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Problem- What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.4*1015 Hz?
I want to know how this is done please show all steps in detail
Given the following data H Cl bond enthalpy = +431 kJ/mol, ?Hf HCl(g) = -92.31 kJ/mol
Problem- What mass of ammonium chloride must be added to 250. mL of water to give a solution with pH = 4.85?
All of the following are substrates or intermediates in the synthesis of phosphatidylinositol EXCEPT
calculate G for following reaction: N2(g)+3H2(g)------>2NH3(g), Pn2=2.6 atm Ph2=5.9atm Pnh3=1.2atm
You diluted the 1:2 dilution 1:3 and finally got a reading that fit onto your standard curve. Your absorbance was 0.450. The best fit line equation : y=0.3413x. What is the actual concentration your unknown protein
Question- Metallic magnesium can be made by the electrolysis of molten MgCl2. (a) What mass of Mg is formed by passing a current of 6.10 A through molten MgCl2 for 4.00 days
Consider the molecule cyclohexane, which contains only hydrogen and carbon atoms. When a sample is burned in oxygen, 4.822 g of CO(2) and 1.650g of H(2)O are obtained. What is its simplest formula?
A sample of diatomic gas has a density of 0.002061g/ml at 1.8 atm pressure and 25.0°C. identify the gas
Forty-four grams of carbon dioxide occupies 32.68 L at 65°C and 645torr. Explain what is its volume at STP?
A mixture of .148 moles of C is reacted with .117 moles of O2 in a sealed 10L container at 500K producing CO and CO2. The total pressure is .640 atm. What is the partial pressure of CO?
you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter
An electrical heater operating for 320 s at a voltage of 12 V and a current of 4.3 A in the same calorimeter elevated the temperature by 22.4 K. Calculate the heat capacity of the calorimeter and amount of heat released by the chemical reaction.
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