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Bronze is an alloy of copper (MM 63.55) and tin (MM 118.7). If a 105.0 gram block of a bronze alloy has a heat capacity of 28.4J/K, determine the mole fraction of copper in the alloy. The Dulong-Pe
Compute the mass of the moon according to such data. Compute the ratio of masses (moon to earth). Compute the ratio of densities (moon to earth).
On her two day hike, she found that six miles more than one half of the trip was same as two-thirds whol trip. Determine distances in miles which she traveled?
In a double slit apparatus, the slits are apart by 150µm. The light of wavelength 5893Å is incident normal to the plane of the slits. An interference pattern is viewed on a screen 16.4 f
How can determine the hydronium ion concentrate and the hydroxide ion concentrate in the blood, the pH of which is 7.3 (slightly alkaline)
NASA would like to make a ring-shaped space station with artificial ‘gravity’ by spinning the ring similar to a centrifuge. Assume that the radius of the ring is around 160 m. What perio
Determine the three fractions of a perfume and how do these fractions differ at the molecular level?Determine what type of detergent is used in baby shampoos? Why?
Assume that the electric potential energy lost by the system is carried off by a photon which is emitted throughout the process. Determine its wavelength (in nanometers)?
The ball of billiard moving with initial velocity of 10.0 m/s toward the stationary second billiard ball of similar mass. State the velocity of each ball after the collision. Suppose that the collis
When the wavelength of light employed above is 600 nm in air, compute the wavelength in both the water and glass.
Determine the role of carbohydrates in the diet?Calculate the role of proteins in the diet?
After the addition of 10.0mL of 0.200M hydrochloric acid (HCl), 0.213g silver chloride was recovered. An impure sample of silver nitrate (Ag (NO3)3) weighing 0.340g was dissolved in the water.
The image of a very distant car is positioned 12 cm behind the convex mirror. The radius of the curvature of the mirror is around 24 cm. i) Sketch a ray diagram to scale showing this scenario.
Determine the numbers of molecules of methylene blue dye are in a 256-fold dilution of a 0.00025% methylene blue dye stock solution? The molecular weight of methylene blue is 373.9 g/mol.
The compression strength of concrete (that is, the maximum pressure which can be applied on the base of the structure) is 1.5 × 10^7Pa. Determine the height of the tallest cylindrical concrete
Determine the three fractions of a perfume? How do these fractions differ at the molecular level? Calculate the two major categories of food additives?
The density of sodium chloride is 2.165 x 103 kg/m3. Compute the spacing between adjacent sodium and chloride ions in the crystal.
Explain what United States government agency regulates the use of food additives and what must be done before a food company can use a new food additive.
By using 2.30 x 1017 kg/m3 as the density of nuclear matter, determine the radius of a sphere of such matter which would encompass a mass equivalent to that of Earth. Earth consists of a mass equiv
Discuss how much energy is supplied by 1g of carbohydrates?Explain what is a trans fat and how are trans fats made?
If plane's speed would have been 1/2 of actual speed and ship's speed 1/4 greater than actual speed, distance of 1315 miles would have been travelled. Determine speeds of plane and ship.
How can find the pH of the aqueous solution when a solution prepared by dissolving the 0.125 grams of sodium hydroxide (NaOH) in 600 mL of distilled water.
A pharmacy student dissolved the 0.56 grams of potassium hydroxide(KOH) in the distilled water to make 100ml of solution and she label edit solution K.
A radio station is permitted to broadcast at an average power not to surpass 30 kW. If electric field amplitude of 0.024 V/m is considered to be acceptable for receiving the radio transmission, appr
Phenobarbital, a weak acid and a commonly used the hypnotic-sedative drug has a pka value equal to 6.22 and a molecular weight of 232 grams/mole. 0.4884 gm of Phenobarbital was dissolved in 100