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Estimate the temperature needed to achieve the fusion of deuterium to make an alpha particle. The energy required can be estimated from Coulomb's law. You can use the form E=9.0x10^9 (Q1Q2/r). Q=1.6x10^-19 C for a proton and r=2x10^-15 m for the helium nucleus. The units for the proportionality constant in Coulomb's law is J*m/C^2.
What is the heat change in J associated with 73 g of solid butane at -147 C changing to liquid at -109 oC?
How many grams of magnesium may be formed by the passage of 76.0 amps for 8.03 hours through an electrolytic cell that contains a molten magnesium salt.
A vitamin tablet contains 789 mg of vitamin C (C6H8O6). How many vitamin C molecules are contained in the tablet? Enter your answer in scientific notation.
A metallic solid with atoms in a face-centered cubic unit cell with an edge length of 385 pm has a density of 6.84 g/cm3. Calculate the atomic radius of the metal.
Determine the enthalpy of the reaction. Assume that the density and the specific heat of the solution are the same as water. Incude the correct sign.
Amount of H2O2 in 15.8 g of hair bleach was obtained by titration with a standard KMnO4 soln.
Calculate the wavelength and frequency of an emitted gamma particle having the energy of 1.29x 10^11 J mol. Enter in scientiic notation.
find the number of representative particles in each substance a)3.00 mol Sn b)0.400 mol KCI c)7.50 mol SO2 d)4.80x103 mol NaI
How much limestone would be required each year in order to remove sulfur dioxide from a power plant whole daily consumption of coal
a solid with an irregular shape and a mass of 11.33 g is added to a graduated cylinder filled with water
The volume of a 24.0-g sample of methane gas is 22.8 L at 40.0°C and 4.00 atm. What will its volume be at 68.0°C and 4.00 atm.
Write a formula for the conjugate base formed when each of the following behaves as a bronzed acid.
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