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Two frictionless roller-coaster cars sit atop identical roller coaster tracks. The two roller-coasters meet at the bottom to form a single continuous roller-coaster track. The more massive car has mass M, the less massive has mass m. Neglect air resistance.
a) If the two cars are released simultaneously from rest, describe in words where the two cars collide.
b) If when they collide, the two cars stick together, calculate the highest height the two cars will ultimately reach after they stick together, expressed in relation to their original height.
If a saturated solution of substance a in 100.0 g of water is cooled from 30 c to 10 c, what mass solid solute would crystallize out? Show your work.
What evidence exist to support the theory that an atom contains a massive nucleus that is very small relative to the size of the whole atom
bathophenanthroline is a compound that forms a red complex with ironii. the molar absorptivity for the complex is 22350
What would be the effect on the pH of adding 10 mL of 2 M sodium hydroxide to the original buffer. What would be the effect on the pH of adding 100 mL of 2 M sodium hydroxide to the original buffer
A compound contains only carbon, hydrogen and oxygen. Combustion of 7.30 mg of the compound yields 10.68 mg of carbon dioxide and 4.37 mg of water. What is the empirical formula of this compound
A sulfuric acid solution is added to scale-forming water to convert calcium carbonate to calcium bicarbonate. Write the chemical equation for this reaction, and calculate the amount of sulfuric acid in milligrams per liter to neutralize 20 mg/l of..
Calculate the pH after 0.015 mol solid NaOH is added to 1.00 L of a solution containing 0.050 M propanoic acid (HC3H5O2, Ka = 1.3 x 10 -5) and 0.080 M sodium propanoate (NaC3H5O2)
calculate the mass of propylene glycol c3h8o2 that must be added to 637 g of water to reduce the vapor pressure by 4.74
A 10.0 ml sample of hcl is titrated with 0.5062 m naoh. 16.58 is required to reach the equivalence point. what is the molarity of the hydrochloric acid solution
A student made an acetic/acetate buffer by mixing 4.665 g of sodium acetate into 600.00 mL of a 0.0242 M acetic acid solution. What would the pH of the solution be as the result of the addition of 0.0050 mols of hydrochloric acid to the buffer
What mass of CCl2F2 substance must evaporate in order to freeze 135 g of water initially at 15 degrees celsius? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/gK .)
which of the four main categories of biological compounds-carbohydrates lipids proteins and nucleic acids-contains the
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