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Get ready a buffer solution from 10.0mL of 0.100 M MOPS 3-morpholinopropane-1-sulfonic acid and 10.0mL of 0.082 M NaOH. Next, you add 1.00mL of 8.97 Ã10-6 M lidocaine to this mixture
what is the freezing point in celsius of a solution prepared by dissolving 6.20 g of mgcl2 in 110 g of water? the value
circle the correct choices to indicate how many electrons each element must gain or lose to form an octet
cyclohexane has a freezing point of 6.50 c and a kf of 20.0 cm. what is the freezing point of a solution made by
95% wt solution of ethanol in water has density of 0.804gm/mL. Find mass of 1.00L of this solution and the number of grams of ethanol per litre ?
A mixture of 1.374 g of H2 and 70.31 g of Br2 is heated in a 2.00-L vessel at 700 K. These substances react as follows: H2 (g) + Br2 (g) ⇔ 2HBr (g) Compute the equilibrium concentrations of H2,Br2, and HBr.
At 40 degrees celsius the vapor pressure of methyl alcohol is 254 mmHg and at the same temperature the vapor pressure of ethyl alcohol is 135 mmHg.
Explain the pH of a buffer system that contains 0.210 M hydrocyanic acid (HCN) as well as 0.160 M sodium cyanide (NaCN)? The pKa of hydrocyanic acid is 9.31.
write the balanced equation for the ionization of the weak base pyridine c5h5n in water h2o. phases such as aq or l are
An aqueous solution that contains 329 ppm of KNO3 is being used to feed plants in a graden. What volume (in mL) of this solution is need to prepare 9 L of a solution that is 23 ppm in KNO3?
The rate constant for the reaction at 45oC is 0.130L*mol-1*s-1. Explain how long does it take an initial concentration of 0.060 mol/L to reduce to one-quarter the initial concentration
The gas remaining in the bottle slowly warms up to 285K. what is the final pressure in the bottle for a diatomic gas for which C(v,m) = 5R/2?
What is the relationship between the wavelength and the frequency
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