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A ball with a mass of 0.15 kg is falling at 8 m/s just before hitting the floor and rebounds at 5 m/s. The collision with the floor lasted 0.03 s. What force did the floor exert on the ball?
Explain A silver block, initially at 56.2 C, is submerged into 100.0 g of water at 24.4C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 27.4 C. Define What is the mass of the Silver Block
What wavelength is expected for light composed of photons produced by an n=3 to n=1 transition in a hydrogen?
a solution is prepared by condensing 4.00l of a gas measured at 27degc and 746mmhg pressure into 580g of benzene.
The liquid contains 42.5 mole% benzene and the vapor contains 73.5 mole% benzene. -Calculate the heating requirement for this process in kW. -Using Raoult's law determine whether or not the given benzene analyses are consistent with each other
Question- How much boiling water would you need to raise the bath to body temperature? Assume that no heat is transferred to the surrounding environment.
A lithium atom is contained in a cubic well 10 nm on a side. (a) Calculate the energy (joules) required to achieve the transitions from the ground state to the first excited state for this system
what volume of 0.240 m cacl2 must be added to 335 ml of 0.189 m kcl to produce a solution with a concentration of 0.245
Given the following balanced equation, determine the rate of reaction with respect to the [NOCl]. If the rate of Cl2 loss is 4.84 * 10-2 M/s, what is the rate of formation of NOCl
For a gene suspected of causing hypertension in humans, you observe the following genotype frequencies: A1A1 0.574; A1A2 0.339; A2A2 0.087. Is this gene in Hardy-Weinberg equilibrium
Question- Ramsay calculated atomic weights from the densities he measured. Given the density of argon to be 1.78 g/liter at 273.15 K and standard pressure, calculate its atomic weight.
On being heated with potassium ethoxide in ethanol (70 degrees C), the deuterium-labeled alkyl bromide shown gave a mixture of 1-butene, cis-2-butene, and trans-2-butene. On the basis of your knowledge of the E2 mechanism, predict which alkene(s),..
What is valency of an element. What is the valency of Cl in HCl. What is the valency of nitrate radical in Nitric acid and sulphate radical ion in sulphuric acid. What is the valency of elements which do not combine with hydrogen.
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