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Explain Radio waves travel at the speed of light, 3.00x10^8 m/s. if you were to transmit a question to an astronaut on the moon, which is 239,000 miles from earth, Define the minimum time that you would have to wait to receive a reply?
what mass of sucrose should be combined with 455 g of water to make a solution with an osmotic pressure of 8.75 atm at
a copper wire is strectched with a stress of 10ksi at 20deg C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 5ksi
Calculate the mass ( kg ) of the solute C4H8O and the volume ( mL ) of the solvent C6H6 that should be combined to generate 6450 g of a solution that is 2.07 m C4H8O.
What would be the speed of the following particles if they had the same wavelength as a photon of green light (? = 500.0 nm)? Proton (mass = 1.673 × 10-24 g) Neutron (mass = 1.675 × 10-24 g) Electron (mass = 9.109 × 10-28 g) Alpha particle (mass =..
A certain person had a brain that weighed 1.40 kg and contained 4.60 x 10^10 cells. Assuming that each cell was completely filled with water (density = 1.00 g/mL) calculate the length of one side of such a cell if it were a cube.
The density of water is 100g/ml at 4 degrees celsius. How many water molecules are present in 2.56ml of water at this temperature
Consider the fusion of boron 10 with an alpha particle. The products of the fusion are carbon and a proton. a) Write a nuclear reaction for this process.
the average ph of precipitation in rural areas is 6.80. assuming that the phnbspis controlled by the carbonate system
What is the molar concentration of the solution of 37.5g Ba(MnO4)2 per Liter? What is molar concentration with respect for each ion, Ba2+ and MnO42-
A sucrose (C12H22O11) solution that is 45.0% sucrose by mass has a density of 1.203 g/mL at 25 C. Calculate its: a. molarity b. molality c.vapor pressure (vp H2O at 25 C=23.76 mm Hg) d.normal boiling point
Amstop Company issues $20,000,000 of 10-year, 9% bonds on March 1, 2007 at 97 plus accrued interest. The bonds are dated January 1, 2007, and pay interest on June 30 and December 31. What is the total cash received on the issue date?
how much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?119g
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