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The daily dose of ampicillin for the treatment of an ear infection is 115mg/kg of body weight. What is the daily dose for a33-lb child?
A substance has a vapor pressure of 77.86mm Hg at 318.3 K as well as a vapor pressure of 161.3 mmHg at 340. 7 K. Compute its heat of vaporization in kJ/mol.
Suppose that you first titrated 25.0 mL of 0.500 M HCL with 0.500M NaOH and then 25.0 mL of 0.500 M of a weark acid HA with 0.500M NaOH. How would the titration curves compare at 10 or 15 ml of NaOH beyond the equivalence points? Explain.
Draw the best Lewis structure for azoxymethane, whose sigma-bond network is given to you. Azoxymethane is a neutral molecule.
the half-life for the reaction at 550c is 81.3 seconds. how long does it take for 89 of phosphine sample to
the henrys law constant kh for o2 in water at 20 degrees c is 1.28 x 10-3 mol l-1atm-1. how many grams of o2 will
Please review the occurrence and cycling of calcium in nature, along with its use. Analyze and evaluate the article as to it's contemporary relevance regarding the elements availability, health implications and environmental impact.
imagine that you have a 5.00 l gas tank and a 2.50 l gas tank. you need to fill one tank with oxygen and the other with
The solubility product constant for Ce(IO3)3 is 3.2x10^-10. What is the Ce3+ concentration in a solution prepared by mixing 50.00mL of 0.0250M Ce3+ with 50.00mL of 0.250M IO3-
Calculate the pH of a solution that results from mixing 19.5 mL of 0.145 M HCN(aq) with 22.1 mL of 0.108 M NaCN. The Ka value for HCN is 4.9 x 10-10.
which two packaging plastics should show ir absorptions due toa benzene ring and which one is the addition polymerand
It is again evacuated and then filled with a gas of unknown molar mass. When reweighed, the flask is found to have gained 8.108 g.
What is the HCl concentration of 33.7 mL of 0.350 M NaOH is required to titrate a 30.0 mL sample of the acid?
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