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Calculate the molarity (M) of a solution prepared by dissolving 1.00g of ethanol (C2H6O) in enough water to give a final volume of 101 mL.
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz (MHz), where 1MHz=1^6 Hz = 1s^-1. Calculate the broadcast wavelenght of the radio station 97.90 FM Green light has a frequency of about 6.00*10^14 s^-1 what is the energy of green light? Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (nm ), where 1nm=10^-9 m. What is the energy of the X-rays?
Which of the following elements are diatomic gases at 25 degrees celsuis and one atm: H, He, C, N, O, F, Ne, P, S, Cl, Ar, Se, Br, Kr, I, Xe, and Rn?
A quantity of N2 occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
Identify three radioactive elements or reactions of different types and write the nuclear reaction for each element.
at 900K the following reaction has kp=.345: 2SO2(g)+O2(g)-->2SO3(g) Partial pressures of SO2 is .150 and of O2 is .455. What is the equilibrium partial pressure of SO3?
A graduated cylinder contains 133 of water. A 10.0 piece of iron (density = 7.86 ) and a 16.0 piece of lead are added. What is the new water level in the cylinder?
a reaction that contributes to the depletion of ozone in the stratosphere is the direct reaction O(g)+O3(g)-->2O2(g) at 298K the rate constant is 4.8*10^5M-1s-1 use delta H values from appendix C to estimate
A flask contains 0.120 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
Determine what given process is occurring when the color appears in the flame and an electron emits energy and it makes a transition to a higher energy orbital.
while a person with inherited MCAD deficiency will experience life-threatening symptoms (lack of energy and coma) after about a day of fasting
if 0.200mole of NaOH is added to 1 liter of solution that is 0.100M in aqueous ammonia and 0.200M in ammonium chloride how much does the Ph change.
If the copper is drawn into wire whose diameter is 8.50 mm , how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/cm^3 .
At 900 titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. Write a balanced equation.
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