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Problem- A metal whose threshold frequency is 6.71 * 10^14 s^-1 emits an electron with a velocity of 6.95 * 10^5 m/s when radiation of 1.01 * 10^15 s^-1 strikes the metal. Use these data to calculate the mass of the electron
I require skilled aid to answer the given problem
Provide a chemical based explanation for the observation that acid-base neutralization reactions are exothermic
write the equation for self-ionization of water and why ammonia is a weak base.
Why does the absolute refractory period occur and What is happening in the cell.
Naphthalene is the simplest of the polycyclic aromatic hydrocarbons and can be represented by three resonance structures
The common forms of nitrogen and phosphorus are N2(g) and P4(s) respectivly. Account for the difference in terms of the single and multiple
Dissolving NH4NO3 in water is an endothermic process. In fact, this reaction is often used in cold packs sold at the drug store. When 23.8 g of NH4NO3 was rapidly dissolved in 79.5 mL of water in a coffee cup calorimeter,
an alloy that melts at about the boiling point of water has bipb and sn atoms in the ratio1065 respectively. what mass
Describe the mathematical relationship between the number of scans acquired in a NMR experiments and the signal to noise ratio. Be precise.
For the molecule CH3COOCH3, indicate the orbitals involved in the bonding of the carbon and oxygens. Draw a picture to show how the orbitals overlap in both cases.
How many liters of chlorine gas at 650mmHg and 25degress C can be produced by the reaction of 2.0L of 2.50M HCl soultion with the excess Mno2
An empty 5.00- flask is charged with 0.450g of pure H2S(g) , at 25 degrees celsius What is the initial pressure of H2S(g) in the flask
a chemistry student dissolved 500 grams of alcl3 in 2750grams of h2o. the resulting solution had a density of1.015 gml.
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