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The mass of an electron is 9.11\times 10^{-31}~\rm kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31\times 10^{-10}~\rm m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00\times10^8 ~\rm m/s.
Consider 4.90 L of a gas at 365 mmHg and 20. degrees celisus . If the container is compressed to 3.00 L and the temperature is increased to 40.degrees celisus , what is the new pressure, P2, inside the container
what is the concentration of a naoh solution if 34.98 ml of it reacted with 1.9278 g of khp? mwkhpnbsp 204.23 gmol. a
While Xeloda works well, it is effective for colorectal tumors and liver cancer. What are the drawbacks for extending this therapy to other types of cancer?
what is the density of the block? How to approach the problem The apparent mass of the object in the fluid, 5.6 , is equal to its mass in air, 50.0 , minus the mass of the displaced fluid
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
Elemental phosphorus reacts with chlorine gas according to the equation: P4 (s)+ 6Cl2 (g) --> 4PCl3 (l) A reaction mixture initially contains 45.11 g P4 and 132.0g Cl2. Once the reaction has occurred as completely as possible, what mass (in g) of ..
Compute the number of grams of H 2 SO 4 in 1 gallon of battery acid if the solution is 38.9% sulfuric acid by mass and has a density of 1.33g/mL ?
An additional atm pressure of HI is admitted to the con- tainer, and it is allowed to come to equilib- rium again. What is the new partial pressure of HI?
What partial pressure of dinitrogen monoxide gas is required in order for 0.00280 g of the gas to dissolve in 11.4 mL of pure water. The Henry's Law constant for dinitrogen monoxide gas is 2.4 x 10-2 M atm-1.
A solution was made by dissolved 2.0 g of an unknown non-electrolyte in 25 g of acetic acid. The solution boiled at 119.6 degrees C. Calculate the molar mass of the non-electrolyte.
6naoh 2al -gt 2na3alo3 3h2what volume of hydrogen gas measured at stp would result from reacting 75.0g of sodium
By comparison, what would it cost to heat the home using a ground source heating system with an electrically powered heat pump that has a COP of 5.0?
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