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A mixture of three gases (Ar, Ne and CO2) has a total pressure of 1.2 atm. If the mixture of gases is composed of 25.0 g of each gas, explain what is the partial pressure of Ne?
A line in the ultraviolet region of the hydrogen spectrum has a wavelength of 102.5 nm. What is the transition responsible for this wavelength
calculate the ph of a solution formed by mixing 250.0 ml of 0.15 m nh4cl with 100.0 ml of 0.20 m nh3. the kb for nh3 is
The vapor pressure for water at 20 degrees C is 17.5 mmHg. What is the vapor pressure of water over a solution prepared from 2.00 x 10^2 g of sucrose (C12H22O11) and 3.50 x 10^2 g of water
Write the net ionic equations for the reactions.
For a reversible reaction with a one-step mechanism, A B , the rate of the forward reaction is ratef = 3.2 x 10-6 s-1 [A] and the rate of the reverse reaction is rater = 4.6 x 10-4 s-1 [B]. What is the value of Kc for this reaction
Assuming a linear response between current and concentration, calculate the concentration of Pb(II) in the sample by (a) neglecting the information provided by the internal standard
Determine the amount of heat required to raise the temperature of a 153 g bar of gold by 50.0C. (specific heat of gold = 0.128 J/g.C)
Suppose a student is measuring the optical rotation of a 1 M sample of (S)-(-)- Limonene. The path length is 13cm. What optical rotation should the student expect to measure?
what collor do these emmisions produce. b) what si the energy in KJ of these emisions for 5.00 g each of the cloride salts of Sr and Ba
If 10 g of chlorine gas is reacted with a solution containing 25 g of sodium bromide, which substance is limiting and calculate the mass of mass of bromine produced
Explain why it is important to use crucible tongs when you transfer the heated crucible
For the titration of 40.0 mL of 0.250 M acetic acid with 0.200 M sodium hydroxide, determine the pH when
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