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What is the frequency of an EM radiation wave if its wavelength is 3.6 x 10-9 meters?
You need to prepare 20ml of a drug dilution of 50mg/ml from a stock solution of 2g/5ml. How many mls of diluent will be added. Can you please right it out for me, I'm not sure how to set this up.
q1. using the ice table calculate the ph of a solution that contains 0.0075 m lactic acid and 0.085 m sodium
what is the differences between partial and full method validation? under what circumstances are they being carried out?
NH3 is a weak base (Kb=1.8x10-5 M) as well as so the salt NH4Cl acts as a weak acid. Explain what is the pH of a solution that is 0.072 M in NH4Cl
If the total pressure inside the container is 350 mm Hg , what is the partial pressure of each individual component?
In Europe, gasoline efficiency is measured in km/L . If your car's gas mileage is 30.0 miles/gal, how many liters of gasoline would you need to buy to complete a 284- km trip in Europe?
How many stereoisomers are formed. What kinds of stereoisomers are formed
What is the molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6, mol wt = 180 g/mole) in 35.5 mL of solution
The ratio of the number of atoms of the isotopes 69Ga and 71Ga in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium
Assuming the solution has a heat capacity of 4.18 J C g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol? Atomic weights: N=14.01, H=1.0079, O=16.00
What is the molar mass of a covalent compound if 0.486 g of it is dissolved in 25.0 mL of water and produces a freezing temperature
what is the number of valence electrons for nh4+ and what is the lewis structure for that molecule. and how many remaining electrons are there and how do you find the formal charge.
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