the magneti
Determine pH of this solution at the 25C when a solution is made up dissolving the 45.0g of "soda ash" (99.0% pure Na2CO3, by weight)) and 20.0g of 100% pure K2CO3 in 5.0Liters of aqueous solution
What do these observations tell us about the nature of the DDT molecules? The pesticide DDT concentrates in the fat of animals and tends to remain in the soil despite heavy rain that washes away oth
How about if the temperature was 60 degrees Celsius? At 10 degrees Celsius, which is more concentrated, a saturated solution of potassium nitrate or a saturated solution of potassium chlorid
Is it correct to say that the only ions an acidic solution contains are H+ ions and that the only ions a basic solution contains are OH- ions? If not what would the correct descriptions of s
As well, suppose that diffraction effects, instead of atmospheric turbulence, limit the resolving power of the telescope. Determine the maximum distance which these stars could be from the earth.
Determine the final temperature of the water when the specific heat of water is 4.184 J/(g*°C) if 35.3 kJ of energy is absorbed by 500.0 g of water at 10.0°C.
Determine the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-). The pH of a bicarbonate-carbonic acid buffer is 7.70.
The light shining on the diffraction grating consists of a wavelength of 476 nm (in vacuum). The grating generates a second-order bright fringe whose position is defined by an angle of 9.45°. De
The loci coding for these traits are linked, In fruit flies, blackbody (b) is recessive to gray body (b+), purple eyes (pr) is recessive to red eyes (pr+), and vestigial wings (vg) are recessi
The thickness of the film is around 254 nm and is the minimum nonzero thickness for which constructive interference can take place. Determine the refractive index of the film?
The female progeny are then crossed with males that have black bodies, purple eyes, and vestigial wings. The interference among these genes is 0.2.
Explain what salt is produced when a solution of calcium hydroxide is neutralized by the phosphoric acid, H3PO4? Can you please give equation to the process also?
What pH would be needed to achieve maximum separation of these ions by precipitation of CaC2O4 if the solution also contains the oxalic acid H2C2O4 at a concentration of .10M?
Determine the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-) when the pH of a bicarbonate-carbonic acid buffer is 7.70.
How can determine the total energy of that pulse if the laser emits a burst or pulse of energy containing 5.0 x 1017 photons of this radiation?
A kinetics study was done to determine the rate law for reaction (1) by carries out trials where aqueous solutions supplying A, E and L were combined, and the time in seconds required for the disapp
From a distance of 170 m, the eagle sees them as one unresolved object and dives toward them at a speed of 16 m/s. Suppose that the eagle’s eye detects light that consists of a wavelength of 5
2.50 M NaOH is titrated with 65.0mL of 1.75M HBr. The HBr is in a beaker and the NaOH is added from the burette in an acid-base titration. Determine the solution in the beaker after: a.) 15.0mL of
The object at rest on a flat, horizontal surface explodes into two fragments, one seven times as huge as the other. The heavier fragment slides 6.50m before stopping. Determine how far does the ligh
What pH must be exceeded before Cu (OH)2 begins to precipitate? The Ksp for Cu(OH)2 is 1.6X10^-19. A student transfers 175.0mL of 0.065 M Cu(NO3)2 to a beaker and then adds aqueous NaOH solution dr
A soap film of n = 1.33 is 476 nm thick and lies on a glass plate of n = 1.52. Sunlight, whose wavelengths in vacuum expand from 380 to 750 nm, travels via the air and hits the film perpendicularly.
Determine the numbers of grams of Mg(OH)2 can be dissolved in the 800mL of an aqueous buffer of pH= 8.5. The Ksp of Mg (OH)2 = 5.6 X10^-12
An object of 2 cm is positioned 6 cm in front of a convex mirror that consists of a focal length of 5.0 cm. Determine the features of the image generated by: i) Drawing a ray diagram
The student heated a sample of the blue solution. After a short time, the solution changed from blue to green. Is the forward reaction endothermic or exothermic? Briefly explain.