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What is the energy of 100 photons of Light? And what are the steps?
The excess HCl in the solution required 94.9 mL of 0.128 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
sample of anhydrous salt sodium sulfate Na2SO4 is allowed to absord water to form the decahydrate salt.
Question- I have an unknown Liquid which I need to find the melting point of. I'm thinking I need to crystallize it somehow, and then put the crystal in the melting point machine.
Explain what is meant by the discontinuous emission spectra of atoms (seen in flame tests or gas discharge tubes) and how the Bohr (Planetary) and Schrodinger (Quantum-Mechanical) model for electron structure explains these discontinuous spectra
The second law of thermodynamics can be stated various different ways. One way is to state there is no such thing as a perpetual motion machine. Define how this statement is equivalent to the statement. The entropy of the universe rises for any sp..
A certain microwave delivers 750. watts (J/s) of power to a coffee cup containing 50.0 g of H2O at 25 degrees C. if the wavelength of microwave in oven is 9,75 cm how long does it take and how many photons must be absorbed to make H2O boil
A solution contains 0.625 grams of CA 2+ in enough water to make 1880ml solution, what is the concentration in mEq per liter
Explain why the bond dissociation energy for the C-C sigma bond in propane is lower than the BDE for the C-C bond in propene.
How does raising the concentration of a nonvolatile solute in water affect the subsequent properties- a) vapor pressure b) freezing point c) boiling point d) osmotic pressure.
Problem- How many moles of gas must be forced into a 3.5 L ball to give it a gauge pressure of 10.2 psi at 24oC? The gauge pressure is relative to atmospheric pressure so assume since atmospheric pressure is 14.7 psi the total pressure of the ball..
how many liters of oxygen gas can be produced at STP from the decomposition of 0.250L of 3.00M H2O2 in the reaction according to the chemical reaction shown below 2H2O2(l) ====> 2H2O (l) + O2(g)
a piece of silver 25 g is heated to 100 degrees celsius then dropped into 42.5 g of water with a temperature of 21.7
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